CN108232471B - Four-way antenna - Google Patents
Four-way antenna Download PDFInfo
- Publication number
- CN108232471B CN108232471B CN201711479938.6A CN201711479938A CN108232471B CN 108232471 B CN108232471 B CN 108232471B CN 201711479938 A CN201711479938 A CN 201711479938A CN 108232471 B CN108232471 B CN 108232471B
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- China
- Prior art keywords
- antenna
- microstrip
- antennas
- mounting base
- base plate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
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- Waveguide Aerials (AREA)
- Details Of Aerials (AREA)
Abstract
The invention discloses a four-way antenna, comprising: two microstrip antennas, two monopole antennas and an installation bottom plate; the two microstrip antennas and the two monopole antennas are fixed on the mounting base plate, and the radiation directions of the two microstrip antennas are opposite; the two monopole antennas are respectively fixed on two sides of the two microstrip antennas; aiming at the characteristic that the existing carrier flies or runs at a high speed, the invention adopts a mode of combining a microstrip antenna and a monopole antenna, realizes the integrated design of the omnidirectional function and the directional function of the antenna by controlling the phase difference of antenna units on the basis of keeping miniaturization and conformality, and can keep better electrical property in any direction in a horizontal plane.
Description
Technical Field
The invention relates to the field of antenna research, in particular to a four-way antenna.
Background
Under the development trend that the global industry requires electronic products to be light, thin, short and small, the antenna is used as a carrier device necessary for communication and has the advantages of miniaturization, light weight and high performance. Microstrip antennas and monopole antennas are the two most common forms due to their simple structure, low profile, light weight, and easy conformability. The performance of the antenna as an electromagnetic wave generating and radiating device is largely limited by the shape and size of the radiator. The directional characteristic of a single antenna form is usually fixed, and how to realize the integrated design of the directional function and the omnidirectional function under a smaller size becomes a greater problem. To meet the antenna requirements in the current application scenario, the existing design focus has been on the implementation of small size and directional, omnidirectional radiation.
The existing airborne antenna usually adopts a form of a microstrip antenna or a monopole antenna, both of which are linearly polarized antennas, and is particularly suitable for being used as a conformal antenna to be attached to the surface of a carrier to work, the radiation characteristics of the antenna are fixed, and the integrated design of directional and omnidirectional functions is difficult to realize through a single antenna. Therefore, the conventional mode is realized by a group array (circular array), if the antenna works in an L frequency band, in order to ensure the performance requirement of the antenna, the unit spacing is close to lambda/2, the transverse and longitudinal dimensions are too large, the requirements of miniaturization and co-shaping cannot be met, and the directional performance of the antenna is poor.
Disclosure of Invention
The invention provides a four-way antenna, which solves the existing defects, and aims at the characteristic that the existing carrier flies or runs at a high speed.
To achieve the above object, the present application provides a four-way antenna, including:
two microstrip antennas, two monopole antennas and an installation bottom plate; the two microstrip antennas and the two monopole antennas are fixed on the mounting base plate, and the radiation directions of the two microstrip antennas are opposite; the two monopole antennas are respectively fixed on two sides of the two microstrip antennas.
The existing four-way antenna generally adopts a microstrip antenna or a monopole antenna as a radiator to form a circular array to realize an omnidirectional function, which causes the overlarge integral size of the antenna and poor directional performance.
In the scheme, the antenna is placed on a grounding plate with the radius of lambda in a mode that two microstrip antennas face back to back, radiation in opposite directions is achieved, the two monopole antennas are respectively placed on two sides of the microstrip antenna, and due to the reflection effect of the microstrip antenna, a radiation directional diagram can cover two lateral directions. The overall size of the antenna can be effectively reduced through the arrangement mode, the radiation pattern can cover the whole horizontal plane, and the overall height of the antenna is about 0.4 lambda.
The number of the units is properly selected for feeding, the phase difference between the units is adjusted to realize the synthesis of directional diagrams, directional radiation and omnidirectional radiation directional diagrams of any angle in a horizontal plane are obtained, and the distance between the microstrip antenna and the monopole antenna is adjusted to improve the omnidirectional performance of the radiation directional diagrams. Finally, the directional maximum gain of the antenna is not lower than 2.5dB, the omnidirectional maximum gain is not lower than-1 dB, and the out-of-roundness is not more than 3 dB.
Furthermore, a slot structure is arranged on the microstrip patch in the microstrip antenna.
Furthermore, the installation bottom plate is made of aluminum or stainless steel, and the surfaces of the microstrip antenna and the installation bottom plate are plated and coated.
Furthermore, the microstrip antenna is fixedly connected with the mounting bottom plate by screws; the radio frequency socket is fixed on the mounting bottom plate through screws, the inner core of the socket is in contact with the feed position of the microstrip antenna, and the contact position is sealed through soldering and welding.
Further, the four-way antenna still includes the antenna house, and the antenna house passes through rivet riveting in mounting plate, and two microstrip antenna, two monopole antenna, mounting plate all are located the antenna house, adopt the foaming material to fill in the cavity that forms between antenna house and the mounting plate.
Furthermore, the microstrip antenna is of a double-layer plate structure, the metal patch is attached to the upper surface of the upper-layer printed board, the upper surface of the lower-layer printed board is integrally coated with copper, the feed network is located on the lower surface of the lower-layer printed board, and the space between the two layers of printed boards is filled with foaming materials.
Further, the radius of the mounting baseplate is lambda.
Further, the overall height of the antenna is about 0.4 λ.
Furthermore, any three of the two microstrip antennas and the two monopole antennas can be fed or fed completely, and the phase difference can be adjusted by the rear-end phase shifter to obtain directional beams or omnidirectional radiation characteristics in any direction in the horizontal plane.
One or more technical solutions provided by the present application have at least the following technical effects or advantages:
technical scheme in this application can satisfy the electrical property demand, keeps less size, makes the aerodynamic of carrier not influenced.
The antenna can obtain directional beams in any direction in a horizontal plane by feeding any three of two microstrip antennas and two monopole antennas and adjusting the phase difference among the three antennas by using a rear-end phase shifter; if four units are fed simultaneously, the omnidirectional radiation characteristic in the horizontal plane can be realized. The radiation effect is good, the directional maximum gain is not less than 2.5dB, the omnidirectional maximum gain is not less than-1 dB, and the out-of-roundness is not more than 3 dB.
The antenna has the advantages of simple structure, light weight, stable electrical property, higher isolation between units, easy conformation with a carrier and suitability for mass production.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention;
fig. 1 is a schematic structural diagram of a four-way antenna in the present application;
1 shows an antenna radiator 1; 2 shows an antenna radiator 2; 3, an antenna feeding part; the antenna radiator 1 is shown with a slotted structure 4.
Detailed Description
The invention provides a four-way antenna, which solves the existing defects, and aims at the characteristic that the existing carrier flies or runs at a high speed.
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
Referring to fig. 1, the radiator adopts a printed microstrip circuit, the microstrip patch is slotted, and the mounting base plate is milled by aluminum material to achieve lighter weight; the surfaces of the radiator and the mounting base plate are all treated by plating and coating which have good conductivity and are easy to weld, such as: conductive oxidation, gold plating, silver plating, tin plating, and the like; the radiator and the mounting bottom plate are fixedly connected by screws; the radio frequency socket is fixed on the mounting base plate through screws, the inner core of the socket is contacted with the feed position of the radiator, and the contact position is welded and sealed through tin soldering; the periphery of the whole antenna is protected by an antenna housing, and the antenna housing is riveted to the mounting bottom plate through rivets; and filling a cavity formed between the antenna housing and the metal bottom plate with a foaming material.
The antenna is composed of a microstrip patch antenna and a monopole antenna. The monopole is positioned at two sides of the microstrip antenna, and is printed on the upper surface of the single-layer printed board, and the back surface of the monopole is partially coated with copper; the two microstrip antennas are oppositely arranged at the central position, each microstrip antenna is of a double-layer plate structure, the metal patches are attached to the upper surface of the upper-layer printed board, the upper surface of the lower-layer printed board is integrally coated with copper, the feed network is located on the lower surface of the lower-layer printed board, and the space between the two layers of printed boards is filled with foaming materials.
The whole antenna structure in this scheme mainly includes: microstrip paster, monopole, reflecting plate. If the reflecting plate is removed, the dipole structure can be replaced by a monopole structure to realize the function.
The materials in the scheme can be replaced according to different use environments. The aluminum material can be replaced by stainless steel, and the antenna housing can be replaced by common plastic material.
The radiator in the present invention is not limited to a certain frequency band, and the technology used in any frequency band should be protected.
In the present invention, the shape, arrangement and material properties of the radiator should be protected, including the shape similar to the present invention, and the shape after deformation processing such as tilting and twisting, and any design way of the antenna radiator which is not mentioned but is consistent with or similar to the principle of the present invention is within the protection scope of the present application.
In the invention, the radiator can adopt a printed board form to realize a complete replacement design, and a design mode similar to the invention by adopting a printed board technology also belongs to the scope of the invention and is in the protection scope of the invention.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A four-way antenna, characterized in that the antenna comprises:
two microstrip antennas, two monopole antennas and an installation bottom plate; the two microstrip antennas and the two monopole antennas are fixed on the installation bottom plate, the two microstrip antennas are fixed at the central position of the installation bottom plate in a back-to-back mode, and the radiation directions of the two microstrip antennas are opposite; the two monopole antennas are respectively fixed on two sides of the two microstrip antennas, the radius of the mounting base plate is lambda, and the overall height of the antenna is 0.4 lambda; selecting any three feeds of the two microstrip antennas and the two monopole antennas, and adjusting the phase difference among the three antennas by using a rear-end phase shifter to obtain directional beams in any direction in a horizontal plane; if the four units are simultaneously fed, an omnidirectional beam in a horizontal plane is formed.
2. The quadriversal antenna of claim 1, wherein the microstrip patch of the microstrip antenna is provided with a slotted structure.
3. The four-way antenna according to claim 1, wherein the mounting base plate is made of aluminum or stainless steel, and the surfaces of the microstrip antenna and the mounting base plate are plated.
4. The four-way antenna according to claim 1, wherein the microstrip antenna is fixedly connected with the mounting base plate by screws; the radio frequency socket is fixed on the mounting bottom plate through screws, the inner core of the socket is in contact with the feed position of the microstrip antenna, and the contact position is sealed through soldering and welding.
5. The quadriversal antenna of claim 1, further comprising a radome riveted to the mounting base plate by a rivet, wherein the two microstrip antennas, the two monopole antennas and the mounting base plate are all located in the radome, and a cavity formed between the radome and the mounting base plate is filled with a foam material.
6. The quadriversal antenna of claim 1, wherein the microstrip antenna is of a double-layer structure, the metal patch is attached to the upper surface of the upper printed board, the upper surface of the lower printed board is coated with copper, the feed network is positioned on the lower surface of the lower printed board, and the space between the two printed boards is filled with foaming materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711479938.6A CN108232471B (en) | 2017-12-29 | 2017-12-29 | Four-way antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711479938.6A CN108232471B (en) | 2017-12-29 | 2017-12-29 | Four-way antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108232471A CN108232471A (en) | 2018-06-29 |
| CN108232471B true CN108232471B (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711479938.6A Active CN108232471B (en) | 2017-12-29 | 2017-12-29 | Four-way antenna |
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| Country | Link |
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| CN (1) | CN108232471B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1751418A (en) * | 2003-02-19 | 2006-03-22 | 松下电器产业株式会社 | Antenna assembly |
| CN102509879A (en) * | 2011-12-14 | 2012-06-20 | 上海交通大学 | Circular polarized antenna with omnidirectional broad axial ratio beam width |
| CN103004018A (en) * | 2010-07-19 | 2013-03-27 | 莱尔德技术股份有限公司 | Multiple-antenna systems with enhanced isolation and directivity |
| CN106785359A (en) * | 2016-11-22 | 2017-05-31 | 四川九洲电器集团有限责任公司 | A kind of directional aerial |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201655979U (en) * | 2010-04-02 | 2010-11-24 | 旭丽电子(广州)有限公司 | Combined type multi-input multi-output antenna module and system thereof |
-
2017
- 2017-12-29 CN CN201711479938.6A patent/CN108232471B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1751418A (en) * | 2003-02-19 | 2006-03-22 | 松下电器产业株式会社 | Antenna assembly |
| CN103004018A (en) * | 2010-07-19 | 2013-03-27 | 莱尔德技术股份有限公司 | Multiple-antenna systems with enhanced isolation and directivity |
| CN102509879A (en) * | 2011-12-14 | 2012-06-20 | 上海交通大学 | Circular polarized antenna with omnidirectional broad axial ratio beam width |
| CN106785359A (en) * | 2016-11-22 | 2017-05-31 | 四川九洲电器集团有限责任公司 | A kind of directional aerial |
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| Publication number | Publication date |
|---|---|
| CN108232471A (en) | 2018-06-29 |
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