JP2010154487A - Communication processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication processor capable of taking averagely-good gain even when a sub-antenna is directed in any direction. <P>SOLUTION: This communication processor includes: a body 11 with an opening A formed on one end-side end face; an antenna base 13 with a main antenna 12 resonating with a first frequency formed thereon; a housing part 14 formed on the other end side of the body 11 by being cut out for housing the antenna base 13 therein; a holding part 15 having a rotating mechanism capable of setting the main antenna 12 at a predetermined angle with respect to a flat surface of the housing part 14 by attaching the antenna base 13 to the housing part 14; a board 17 incorporated in the body 11 and having a sub-antenna 16 resonating with a second frequency arranged on a surface thereof; and a passive element 18 located in the back direction of the board 17 and arranged in a location facing the location where the sub-antenna 16 is arranged. The sub-antenna 16 is arranged on the other end side of the body 11 on the surface of the board 17. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a communication processing apparatus that is used by being inserted into an external apparatus and has a communication function.

  PC cards, which are a type of communication processing device, are defined in various card sizes and pin numbers, and are used by being inserted into a card slot of a PC (personal computer), which is an external device. For example, in the Express Card (Express Card) / 34, which is an expansion card standard for notebook PCs formulated by PCMCIA (Personal Computer Memory Card Association), the number of pins of the connector is 26 and the connector is formed. The width is 34 mm, and the side width is 75 mm.

  Also, some PC card radio antennas used for communication are arranged outside the main body, but when used, the card slot of the PC is used so as not to be affected by noise emitted from the PC. Should be as far away as possible. In particular, when the target external device is a notebook PC, the wireless antenna of the PC card needs to be arranged in a compact manner so as not to interfere with carrying. Therefore, it is desirable that the wireless antenna of the PC card is configured so that it can be separated from the main body of the PC when in use, and is preferably configured so that the amount of protrusion can be minimized by folding when stored. (For example, refer to Patent Document 1).

JP 2006-5867 A

  By the way, in CDMA (code division multiple access) communication in Japan standardized by 3GPP2 (Third Generation Partnership Project 2), it is specified to cover frequency bands of 824 MHz to 925 MHz and 1.92 GHz to 2.130 GHz. ing. Here, in the PC card, in order to improve communication quality while ensuring this rule, reception by diversity is realized by configuring the antenna configuration with two main antennas and sub-antennas. In addition, it is desired that a positioning function by GPS communication is mounted on a PC card, and the function is realized by a sub-antenna as described below.

  Here, if the main antenna of the PC card is reduced in size and thickness so as to be convenient when stored, it becomes difficult to adjust the frequency. In CDMA communication, it is necessary to obtain antenna characteristics at 800 MHz, 900 MHz, 1.9 GHz, and 2.1 GHz. However, when the size is reduced (thinned), variations in configuration occur, and in particular, antenna elements. Since the length is shortened, there is a problem that the influence due to the variation in length becomes large.

  For example, in order to cause the main antenna to resonate at 800 MHz in CDMA communication, the entire length of the main antenna (strictly speaking, the antenna element is formed in a meander shape, and when it is stretched in a straight line, Since the length) needs to be about λ / 4 (a quarter of the wavelength), the pitch interval of the meandering period needs to be narrowed to increase the turnaround and increase the length of the element. However, if the lead width of the sheet metal is narrowed to ensure the entire length, the strength of the antenna element is reduced. On the other hand, if the antenna case (antenna mount) on which the antenna element is formed is configured to prevent a decrease in strength of the antenna element, the antenna case becomes a complicated structure and becomes large, and eventually the main antenna. It becomes difficult to reduce the size.

  Therefore, since it is difficult to give the main antenna a function of GPS communication, the sub antenna often has the function. The sub-antenna is disposed on the internal substrate of the PC card, and is configured to obtain an average gain in the zenith direction (the earth is the nadir direction). Therefore, if a PC card is inserted into a card slot provided in the PC main body, the sub-antenna naturally faces the zenith direction, so that an average gain can be obtained.

  However, in the case of a PC that does not have a card slot for inserting a PC card, an adapter (for example, a USB adapter) is attached to a communication interface (for example, a USB interface) provided in the PC, and the adapter A configuration is adopted in which the PC main body and the PC card are connected by mounting the PC card. In such a configuration, it is not known how the PC card is arranged, and in some cases, the sub-antenna may not be directed to the zenith direction, and it is impossible to obtain a gain on average. There is a problem. Therefore, the sub-antenna generally employs a linearly polarized monopole antenna or a helical antenna in order to adapt to all use conditions.

  When the main antenna is stored in the PC card body, the tip of the main antenna and the sub-antenna are placed close to each other. Therefore, when communication is performed with the main antenna stored in the PC card body, resonance occurs. There is a possibility that the frequency interferes and the communication quality of both is deteriorated.

  In the PC card, when the main antenna is designed to transmit and receive data and the sub antenna is designed to receive data and data related to GPS communication, the main antenna can be used for diversity reception. There is a possibility that the power (transmission power) required for data transmission due to will interfere with the sub-antenna. In order to remove this interference, a method of removing the sub-antenna receiving circuit by providing a filter, and a method of taking a distance from the main antenna and dealing with the attenuation by space can be considered. The former has the demerits of an increase in size and cost due to the provision of a filter, and the latter has the demerit of an increase in size to take a distance from the main antenna.

  The present invention has been made in view of the above-described problems, and one of its purposes is good on average regardless of the direction in which the sub-antenna is directed without increasing the size and increasing the cost. An object of the present invention is to provide a communication processing apparatus that can obtain a large gain.

  In order to solve the above problems, a communication processing apparatus according to the present invention has a main body in which an opening for exposing an interface conforming to a predetermined standard is formed on an end surface on one end side, and a first frequency. An antenna base on which a resonating first antenna is formed; a cutout formed on the other end side of the main body; a storage part for storing the antenna base; and the antenna base attached to the storage part; A holding unit having a rotation mechanism capable of setting the first antenna to a predetermined angle with respect to the plane of the storage unit, and a second antenna that is built in the main body and resonates at a second frequency is a surface. And a parasitic element disposed at a location opposite to the location where the second antenna is disposed in the rear surface direction of the substrate, the second antenna comprising: The substrate A surface, characterized in that it is disposed at the other end of the body.

  In the communication processing apparatus, the parasitic element is preferably disposed so as to be exposed to the outside of the main body.

  Further, in the communication processing apparatus, a switching unit that switches contact between the ground pattern of the substrate and the parasitic element, and the main body is inserted into a slot that conforms to the predetermined standard provided in an external device. A detection unit for detecting that the interface exposed from the opening is connected to an interface provided in a slot of the external device, and the main body is inserted into the slot by the detection unit; and It is preferable to include a control unit that controls the switching unit so that the ground pattern of the substrate and the parasitic element are brought into contact with each other when it is detected that the interface is connected.

  In the communication processing apparatus, the parasitic element is preferably formed in a plate shape, and the surface area thereof is preferably equal to or greater than the surface area of the second antenna.

  In the communication processing apparatus, the second antenna disposed on the surface of the substrate may be a GPS (global positioning) in addition to the second frequency used for communication by a CDMA (code division multiple access) method. It is preferable to resonate with a third frequency used for positioning communication by (system).

  In the communication processing apparatus, a conductor provided in an ungrounded state in the vicinity of the second antenna is electrically connected to the conductor and the ground pattern of the substrate so that the conductor is grounded. A connection detection unit, a storage detection unit that detects that the antenna base is stored in the storage unit, and the conductor when the storage detection unit detects that the antenna base is stored in the storage unit; It is preferable to include a connection control unit that controls the connection unit so as to be electrically connected to the ground pattern of the substrate.

  In the communication processing apparatus, the second antenna is an antenna that resonates at a plurality of frequencies, and the conductor is in the vicinity of the second antenna independently by the number of frequencies at which the second antenna resonates. The connection part is configured to electrically connect each of the plurality of conductors and the ground pattern of the substrate, thereby bringing each of the plurality of conductors into a ground state, and thereby connecting the connection. The control unit detects a part of the plurality of conductors based on a frequency at which the second antenna is currently resonating when the storage detection unit detects that the antenna base is stored in the storage unit. Alternatively, it is preferable to control the connecting portion so as to electrically connect the whole and the ground pattern of the substrate.

  In the communication processing device, the antenna is formed in a position that is sandwiched between the first antenna and the second antenna when the antenna base is stored in the storage unit. It is preferable to include a conductive portion.

  Further, the communication processing apparatus includes a connection member formed such that one end side is electrically connected to the ground pattern of the substrate and the other end side is exposed on the surface of the storage unit, and the conductive unit includes the antenna. It is preferable that a part or all of the surface of the antenna base is exposed to be electrically connected to the other end side of the connection member when the base is stored in the storage portion.

  According to the present invention, an average good gain can be obtained regardless of the direction in which the sub-antenna is directed.

It is a figure which shows a mode that a communication processing apparatus is connected to PC and is connected to a network. It is a figure which shows the structure of a communication processing apparatus typically. It is the disassembled perspective view which simplified the communication processing apparatus. It is a figure when the antenna stand of a communication processing apparatus is pulled out from a storage part, and it adjusted to the predetermined angle. It is a figure which shows the radiation characteristic concerning GPS communication of a subantenna in a grounding state of a parasitic element, and the radiation characteristic concerning GPS communications of a subantenna when a parasitic element is in a grounding state. It is a functional block diagram which shows the structure of a communication processing apparatus. It is a figure which shows typically the structure of the other Example of a communication processing apparatus. It is a figure which shows typically an internal structure when the communication processing apparatus in the state in which the antenna stand is not accommodated in the accommodating part is seen transparently from the antenna stand side. It is a figure which shows typically an internal structure when the communication processing apparatus in the state in which the antenna stand was accommodated in the accommodating part was seen transparently from the antenna stand side. It is a figure which shows typically the structure of the other Example of a communication processing apparatus. It is a figure which shows typically an internal structure when the communication processing apparatus in the state in which the antenna stand is not accommodated in the accommodating part is seen transparently from the antenna stand side. It is a figure which shows typically an internal structure when the communication processing apparatus in the state in which the antenna stand was accommodated in the accommodating part was seen transparently from the antenna stand side. It is a figure which shows typically a mode that an electroconductive part is connected to the grounding pattern of a board | substrate via a connection member, when an antenna stand is accommodated in an accommodating part.

  Hereinafter, embodiments of the present invention will be described in detail. The communication processing apparatus 1 according to the present embodiment is used for a PC card having an antenna for wireless communication. For example, as shown in FIG. 1, the communication processing apparatus 1 is inserted into a card slot 102 of a PC (Personal Computer) 101 or the PC 101 By connecting to the interface 103 compliant with a predetermined communication standard (for example, USB) via the adapter 104, the PC 101 is used for connection to the network 202 (for example, the Internet) via the base station 201.

  As illustrated in FIG. 2, the communication processing device 1 includes a main body 11, an antenna base 13, a storage unit 14, a holding unit 15, a substrate 17, and a parasitic element 18. The main body 11 has an opening A for exposing an interface B conforming to a predetermined standard on one end face. In addition, when the communication processing apparatus 1 is inserted into the card slot 102 of the PC 101 or connected to the adapter 104, the interface B formed in the opening A is an interface inside the card slot 102 or an interface inside the adapter 104. It is electrically connected to the data communication.

  The antenna base 13 is formed with a first antenna 12 (hereinafter referred to as a main antenna 12) that resonates at a first frequency. The first frequency is, for example, a frequency (for example, 800 MHz) used for communication by a CDMA (code division multiple access) method. The storage portion 14 is formed by cutting out on the other end side of the main body 11 and stores the antenna base 13. The holding unit 15 has a rotation mechanism that attaches the antenna base 13 to the storage unit 14 and can set the main antenna 12 at a predetermined angle with respect to the plane of the storage unit 14.

  The substrate 17 is built in the main body 11, and a second antenna 16 (hereinafter referred to as a sub-antenna 16) that resonates at the second frequency is disposed on the surface. The second antenna 16 is disposed on the surface of the substrate 17 on the other end side of the main body 11 (the side where the opening A is not formed). The parasitic element 18 is arranged at a position facing the place where the sub antenna 16 is arranged in the direction of the back surface of the substrate 17. The parasitic element 18 may be disposed in the direction of the back surface of the substrate 17 and may be disposed inside the main body 11 or may be disposed outside the main body 11.

  Further, the sub-antenna 16 disposed on the surface of the substrate 17 has a GPS (global positioning system) in addition to a second frequency (for example, 800 MHz and 2 GHz) used for CDMA (code division multiple access) communication. ) May resonate with a third frequency (for example, 1.5 GHz) used for positioning communication.

  FIG. 3 is a simplified exploded perspective view of the communication processing apparatus 1. The board | substrate 17 is pinched | interposed by the sheet metal 31 and 32 from the up-down direction. When the communication processing apparatus 1 is inserted into the card slot 102 of the PC 101, the sheet metals 31 and 32 are brought into contact with the sheet metal formed inside the card slot 102. By abutting in this way, the static electricity charged in the communication processing device 1 can be caused to flow to the PC 101 side, so that a countermeasure for static electricity is taken.

  When the components are combined to complete the communication processing apparatus 1, the antenna base 13 in which the main antenna 12 is formed on the upper surface of the sub-antenna 16 in a state where the antenna base 13 is stored in the storage part 14. The parasitic element 18 is disposed on the lower surface of the sub-antenna 16 via the substrate 17.

  FIG. 4 shows an external view when the antenna base 13 of the communication processing apparatus 1 is pulled out from the storage unit 14 and adjusted to a predetermined angle. The antenna base 13 can be adjusted to a predetermined angle with respect to the plane of the storage unit 14, and can be set to a position with good reception sensitivity.

  The parasitic element 18 is preferably disposed so as to be exposed to the outside of the main body 11. With this configuration, when the communication processing device 1 is inserted into the card slot 102 of the PC 101, the parasitic element 18 abuts against the sheet metal of the card slot 102. Are electrically connected to the GND of the PC 101 to be grounded. Further, when the communication processing apparatus 1 is connected to the interface 103 of the PC 101 via the adapter 104, the parasitic element 18 is in a non-grounded state.

  Here, FIG. 5 shows radiation characteristics related to GPS communication of the sub-antenna 16 when the parasitic element 18 is grounded and radiation characteristics related to GPS communication of the sub-antenna 16 when the parasitic element 18 is grounded. In FIG. 5, 0 ° -180 ° indicates the horizontal direction with respect to the ground, 270 ° indicates the zenith direction, and 90 ° indicates the nadir direction.

  As can be seen from FIG. 5, when the parasitic element 18 is grounded, the radiation characteristic of the sub-antenna 16 can take an average gain in the zenith direction, and when the parasitic element 18 is ungrounded, the sub-antenna 16 It is possible to obtain an average gain in the radiating characteristics in all directions.

  Accordingly, in the communication processing apparatus 1, since the sub antenna 16 is oriented in the zenith direction when inserted in the card slot 102 of the PC 101, it is easy to obtain a gain in the zenith direction on average, and the interface 103 of the PC 101 In the state where the sub antenna 16 is connected to the adapter 104 through the adapter 104, it is not known in which direction the sub antenna 16 is directed. However, since the sub antenna 16 is configured to easily obtain a gain in all directions on average, Even if it is directed in the direction, a good gain can be obtained on average, and GPS communication can be performed satisfactorily regardless of the direction of the radiation surface of the sub-antenna 16.

  Further, as described above, the communication processing device 1 may not have a configuration in which the parasitic element 18 is exposed to the outside of the main body 11. For example, as illustrated in FIG. The parasitic element 18 may be in a grounded state or a non-grounded state by a configuration including the detection unit 20 and the control unit 21.

  The switching unit 19 switches contact between the ground pattern of the substrate 17 and the parasitic element 18. The detection unit 20 is inserted into a card slot 102 that conforms to a predetermined standard with the main body 11 provided in an external device (PC 101), and the interface B exposed from the opening A is in the card slot 102 of the PC 101. It detects that it is connected to the interface provided for.

  Here, the detection operation of the detection unit 20 will be described. The detection unit 20 detects that the communication processing device 1 has been inserted into the card slot 102 of the PC 101 by detecting that the metal plates 31 and 32 constituting the main body 11 have come into contact with the sheet metal of the card slot 102 of the PC 101. To do. Further, in the communication processing apparatus 1, for example, any terminal constituting the interface B is set as a connection detection terminal. The detection unit 20 detects that the interface of the card slot 102 of the PC 101 is connected by the connection detection terminal.

  When the detection unit 20 detects that the main body 11 is inserted into the card slot 102 and connected to the interface, the control unit 21 switches the ground pattern X of the substrate 17 and the parasitic element 18 to contact each other. The unit 19 is controlled.

  Accordingly, in the communication processing apparatus 1, since the sub antenna 16 is oriented in the zenith direction when inserted in the card slot 102 of the PC 101, it is easy to obtain a gain in the zenith direction on average, and the interface 103 of the PC 101 In the state where the sub antenna 16 is connected to the adapter 104 through the adapter 104, it is not known in which direction the sub antenna 16 is directed. However, since the sub antenna 16 is configured to easily obtain a gain in all directions on average, Even if it is directed in the direction, a good gain can be obtained on average, and GPS communication can be performed satisfactorily regardless of the direction of the radiation surface of the sub-antenna 16.

  The parasitic element 18 is formed in a plate shape, and the surface area thereof is preferably equal to or greater than the surface area of the second antenna 16 (sub antenna 16).

  With this configuration, the communication processing device 1 can further direct the radiation characteristics of the sub-antenna 16 in the zenith direction when the parasitic element 18 is grounded, and obtains a good gain. Therefore, GPS communication can be performed satisfactorily.

<Other Example 1>
The communication processing device 1 deteriorates the radiation gain of the sub antenna 16 when the antenna base 13 incorporating the main antenna 12 is stored in the storage unit 14, and causes interference between the main antenna 12 and the sub antenna 16. This is a function / configuration that ensures isolation between both antennas. Since the communication processing device 1 has such a function and configuration, even if the antenna base 13 is stored in the storage unit 14 and the main antenna 12 and the sub antenna 16 are close to each other, the communication processing device 1 is transmitted from the main antenna 12. Since the transmission wave is not received by the sub-antenna 16, it is possible to prevent deterioration of communication characteristics.

  Here, a specific example of the function / configuration will be described with reference to FIG. FIG. 7 schematically shows components around the sub-antenna 16. As illustrated in FIG. 7, the communication processing device 1 includes a conductor 41, a connection unit 42, a storage detection unit 43, and a connection control unit 44. The conductor 41 is provided near the sub antenna 16 in a non-grounded state. The connecting portion 42 electrically connects the conductor 41 and the ground pattern of the substrate 17 to bring the conductor 41 into a ground state. The storage detection unit 43 detects that the antenna base 13 is stored in the storage unit 14.

  A structure for detecting that the antenna base 13 is stored in the storage unit 14 by the storage detection unit 43 will be described. As shown in FIG. 8, the antenna base 13 has a protrusion 51 having a predetermined length on the surface facing the storage portion 14. In addition, the storage portion 14 is formed with a through hole 52 through which the protruding portion 51 passes when the antenna base 13 is stored. When the antenna base 13 is stored in the storage unit 14, the protrusion 51 passes through the through hole 52 and contacts the storage detection unit 43 formed on the substrate 17. The storage detection unit 43 has, for example, a push button type configuration. When the antenna base 13 is stored in the storage part 14 and the push button is physically pressed by the protrusion 51, the antenna base 13 is It is detected that it is stored in the storage unit 14 (see FIGS. 8 and 9).

  When the storage detection unit 43 detects that the antenna base 13 is stored in the storage unit 14, the connection control unit 44 sets the connection unit 42 so as to electrically connect the conductor 41 and the ground pattern of the substrate 17. Control.

  With this configuration, the communication processing device 1 always maintains good radiation characteristics of the sub-antenna 16 regardless of the connection state between the main body 11 and the external device (PC 101), and the main antenna 12 is built-in. When the antenna base 13 is stored in the storage portion 14, the conductor 41 is grounded, so that the radiation gain of the sub antenna 16 is deteriorated and interference between the main antenna 12 and the sub antenna 16 is prevented. In addition, isolation between both antennas can be ensured. Therefore, in the communication processing apparatus 1, even if the antenna base 13 is accommodated in the accommodating portion 14 and the main antenna 12 and the sub antenna 16 are close to each other, the transmission wave transmitted from the main antenna 12 is not received by the sub antenna 16. Therefore, it is possible to prevent deterioration of communication characteristics.

<Other Example 2>
In <Other Example 1> described above, the configuration in which only one conductor 41 is provided has been described, but the configuration is not limited thereto. For example, when the sub antenna 16 is configured to resonate at a plurality of frequencies, the size of the conductor 41 may be changed in accordance with the currently used frequency.

  Specifically, the conductor 41 is provided in the non-grounded state in the vicinity of the sub antenna 16 independently by the number of frequencies at which the sub antenna 16 resonates. In addition, the connection portion 42 electrically connects each of the plurality of conductors 41 and the ground pattern of the substrate 17 to bring each of the plurality of conductors 41 into a grounded state. In addition, when the connection detection unit 43 detects that the antenna base 13 is stored in the storage unit 14, the connection control unit 44 sets the plurality of conductors 41 based on the frequency at which the sub-antenna 16 is currently resonating. The connecting portion 42 is controlled so as to electrically connect a part or all of the ground pattern to the ground pattern of the substrate 17.

  Here, a configuration in which the sub-antenna 16 resonates at a frequency of 800 MHz and 2 GHz and two conductors 41 are provided will be described. As shown in FIG. 10, the communication processing apparatus 1 electrically connects the first conductor 41a and the second conductor 41b, which are not grounded in the steady state, and the ground pattern of the first conductor 41a and the substrate 17 to each other. The first connecting portion 42a connected to the second connecting portion 42b, the second connecting portion 42b electrically connecting the second conductor 41b and the ground pattern of the substrate 17, the storage detecting portion 43, and the connection control portion 44. Is done. It is assumed that the connection control unit 44 can grasp which frequency band the sub-antenna 16 is currently using for communication.

  For example, when the sub-antenna 16 performs communication in the 800 MHz frequency band, the connection control unit 44 detects that the antenna base 13 is stored in the storage unit 14 by the storage detection unit 43. The first connecting portion 42a is controlled so that the conductor 41a is electrically connected to the ground pattern of the substrate 17.

  Therefore, the communication processing apparatus 1 always maintains good radiation characteristics of the sub-antenna 16 regardless of the connection state between the main body 11 and the external device (PC 101), and the antenna base 13 in which the main antenna 12 is incorporated is provided. Since the first conductor 41a is in a grounded state when housed in the housing portion 14, the radiation gain of the sub antenna 16 is deteriorated based on the frequency at which the sub antenna 16 is currently resonating. Interference between the two antennas can be prevented and the isolation between the two antennas can be ensured. Therefore, in the communication processing device 1, even if the antenna base 13 is stored in the storage unit 14 and the main antenna 12 and the sub antenna 16 are close to each other, the transmission wave transmitted from the main antenna 12 is not received by the sub antenna 16. Therefore, it is possible to prevent deterioration of communication characteristics.

  When the sub-antenna 16 performs communication in the frequency band of 2 GHz, the connection control unit 44 detects that the antenna base 13 is stored in the storage unit 14 by the storage detection unit 43. The first connecting portion 42a is controlled so that the conductor 41a is electrically connected to the ground pattern of the substrate 17, and the second conductor 41b is electrically connected to the ground pattern of the substrate 17. 2 connection part 42b is controlled.

  Therefore, the communication processing apparatus 1 always maintains good radiation characteristics of the sub-antenna 16 regardless of the connection state between the main body 11 and the external device (PC 101), and the antenna base 13 in which the main antenna 12 is incorporated is provided. Since the first conductor 41a and the second conductor 41b are grounded when stored in the storage unit 14, the radiation gain of the sub-antenna 16 is deteriorated based on the current resonance frequency, and the main antenna 12 And the sub-antenna 16 can be prevented and isolation between the two antennas can be ensured. Therefore, in the communication processing device 1, even if the antenna base 13 is stored in the storage unit 14 and the main antenna 12 and the sub antenna 16 are close to each other, the transmission wave transmitted from the main antenna 12 is not received by the sub antenna 16. Therefore, it is possible to prevent deterioration of communication characteristics.

<Other Example 3>
As shown in FIGS. 11 and 12, the communication processing apparatus 1 is sandwiched between the main antenna 12 and the sub-antenna 16 inside the antenna base 13 when the antenna base 13 is stored in the storage unit 14. A conductive portion 61 formed at a position to be provided. FIG. 11 is a diagram schematically showing an internal structure when the communication processing device 1 in a state before the antenna base 13 is stored in the storage unit 14 is seen transparently from the antenna base 13 side. These are figures which show typically an internal structure when the communication processing apparatus 1 in the state in which the antenna stand 13 was accommodated in the accommodating part 14 was seen transparently from the antenna stand 13 side. Further, as shown in FIG. 12, the size of the conductive portion 61 is preferably large enough to cover the sub antenna 16 when the antenna base 13 is stored in the storage portion 14.

  With this configuration, the communication processing device 1 always maintains good radiation characteristics of the sub-antenna 16 regardless of the connection state between the main body 11 and the external device (PC 101), and the main antenna 12 is built-in. When the antenna stand 13 is accommodated in the accommodating portion 14, the conductive portion 61 can prevent interference between the main antenna 12 and the sub antenna 16, and can ensure the isolation between the two antennas.

<Other Example 4>
Further, as shown in FIG. 13, the communication processing apparatus 1 includes a connection member 62 that is formed such that one end side is electrically connected to the ground pattern of the substrate 17 and the other end side is exposed on the surface of the storage unit 14. . In the case of such a configuration, the conductive portion 61 is disposed on the surface of the antenna base 13 so as to be electrically connected to the other end side of the connection member 62 when the antenna base 13 is stored in the storage portion 14. Part or all is exposed.

  Therefore, the communication processing apparatus 1 always maintains good radiation characteristics of the sub-antenna 16 regardless of the connection state between the main body 11 and the external device (PC 101), and the antenna base 13 in which the main antenna 12 is incorporated is provided. Since the conductive portion 61 is in a grounded state when stored in the storage portion 14, the radiation gains of both the main antenna 12 and the sub-antenna 16 are deteriorated, and the isolation between the two antennas can be ensured. Therefore, in the communication processing apparatus 1, even if the antenna base 13 is accommodated in the accommodating portion 14 and the main antenna 12 and the sub antenna 16 are close to each other, the transmission wave transmitted from the main antenna 12 is not received by the sub antenna 16. Therefore, it is possible to prevent deterioration of communication characteristics.

DESCRIPTION OF SYMBOLS 1 Communication processing apparatus 11 Main body 12 Main antenna (1st antenna)
13 Antenna base 14 Storage unit 15 Holding unit 16 Sub antenna (second antenna)
17 Substrate 18 Parasitic element 19 Switching unit 20 Detection unit 21 Control unit 41 Conductor 42 Connection unit 43 Storage detection unit 44 Connection control unit 61 Conductive unit 62 Connection member

Claims (9)

A main body in which an opening for exposing an interface conforming to a predetermined standard is formed on an end surface on one end side;
An antenna base on which a first antenna that resonates at a first frequency is formed;
A cutout portion formed on the other end side of the main body, and a storage portion for storing the antenna base;
A holding unit having a rotation mechanism capable of setting the first antenna to a predetermined angle with respect to a plane of the storage unit by attaching the antenna base to the storage unit;
A substrate that is built into the body and has a second antenna that resonates at a second frequency disposed on the surface;
A parasitic element arranged in a direction opposite to the place where the second antenna is arranged in the rear surface direction of the substrate,
The communication processing apparatus, wherein the second antenna is disposed on a surface of the substrate on the other end side of the main body.   The communication processing apparatus according to claim 1, wherein the parasitic element is disposed so as to be exposed to the outside of the main body. A switching unit for switching contact between the ground pattern of the substrate and the parasitic element;
The main body is inserted into a slot conforming to the predetermined standard provided in the external device, and the interface exposed from the opening is connected to the interface provided in the slot of the external device. A detection unit for detecting
A control unit that controls the switching unit to bring the ground pattern of the substrate into contact with the parasitic element when the detection unit detects that the main body is inserted into the slot and connected to the interface; The communication processing apparatus according to claim 1, further comprising:   The communication processing apparatus according to claim 1, wherein the parasitic element is formed in a plate shape and has a surface area equal to or greater than a surface area of the second antenna.   The second antenna arranged on the surface of the substrate is used for positioning communication by GPS (global positioning system) in addition to the second frequency used for communication by CDMA (code division multiple access). The communication processing apparatus according to claim 1, wherein the communication processing apparatus is configured to resonate with a third frequency. A conductor provided in an ungrounded state in the vicinity of the second antenna;
Electrically connecting the conductor and the ground pattern of the substrate, and a connection portion for bringing the conductor into a ground state,
A storage detection unit for detecting that the antenna base is stored in the storage unit;
A connection control unit that controls the connection unit to electrically connect the conductor and the ground pattern of the substrate when the storage detection unit detects that the antenna base is stored in the storage unit; The communication processing apparatus according to claim 1, further comprising: The second antenna is an antenna that resonates at a plurality of frequencies,
The conductor is provided in an ungrounded state in the vicinity of the second antenna independently by the number of frequencies at which the second antenna resonates,
The connecting portion electrically connects each of the plurality of conductors and the ground pattern of the substrate, thereby bringing each of the plurality of conductors into a ground state,
The connection control unit detects the plurality of conductors based on a frequency at which the second antenna is currently resonating when the storage detection unit detects that the antenna base is stored in the storage unit. The communication processing apparatus according to claim 6, wherein the connection unit is controlled so as to electrically connect a part or all of the ground pattern to the ground pattern of the substrate.   A conductive portion formed inside the antenna base at a position sandwiched between the first antenna and the second antenna when the antenna base is stored in the storage portion; The communication processing apparatus according to claim 1, wherein: One end side is electrically connected to the ground pattern of the substrate, and the other end side is provided with a connecting member formed exposed on the surface of the storage unit,
The conductive portion is formed by exposing a part or all of the surface of the antenna base so as to be electrically connected to the other end side of the connection member when the antenna base is stored in the storage portion. 9. The communication processing apparatus according to claim 8, wherein the communication processing apparatus is configured.

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