CN208284635U - A kind of high-gain patch antenna system of differential feed - Google Patents
A kind of high-gain patch antenna system of differential feed Download PDFInfo
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- CN208284635U CN208284635U CN201820423929.9U CN201820423929U CN208284635U CN 208284635 U CN208284635 U CN 208284635U CN 201820423929 U CN201820423929 U CN 201820423929U CN 208284635 U CN208284635 U CN 208284635U
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Abstract
The utility model relates to a kind of high-gain patch antenna systems of differential feed, including the first electric bridge, broadside paster antenna；First electric bridge tool there are four port, the second port of first port, the first electric bridge including the first electric bridge, the third port of the first electric bridge, the first electric bridge the 4th port；The broadside paster antenna has two broadsides；First electric bridge is connected to the broadside paster antenna.The differential feed mode that the utility model uses 180 ° of electric bridges to constitute, so that forcibly generating 180 ° of phase difference at the two sides broadside of the broadside paster antenna of electric bridge connection, this kind of feeding classification can make broadside paster antenna realize stable, symmetrical TM10 mode in a wider bandwidth, and guarantee that the electric field above broadside paster antenna remains same phase, to improve antenna gain.The antenna gain of the wideband patch antenna system of differential feed is 9dBi in the utility model, improves at least 3dB than common paster antenna.
Description
Technical field
The utility model relates to a kind of antenna system, in particular to a kind of high-gain patch day using differential feed mode
Linear system system.
Background technique
Antenna is a kind of element for having transmission and sending electromagnetic energy.Antenna can convert electromagnetic field for electromagnetic energy
It blazes abroad, while electromagnetic wave can be received by converting electromagnetic energy for the electromagnetic field in space again.Paster antenna,
Referred to as microstrip antenna, PATCH antenna are antenna devices common in a kind of this field.The major advantage of paster antenna is it
Can be mutually compatible with PCB technology, and structure is simple, it is easy to process to produce and integrate.As shown in Figure 1, patch day under normal conditions
Line works under its basic mode-TM10 mode, i.e., ideally electric field is in Sine distribution in X direction, is in divide equally to divide along Y-direction
Cloth.Antenna gain refers to that under conditions of input power is equal, actual antennas and ideal radiating element are in space same point
The ratio between the power density of generated signal is capable of the degree of one day bundle of lines input power concentrated radiation of quantitative description.It
Line gain and antenna radiation pattern have substantial connection, and antenna radiation pattern main lobe is narrower, and minor lobe is smaller, then antenna gain is higher.Antenna
Gain can be used to measure antenna towards the ability of a specific direction receiving and transmitting signal.Under normal conditions, the antenna gain of paster antenna
Between 5-6dBi.And in the prior art, in order to improve the gain of paster antenna, usually utilize multiple patch antenna element groups
At array structure, however which introduces the loss of feeding network, so that theoretic maxgain value be not achieved.
The feeding classification of paster antenna generally includes micro-strip direct feed, probe feed and microstrip coupled feed, such as schemes
Shown in 2A and 2B, wherein Fig. 2A is probe feed mode, and Fig. 2 B is microstrip coupled feeding classification.However, it is above-mentioned in the prior art
Common feeding classification all have a problem that, i.e., which kind of either above-mentioned feeding classification, feed structure be all it is asymmetric,
And as a result, antenna radiation pattern is only symmetrical near resonance frequency caused by feed structure asymmetry；It is humorous when deviateing
After vibration frequency, antenna radiation pattern is by run-off the straight or asymmetric situation, at this point, the gain of antenna lessens.
Utility model content
To overcome the problems in correlation technique, Antenna Design is carried out in the case where current PCB technology is horizontal, promotes patch
The gain of antenna, the utility model embodiment provide a kind of high-gain patch antenna system using differential feed mode, should
Technical solution is as follows:
A kind of antenna system, including the first electric bridge, broadside paster antenna；There are four ports for the first electric bridge tool, including
The first port of first electric bridge, the second port of the first electric bridge, the third port of the first electric bridge, the first electric bridge the 4th port；
The broadside paster antenna has two broadsides；First electric bridge is connected to the broadside paster antenna.
Wherein, first electric bridge is 180 ° of electric bridges.
Wherein, the first port of first electric bridge carries out feed input, the second end of the first electric bridge as feed port
Mouth, the 4th port are then used as output port to carry out difference output, and the third port and first port of the first electric bridge are mutually isolated.
Wherein, the second port of first electric bridge, the 4th port are respectively connected to two articles of broadsides of broadside paster antenna.
Wherein, the third port property of the can choose ground short circuit of first electric bridge or open circuit or access matching are negative
It carries.
Wherein, broadside paster antenna works under TM10 mode.
Wherein, the width edge length of the broadside paster antenna is 2 transmission line wavelength, the narrow side of the broadside paster antenna
Length is 0.5 transmission line wavelength.
Technical solution provided by the embodiment of the utility model has the benefit that the difference constituted using 180 ° of electric bridges
Feeding classification, so that 180 ° of phase difference is forcibly generated at the two sides broadside of the broadside paster antenna of electric bridge connection, due to
The symmetry for the feed structure that 180 ° of electric bridges are constituted, above-mentioned 180 ° of phase difference can be held up in a wider bandwidth,
Thus this kind of feeding classification can make broadside paster antenna realize stable, symmetrical TM10 mould in a wider bandwidth
Formula, and guarantee that the electric field above broadside paster antenna remains same phase, from raising antenna gain.Difference is presented in the utility model
The antenna gain of the wideband patch antenna system of electricity is 9dBi, improves at least 3dB than common paster antenna.The antenna
Another advantage of system is that the impedance of feed port can voluntarily without the design of any mating structure or network
It is matched.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of paster antenna in the prior art.
Fig. 2A is the probe feed schematic diagram of paster antenna in the prior art.
Fig. 2 B is the feed microstrip line schematic diagram of paster antenna in the prior art.
Fig. 3 is the schematic illustration of broadside patch antenna system in the utility model.
Fig. 4 is the schematic illustration of the 180 ° of electric bridges used in the utility model.
Including, antenna system 3, the first electric bridge 31, broadside paster antenna 32, the first electric bridge 31 first port 311,
The second port 312 of first electric bridge 31, the third port 313 of the first electric bridge 31, the first electric bridge 31 314,180 ° of the 4th port
4th port of 43,180 ° of electric bridges of third port of 42,180 ° of electric bridges of second port of 41,180 ° of electric bridges of first port of electric bridge
44。
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In order to guarantee the symmetry of antenna radiation pattern, while increasing the gain of paster antenna, the utility model proposes such as
The broadside patch antenna system shown in Fig. 3 that differential feed is carried out using 180 ° of electric bridges.Aerial system involved in the utility model
System 3 is as shown in figure 3, the antenna system 3 includes the first electric bridge 31, broadside paster antenna 32.Wherein, the first electric bridge 31 is 180 ° of electricity
Bridge, there are four ports for 180 ° of electric bridges tool.It can be seen that the antenna system 3 in the utility model includes two crucial microwave structures
Module: the first electric bridge 31 is 180 ° of electric bridges and broadside paster antenna 32.
Shown in Figure 4, the characteristic for 180 ° of electric bridges being applied in the present invention is as follows, and wherein λ represents work frequency
The wavelength of rate: 180 ° of electric bridges have there are four port, i.e. first port 41, second port 42, third port 43, the 4th port 44,
In aforementioned four port include a differential port, one and port, and other two port both can be used as output port or
It can be used as input port；When signal is inputted by differential port, then 180 ° of the signal phase difference of two output ports；When signal by
With the same phase of signal of then two output ports when the input of port；When simultaneously by two input port input signals, then in differential ends
The sum of the difference of mouth output signal and port output signal.The collision matrix S that 180 ° of electric bridge characteristics can be clearly described is as follows:
It is exported since 180 ° of electric bridges can generate two-way in a wider bandwidth range, and the two-way output signal
180 ° of phase phase difference, i.e. two-way micro-strip output is difference output.First electric bridge 31 is the circuit structure using above-mentioned 180 ° of electric bridges.
For example, according to the collision matrix S parameter of 180 ° of electric bridge characteristics, if being carried out in the second port of 180 ° of electric bridges, the 4th port
Feed input, then obtain differential output signal in the other two port of 180 ° of electric bridges.
With continued reference to shown in Fig. 3, the first electric bridge 31 is four port networks, first port 311 including the first electric bridge 31, the
The second port 312 of one electric bridge 31, the third port 313 of the first electric bridge 31, the first electric bridge 31 the 4th port 314；Wherein,
The first port 311 of one electric bridge 31 carries out feed input, the second port 312 of the first electric bridge 31, the 4th end as feed port
Mouthfuls 314 then carry out difference output as output port, the third port 313 and first port 1311 of the first electric bridge 31 mutually every
From；The second port 312 of first electric bridge 31, the 4th port 314 are respectively connected to two articles of broadsides 321 of broadside paster antenna 32,
For motivating the broadside paster antenna 32.The third port 313 of first electric bridge 31 can choose short circuit, open circuit or access
Matched load.
Another crucial microwave structure module of the antenna system 3 is broadside paster antenna 32, broadside paster antenna
32 shape is rectangle, and the broadside paster antenna 32 has two broadsides 321 and two narrow sides；Two broadsides 321
Radiating side as the broadside paster antenna 32.The gain of microstrip antenna, that is, paster antenna results from two broadsides of its micro-strip；
As shown in figure 3, the dotted line in broadside paster antenna 32 is the edge for indicating the antenna；It is found that the edge length of microstrip antenna is got over
Long, then microstrip antenna size is bigger, and antenna gain is also higher.However, broadside paster antenna 32 is under common feeding classification,
Under micro-strip direct feed, probe feed, microstrip coupled feeding classification, the antenna gain of the broadside paster antenna 32 is
9.5dBi, it is 3dB higher than the antenna gain of common paster antenna, however cannot keep broadside patch under common feeding classification
The same phase of electric field above antenna 32, if the electric field difference phase on broadside paster antenna 32, the antenna can not generate high day
Line gain.
Using the above-mentioned differential feed structure proposed in the utility model, the i.e. second port the 312, the 4th of the first electric bridge 31
Port 314 is respectively connected to two broadsides 321 of broadside paster antenna 32, and the second port 312 of the first electric bridge 31, the 4th end
Mouth 314 is used as output port output difference signal, so that there are 180 ° on two broadsides 321 of 32 two sides of broadside paster antenna
Phase difference；Due to the symmetry of structure, the output of first electric bridge 31 can keep 180 ° in a wider bandwidth range
Phase difference can enable broadside paster antenna 32 to realize in a wider bandwidth range using above-mentioned differential feed mode
Stable, symmetrical TM10 mode, and the electric field above broadside paster antenna 32 is able to maintain same phase always, to improve antenna
Gain；As seen from Figure 3, the output of the first electric bridge 31 is to component of the signal vector in X/Y plane of two broadsides 321 due to existing
180 ° of phase difference and cancel out each other, and the Z component of output signal vector is radiated after being superimposed in Z-direction, thus may be used
To remain the same phase of electric field.The common paster antenna of the 9dBi ratio of gains that the antenna system has improves at least 3dB.Institute
The another advantage for stating antenna system is that the impedance of feed port can without the design of any mating structure or network
Voluntarily matched.
The length of the broadside 321 of the broadside paster antenna 32 is 2 transmission line wavelength, the broadside paster antenna 32
Narrow side length is 0.5 transmission line wavelength.
For each Installation practice above-mentioned, for simple description, therefore, it is stated as the combinations of a series of unit, but
It is that those skilled in the art should be aware of, the utility model is not limited by the combination of described unit, because according to this
Utility model, certain units can be executed using other units；Secondly, those skilled in the art should also know that, above-mentioned apparatus
Embodiment belongs to preferred embodiment, and related unit is not necessarily required by the utility model.
Above-described specific embodiment, to the purpose of the utility model embodiment, technical scheme and beneficial effects into
Gone further description, it should be understood that the foregoing is merely the specific embodiment of the utility model embodiment and
, be not used to limit the utility model embodiment protection scope, it is all the utility model embodiment spirit and principle it
Any modification, equivalent substitution, improvement and etc. that are interior, being done, should be included within the protection scope of the utility model embodiment.
Claims (7)
1. a kind of antenna system, it is characterised in that: including the first electric bridge, broadside paster antenna；There are four the first electric bridge tools
Port, the second port of first port, the first electric bridge including the first electric bridge, the third port of the first electric bridge, the first electric bridge
4th port；The broadside paster antenna has two broadsides；First electric bridge is connected to the broadside paster antenna.
2. antenna system according to claim 1, wherein first electric bridge is 180 ° of electric bridges.
3. antenna system according to claim 2, wherein the first port of first electric bridge is carried out as feed port
Feed input, the second port of the first electric bridge, the 4th port are then used as output port to carry out difference output, the third of the first electric bridge
Port is mutually isolated with first port.
4. antenna system according to any one of claim 1-3, wherein the second port of first electric bridge, the 4th
Port is respectively connected to two broadsides of broadside paster antenna.
5. antenna system according to any one of claim 1-3, wherein the third port short circuit of first electric bridge,
Or open a way or access matched load.
6. antenna system according to any one of claim 1-3, wherein broadside paster antenna works in TM10 mode
Under.
7. antenna system according to any one of claim 1-3, wherein the width edge length of the broadside paster antenna is
2 transmission line wavelength, the narrow side length of the broadside paster antenna are 0.5 transmission line wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820423929.9U CN208284635U (en) | 2018-03-28 | 2018-03-28 | A kind of high-gain patch antenna system of differential feed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820423929.9U CN208284635U (en) | 2018-03-28 | 2018-03-28 | A kind of high-gain patch antenna system of differential feed |
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| CN208284635U true CN208284635U (en) | 2018-12-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021170057A1 (en) * | 2020-02-27 | 2021-09-02 | 华为技术有限公司 | Antenna system and access network device |
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2018
- 2018-03-28 CN CN201820423929.9U patent/CN208284635U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021170057A1 (en) * | 2020-02-27 | 2021-09-02 | 华为技术有限公司 | Antenna system and access network device |
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Address after: 519000 Three 603-3, 101 University Road, Tangjiawan Town, Zhuhai High-tech Zone, Guangdong Province Patentee after: Zhuhai Weidu Xinchuang Technology Co., Ltd. Address before: 100089 7th Floor 0707, Block D, Tongfang Science and Technology Building, No. 1 Wangzhuang Road, Haidian District, Beijing Patentee before: Beijing micro core technology Co., Ltd. |
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