JP2000188506A - Antenna system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antenna system of a small size, ease of mount with a wide bandwidth, a high radiation efficiency and little of useless space in the inside of its enclosure. SOLUTION: The antenna system has a reactance element 30 made of a meandering conductor or the like, the lengthwise length of which is longer than the length in the right-angled direction, a linear conductor pattern 40 whose one end is connected electrically to the meandering conductor or the like, and a feeding terminal connected to the other end of the linear conductor pattern 40. The reactance element 30 is placed at the part of a printed circuit board 10 where no ground pattern 20 is formed on both the surfaces, and the linear conductor pattern 40 is placed so that its lengthwise direction is perpendicular to the lengthwise direction of the reactance element 30 and the linear conductor pattern 40 and the reactance element 30 form an inverted-L form.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna device used for mobile communication and a local area network.

[0002]

2. Description of the Related Art FIG. 17 is a diagram showing conventional antenna devices AS11 to AS13 mainly used for portable telephones.

A rod antenna AS1 shown in FIG.
1, a helical antenna AS12 shown in FIG. 17 (2) is provided outside the housing, and these are common as conventional examples. In addition, in order to reduce the size, a chip antenna AS13 with a built-in housing shown in FIG.

[0004] The rod antenna AS11 and the helical antenna AS12 are known technologies, and are known as chip antennas AS.
13 are disclosed in JP-A-9-36639 and JP-A-9-36639.
No. 55618, for example. In general, a built-in antenna such as a chip antenna AS13 has a poor gain as compared with an external rod antenna AS11 or a helical antenna AS12, and is widely used mainly for diversity.

[0005]

The external rod antenna AS11 and the helical antenna AS12 have excellent characteristics, but their shapes are large, and the mounting method is very complicated because they cannot be surface-mounted. Further, although the antenna device incorporating the chip antenna AS13 has a small shape, the band is narrowed accordingly and the gain is low.

FIG. 18 shows a conventional chip antenna AS13.
FIG. 9 is a perspective view showing a relationship with the periphery when the device is mounted.

FIG. 19 shows a conventional chip antenna AS13.
3 is a diagram showing an equivalent circuit of FIG.

[0008] Since other mounting parts and GND cannot be arranged around the chip antenna AS13, there is a problem that a wasteful space increases.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an antenna device which is small in size, easy to mount, has a wide bandwidth, has high radiation efficiency, and has little wasted space inside a housing. .

[0010]

According to the present invention, a reactance element having a length in a traveling direction of a meandering conductor or the like longer than a length in a right-angle direction thereof, and one end is electrically connected to the meandering conductor or the like. It has a linear conductor pattern and a power supply terminal connected to the other end of the linear conductor pattern, and a reactance element is installed on a portion of the printed circuit board where no ground pattern exists on both surfaces, and This is an antenna device in which a longitudinal direction of a conductor pattern and a longitudinal direction of a reactance element are arranged perpendicularly to form an inverted L-shape.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view showing the structure of an antenna device AS1 according to a first embodiment of the present invention.

The antenna device AS1 includes a rod-shaped reactance element 30 and a linear conductor pattern 4 for feeding and radiation.
0 and a feeding point 50.

The printed circuit board 10 is made of a material such as glass epoxy, Teflon (registered trademark), polyimide, alumina, glass ceramic or the like. A conductor such as copper, silver, gold, aluminum, silver palladium or palladium is etched with a metal foil. , Printing, vapor deposition, sputtering, etc. The bar-shaped reactance element 30 is provided on a portion other than the GND pattern 20 of the printed circuit board 10.

The linear conductor pattern 40 has one end connected to the rod-shaped reactance element 30 and the other end connected to the feeding point 5.
Connected to 0. Then, the linear conductor pattern 40
And the reactance element 30 are arranged in an inverted L-shape.

FIG. 2 is a perspective view showing the configuration of the antenna device AS1.

The feeding point 50 is constituted by a microstrip line 51 and a transceiver 52, and is connected to the linear conductor pattern 40 at the edge of the GND pattern 20. If the length of the microstrip line 51 is １ ／ wavelength of the frequency of transmission / reception, G
The edge portion of the ND pattern 20 becomes an ideal feeding point of the transceiver 52.

A land pattern 11 for mounting the reactance element 30 is formed on the printed circuit board 10, and the linear conductor pattern 40 and the land pattern 11 are
Each is electrically connected to the power supply terminal t1 and the mounting terminal t2 of the reactance element 30 by soldering. Note that instead of the soldering, electrical connection may be performed by fixing with a conductive paste, pressure bonding, or the like.

The longitudinal direction of the linear conductor pattern 40 and the longitudinal direction of the reactance element 30 are arranged at right angles to each other, and are arranged to form an inverted L-shape. Here, the printed circuit board 10 having the GND pattern 20 is:
It is a model of a mounting board of a mobile communication device, and is not necessarily in the state of the entire land land (the state in which the entire surface of the printed circuit board 10 is at the ground potential) as shown in the figure in an actual use condition.

FIG. 3 is an equivalent circuit diagram of the antenna device AS1.

The inductance L is determined by the reactance element 3
0, which is an inductance component which is an internal reactance, and the capacitor C is connected to the reactance element 30 and G
This is a stray capacitance formed by the ND pattern 20.

FIG. 4 is a perspective perspective view showing the structure of the reactance element 30 in the antenna device AS1.

The reactance element 30 in the antenna device AS1 does not need to be limited to a material having a high dielectric constant or a high magnetic permeability, but includes a base 31 having an insulating property made of a dielectric material or a magnetic material. ,
Meandering conductor 32 formed inside base 31,
33. Both ends of the meandering conductors 32 and 33 are electrically connected to the power supply terminal t1 and the mounting terminal t2.

In each of the above embodiments, the dielectric material used is ceramic, resin, a composite material of ceramic and resin, or a composite material of ceramic and glass, etc., and has insulating properties. is there. Also,
In each of the above embodiments, a magnetic material may be used as the base 31 instead of the dielectric material. The dielectric constant, the magnetic permeability, the mixing ratio of the composite material, and the like are appropriately selected. Further, the conductor in each of the above embodiments is gold, silver,
Copper, palladium and the like.

The substrate 31 is made of a ceramic substrate or a resin substrate formed by a sheet method, a printing method, a molding method, or the like, a substrate made of a composite material of ceramic and resin, a substrate made of a composite material of ceramic and glass, and the like. The meandering conductors 32 and 33 inside the substrate are formed by printing, sputtering, etching, or the like.

In each of the above embodiments, the dielectric material used as the substrate 31 is ceramic (cordrite, forsterite, alumina, glass ceramic, titanium oxide ceramic, or a mixture thereof), resin (polytetrafluorocarbon). Ethylene, polyimide, bismaleimide, triazine, liquid crystal polymer, etc.) or a composite material of ceramic and resin, and the conductor is gold,
Silver, copper, palladium and the like. Note that a magnetic material may be used instead of the dielectric material used as the base 31.

A power supply terminal t1 and a mounting terminal t2
Are formed by printing, terminating, sputtering, etching or the like so as to be connected to the internal conductors 32, 33.

FIG. 5 is an expanded view of the reactance element 30 in the antenna device AS1.

In FIG. 5, printing and printing are performed on sheets 35a to 35f such as ceramic green sheets or resin sheets.
Internal conductors 32 and 33 are formed by a technique such as sputtering, vapor deposition, or etching, and these are stacked, stacked, and pressed in the order of 35a to 35f. In the case of a ceramic, it is fired, and the inner conductor 32,
33, a power supply terminal t1 and a mounting terminal t.
2 is constituted by termination or printing. The power supply terminal t1 and the mounting terminal t2 may be formed on the green sheet before firing by printing or the like.

FIG. 6 is a structural perspective view showing a reactance element 30a used in place of the reactance element 30.

As shown in FIG. 6, the reactance element 30a forms a helical conductor inside the base 31a, and both ends of the helical conductor are electrically connected to the power supply terminal t1 and the mounting terminal t2. It is arranged and configured so as to be performed. The base 31a is a ceramic substrate, a resin substrate, a composite substrate of ceramic and resin, or the like formed by a sheet method, a printing method, a mold forming method, or the like, and the conductors 35, 36 constituting the helical conductor inside the substrate. The through holes 37 are formed by printing, sputtering, etching, or the like. The power supply terminal t1 and the mounting terminal t2 are formed by printing, terminating, sputtering, etching or the like so as to be connected to the conductors 35 and 36 constituting the helical conductor.

FIG. 7 is an expanded view of the reactance element 30a.

In FIG. 7, internal conductors 35, 36, and 37 are formed on a ceramic green sheet or a sheet 38a to 38f such as a resin sheet by a method such as printing, sputtering, vapor deposition, or etching. , 38a-38f, stacked and pressed. Here, a via connection conductor for forming the through hole 37 is formed by embedding a conductor paste by printing or the like in a hole penetrating a sheet formed by a laser, a mechanical punch, a drill, or the like, or a via connection by electroless plating or the like. The upper and lower surfaces of the sheet are electrically connected by a method of covering the inner surface with a conductor or the like.

By overlapping these, a through hole 37 is formed. In the case of ceramic, the base 31a is fired, and the power supply terminal t1 and the mounting terminal t2 are formed by termination or printing so as to be connected to the conductors 35 and 36 constituting the helical conductor on the surface of the base 31a. Alternatively, the power supply terminal t1 and the mounting terminal t2 may be formed on the green sheet before firing by a method such as printing.

That is, the reactance elements 30, 30a
Is provided inside or on the surface of a substrate made of a dielectric material or a magnetic material, and has a first conductor made of a meandering conductor or a helical conductor,
This is an example of a reactance element in which the length of the first conductor in the traveling direction is longer than the length in the perpendicular direction.

The power supply and linear conductor pattern 40 is formed by a linear conductor pattern provided on a printed circuit board, and one end of which is electrically connected to one terminal of the first conductor. It is an example of a conductor pattern.

The power supply point 50 is an example of a power supply terminal provided at one end in the longitudinal direction of the surface of the printed circuit board and connected to the other end of the linear conductor pattern.

The reactance element is provided on a portion of the printed circuit board where no ground pattern exists on both sides, and the longitudinal direction of the linear conductor pattern and the longitudinal direction of the reactance element are vertically arranged. To form an inverted L-shape.

FIG. 8 is a front view showing the configuration of an antenna device AS2 according to a second embodiment of the present invention.

As shown in FIG. 8, the antenna apparatus AS2 is composed of a rod-shaped reactance element 30, a feed and linear conductor pattern 40, a GND connection linear conductor pattern 41, and a feed point 50. .

The printed circuit board 10 is made of a material such as glass epoxy, Teflon, polyimide, alumina, glass ceramic, etc., and is made of copper, silver, gold, aluminum, silver palladium,
This is a substrate in which a conductor such as palladium is formed by a method such as etching, printing, vapor deposition, or sputtering with metal foil. The rod-shaped reactance element 30 is connected to the GN of the printed circuit board 10.
It is provided in a portion other than the D pattern 20.

The GND connection linear conductor pattern 41 is
A GND connection terminal t3, which is drawn from a part of the first conductor and connected to the surface of the reactance element 30, is connected to GND.
The pattern 20 is connected.

The inverted F-type antenna is constituted by the reactance element 30, the feeding and radiation linear conductor pattern 40, and the GND connection linear conductor pattern 41.

The linear conductor pattern 40 is formed by a linear conductor pattern provided on a predetermined printed circuit board, and has one end electrically connected to one terminal of the first conductor. 1 is an example of a first linear conductor pattern.

FIG. 9 is a perspective view showing the configuration of the antenna device AS2.

The feeding point 50 is constituted by a microstrip line 51 and a transceiver 52, and is connected to the linear conductor pattern 40 at the edge of the GND pattern 20. If the length of the microstrip line 51 is １ ／ wavelength of the frequency of transmission / reception, G
The edge portion of the ND pattern 20 becomes an ideal feeding point of the transceiver 52.

Antenna fixing land pattern 1 for mounting reactance element 30 on printed circuit board 10
1 and a linear conductor pattern 41 for ground connection are provided. One end of the linear conductor pattern 41 for ground connection is connected to the GND pattern 20 and is configured in parallel with the linear conductor pattern 40.

The power supply terminal t1 of the reactance element 30,
The mounting terminal t2 and the GND connection terminal t3 are respectively
End of linear conductor pattern 40, land pattern 11 for fixing antenna, linear conductor pattern 41 for ground connection
Are electrically connected to each other by soldering, fixing with a conductive paste, pressure bonding, or the like. In this case, the linear directions of the linear conductor pattern 40 and the ground-connecting linear conductor pattern 41 and the longitudinal direction of the reactance element 30 are arranged at right angles to each other, forming an inverted-F type antenna.

Here, the printed circuit board 10 having the GND pattern 20 simulates a mounting board of a mobile communication device, and is not necessarily in the state of a full land land as shown in the drawing in actual use.

FIG. 10 is a diagram showing an equivalent circuit of the antenna device AS2.

The inductance L is determined by the reactance element 3
0, which is an inductance component which is an internal reactance, and the capacitor C is connected to the reactance element 30 and G
This is a stray capacitance formed between the ND pattern 20 and the ND pattern 20.

As described above, since the effective height of the image can be increased by using the inverted F type, a high radiation efficiency can be obtained if the matching is properly performed.

The linear conductor pattern 41 for GND connection is
It is an example of a GND-connection linear conductor pattern for connecting a part of the first conductor and a ground pattern on the printed board.

FIG. 11 is a perspective view showing the configuration of an antenna device AS3 according to a third embodiment of the present invention.

The antenna device AS3 is the same as the antenna device AS.
The conductor pattern 12 for trimming is provided continuously to the land pattern 11 for fixing the antenna 1 and the reactance element 3
0, the mounting terminal t2 from which the other end of the first conductor is drawn out is connected to the antenna fixing land pattern 11, and the reactance element 30 and the trimming conductor pattern 12 form a series of inductances. Components. This is an antenna device in which the trimming conductor pattern 12 can be trimmed by a trimming method 13 such as laser or sandblasting.

Since the trimming conductor pattern 12 can be trimmed as in the antenna device AS3, the inductance formed by the reactance element 30 can be adjusted, and the frequency of the antenna device can be adjusted. The yield can be improved with respect to process variations and the like.

The trimming conductor pattern 12
May be applied to the antenna device AS2.

The shape of each of the above embodiments is the same as that of the conventional antenna A.
The reason why the shape is smaller than the shapes of S11 and AS12 is that the shape is formed on the printed circuit board 10 inside the housing.
The reason why each of the above embodiments is easy to mount is that the reactance element 30 can be surface-mounted, so that automatic mounting using a mounter or the like is possible.

FIG. 12 is a configuration perspective view showing an antenna device AS4 according to a fourth embodiment of the present invention.

The antenna device AS4 is an antenna device AS4.
1, the reactance element 30 is
The antenna is located in a location other than.

The antenna device AS4 includes a reactance element fixing base 61 provided in a part of the housing 60, the reactance element 30 fixed to the reactance element fixing base 61, and power supply between the reactance element 30 and the printed circuit board 10. And a connection metal terminal 40a for connecting the microstrip line 51 for connection. The connection metal terminal 40a is the same as the feed and linear conductor pattern 40 in the antenna device AS1.

As shown in FIG. 12, the reactance element 3
By arranging the “0” at a position other than on the printed circuit board 10, the antenna characteristics can be further improved according to the design of the housing 60, and the parts can be easily replaced, and the yield can be improved by the ease of repair. Is achieved.

The antenna device AS4 may be applied to the antenna devices AS2 and AS3.

In each of the above embodiments, the conventional antenna A
The reason why the bandwidth is wide and the radiation efficiency is high as compared with S13 is as follows. That is, the stray capacitance C in the equivalent circuit of the conventional antenna device AS13 is GND.
This is generated between the pattern 20 and the inductor L, and most of it is caused by the dielectric constant of the material forming the base of the chip antenna 5. On the other hand, the antenna device A
The stray capacitance C in the equivalent circuit of S1 is given by
Mostly due to the dielectric constant of air. The dielectric constant of air is 1, and the stray capacitance C is smaller than in the conventional example.
As a result, in the above embodiment, the band of the antenna device can be widened.

FIG. 13 is a diagram showing VSWR characteristics in the above embodiment and the conventional example.

FIG. 14 is a conceptual diagram showing the current distribution of the antenna, and is a diagram showing a difference in the current distribution of the structure of the quarter wavelength monopole antenna.

The quarter-wavelength full-size antenna shown in FIG. 14A has the largest current distribution area and the highest radiation efficiency, but is taller than the others.

In FIGS. 14 (2), (3), and (4), the structures are different, but the heights are the same. Among them, the current distribution area is the largest and the radiation efficiency is the highest.
This is the top loading type shown in FIG.

The structure of the antenna device AS1 is shown in FIG.
Since the antenna is of the top loading type shown in (3), the radiation efficiency at the same height is higher than that of the conventional antenna device AS13 (helical type). Further, the conventional antenna device A
Since S13 is itself a radiating element, it must form a reactance perpendicular to the ground plane. On the other hand, the reactance element 30 of the antenna device AS1
Is a top-loading reactance element 30, so that the main radiation of the antenna device AS1 is performed by the linear conductor 40. Therefore, the installation direction of the reactance element 30 in the longitudinal direction does not need to be perpendicular to the ground plane. For this purpose, in the antenna device AS1, the reactance element 30 is installed such that the longitudinal direction of the reactance element 30 is parallel to the ground plane.

Usually, the electrode pattern around the radiation element is
Since it has a very large effect on radiation, mounted components and the like cannot be arranged around the radiation element. As a result, in the conventional antenna device AS13, a large amount of useless space is generated in the printed board 9 in the lateral direction with respect to the ground plane. On the other hand, the antenna device A
In S1, the reactance element 30 can be installed laterally with respect to the ground plane, so that useless space can be reduced, and the reactance element 30 can be installed sufficiently long in the horizontal direction, so that a large reactance value is obtained. be able to. As a result, in the above embodiment, the frequency can be reduced in the same space as the conventional example.

FIGS. 15 and 16 are diagrams showing the directivity characteristics of the antenna device AS1.

According to the directivity characteristics, the directivity in the reverse direction with respect to the feeding point 50 of the printed board (evaluation board) 10 is enhanced. This indicates that the directivity in the direction in which the antenna is bent with respect to the ground plane is strong due to the principle of radio wave radiation. Due to this effect, the directivity is biased, and the influence on the human brain can be reduced as compared with a completely omnidirectional state. Further, from the principle of the directivity of the antenna, the radiation pattern can be changed by changing the position of the feeding point.

[0072]

According to the present invention, there are the effects of being small in size, easy to mount, wide in bandwidth, high in radiation efficiency, and reducing wasted space inside the housing.

Further, according to the present invention, there is an effect that the directivity is deviated and the influence on the human brain can be reduced as compared with a state of no directivity.

Further, according to the present invention, the radiation pattern can be changed by changing the position of the feed point, based on the principle of the directivity of the antenna.

[Brief description of the drawings]

FIG. 1 shows an antenna apparatus AS according to a first embodiment of the present invention.
FIG.

FIG. 2 is a perspective view illustrating a configuration of an antenna device AS1.

FIG. 3 is an equivalent circuit diagram of the antenna device AS1.

FIG. 4 is a perspective view showing a reactance element 30 in the antenna device AS1.

FIG. 5 is a developed view showing a reactance element 30 in the antenna device AS1.

6 is a structural perspective view showing a reactance element 30a used in place of the reactance element 30. FIG.

FIG. 7 is an expanded view of a reactance element 30a.

FIG. 8 shows an antenna device AS according to a second embodiment of the present invention.
FIG.

FIG. 9 is a perspective view illustrating a configuration of an antenna device AS2.

FIG. 10 is a diagram showing an equivalent circuit of the antenna device AS2.

FIG. 11 shows an antenna device A according to a third embodiment of the present invention.
It is a perspective view which shows S3.

FIG. 12 shows an antenna device A according to a fourth embodiment of the present invention.
It is a perspective view which shows S4.

FIG. 13 is a diagram showing VSWR characteristics in the above embodiment and a conventional example.

FIG. 14 is a conceptual diagram illustrating a current distribution of an antenna, and is a diagram illustrating a difference in current distribution in a structure of a quarter-wave monopole antenna.

FIG. 15 is a diagram showing the directivity characteristics of the antenna device AS1.

FIG. 16 is a diagram showing the directivity characteristics of the antenna device AS1.

FIG. 17 is a diagram showing conventional antenna devices AS11 to AS13 mainly used for mobile phones.

FIG. 18 is a perspective view showing a relationship between a conventional chip antenna AS13 and its periphery when the chip antenna AS13 is mounted.

FIG. 19 is a diagram showing an equivalent circuit of a conventional chip antenna AS13.

[Explanation of symbols]

 AS1 to AS4: Antenna device, 10: Printed circuit board, 11: Land pattern for fixing the antenna, 20: GND pattern, 30: Reactance element in the shape of a rod, 40: Linear conductor pattern for power supply and radiation, 41: Linear shape for GND connection Conductor pattern, 50: feeding point, 60: housing.

Continued on the front page F term (reference) 5J046 AA03 AA07 AA09 AB00 AB06 PA00 PA02 PA04 TA04 5J047 AA03 AA07 AA09 AB00 AB06 FD01 FD06

Claims (5)

[Claims] An antenna device used for mobile communication or a local area network, provided inside or on a surface of a base made of a dielectric material or a magnetic material, comprising a meandering conductor or a helical conductor. A reactance element comprising a first conductor configured, wherein the length of the first conductor in the traveling direction is longer than the length in a direction perpendicular to the first conductor; and a linear conductor provided on a predetermined printed circuit board. A linear conductor pattern formed by a pattern and having one end electrically connected to the first conductor; provided at one longitudinal end of the surface of the base, the other end of the linear conductor pattern; And a power supply terminal connected to the printed circuit board. Is installed, an antenna apparatus characterized by the longitudinal direction of the longitudinal and the reactance element of the linear conductor pattern is arranged vertically and constitutes the inverted L-type. 2. An antenna device for use in mobile communication or a local area network, wherein the antenna device is provided inside or on a surface of a base made of a dielectric material or a magnetic material, and has a meandering conductor or a helical conductor. A reactance element comprising a first conductor configured, wherein the length of the first conductor in the traveling direction is longer than the length in a direction perpendicular to the first conductor; and a linear conductor provided on a predetermined printed circuit board. A first linear conductor pattern formed by a pattern and having one end electrically connected to the first conductor; and a first straight line provided at one longitudinal end of the surface of the base. Power supply terminal connected to the other end of the conductor pattern; a GND connection straight line connecting a part of the first conductor and a ground pattern on the printed circuit board; Have; and body pattern
On the printed circuit board, the reactance element is provided in a portion where the ground pattern does not exist on both surfaces, and the longitudinal direction of the first linear conductor pattern and the longitudinal direction of the reactance element are arranged perpendicularly, An antenna device, wherein a longitudinal direction of the GND connection linear conductor pattern and a longitudinal direction of the reactance element are arranged perpendicular to each other to form an inverted-F type. 3. The mounting terminal according to claim 1, wherein the other end of the first conductor is drawn out from the surface of the reactance element; and the ground pattern does not exist in the printed circuit board. A trimming conductor pattern that is provided on a portion, is electrically connected to the mounting terminal, and can be trimmed by laser or sand blast. 4. An antenna device used for mobile communication or a local area network, wherein the antenna device is provided inside or on a surface of a base made of a dielectric material or a magnetic material and comprises a meandering conductor or a helical conductor. A reactance element comprising a first conductor configured, wherein the length of the first conductor in the traveling direction is longer than the length in the perpendicular direction; and one end is electrically connected to the first conductor. A linear conductor; and a power supply terminal provided at one longitudinal end of the surface of the base and connected to the other end of the linear conductor; and the reactance element is a predetermined printed circuit board. The longitudinal direction of the linear conductor and the longitudinal direction of the reactance element are arranged perpendicular to the portion other than the upper portion, and constitute an inverted L-shape. Antenna equipment. 5. An antenna device for use in mobile communication or a local area network, wherein the antenna device is provided inside or on a surface of a base made of a dielectric material or a magnetic material, and comprises a meandering conductor or a helical conductor. A reactance element comprising a first conductor configured, wherein the length of the first conductor in the traveling direction is longer than the length in the perpendicular direction; and one end is electrically connected to the first conductor. A first linear conductor; a power supply terminal provided at one longitudinal end of the surface of the base and connected to the other end of the first linear conductor;
, And a GND conductor for connecting a ground pattern on a predetermined printed circuit board;
The reactance element is fixedly arranged on a portion other than on a predetermined printed circuit board, the longitudinal direction of the first linear conductor and the longitudinal direction of the reactance element are vertically arranged, and the linear shape for GND connection is formed. An antenna device, wherein a longitudinal direction of a conductor pattern and a longitudinal direction of the reactance element are arranged perpendicular to each other to form an inverted-F type.