CN207426162U - A kind of dual-band antenna feed system and dual-band antenna - Google Patents
A kind of dual-band antenna feed system and dual-band antenna Download PDFInfo
- Publication number
- CN207426162U CN207426162U CN201721478033.2U CN201721478033U CN207426162U CN 207426162 U CN207426162 U CN 207426162U CN 201721478033 U CN201721478033 U CN 201721478033U CN 207426162 U CN207426162 U CN 207426162U
- Authority
- CN
- China
- Prior art keywords
- band
- waveguide
- dual
- low
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Waveguide Aerials (AREA)
Abstract
The utility model discloses a kind of dual-band antenna feed systems.The feed system includes dual-frequency channel merger and Double frequency feed source；Dual-frequency channel merger includes common waveguide, balanced type orthomode coupler, high band input circular waveguide；Common waveguide is the circular waveguide being adapted to low-frequency range, and its one end inputs circular waveguide with high band by conical excessively waveguide and is connected；Balanced type orthomode coupler is used to the low-band signal of horizontal and vertical polarization direction being divided into two-way respectively, and passes through four orthogonal ports facing each other on common waveguide side wall and be respectively fed into common waveguide；Double frequency feed source includes corrugated horn；A both ends are provided in the cavity of common waveguide in coniform insulation dielectric stick, its one end interference fit ground insertion high band inputs circular waveguide, and the other end is extended out to along the axis of corrugated horn outside horn mouth.The invention also discloses a kind of dual-band antennas.The utility model can increase message capacity, reduce system cost.
Description
Technical field
The utility model is related to a kind of dual-band antenna more particularly to a kind of dual-band antenna feed systems.
Background technology
E-band（E frequency ranges）Refer to one section of frequency spectrum resource that frequency transmitting-receiving frequency range is 71--76GHz/81--86GHz, due to
It has very wide frequency bandwidth, and frequency spectrum resource is very abundant, particularly suitable for high speed data transfer communication system, thus
It is a popular research direction of the current communications field, ripe E--band communication systems are gradually applied to commercial field.Hair
E--band communication systems are opened up, then the antenna of the frequency range is the critical component that must develop.
If individually developing the antenna of a set of E-band systems, the resource that will certainly cause antenna control tower is more nervous, increases
Add the difficulty of electromagnetic compatibility, but also common carrier can be given to increase additional control tower rates, increase entirely run into
Sheet and the burden of consumer.If a kind of dual-band antenna can be designed, by the normal of E--band band antennas and current point-to-point communication
An antenna is integrated into band antenna, it will is an extraordinary selection.The dual-band antenna closes the antenna of two frequency ranges
Two be one, can effectively improve the integrated level of system, reduces the demand to control tower resource, reduces the running cost of operator, is
The developing direction of future microwave communication.Major communications equipment manufacturer including Huawei, NEC, Ericsson is all carried out at present
Research in terms of related E--band dual-band antennas.
Satellite communication and tracking radar field have many double frequencies even multifrequency antenna use example, such as S-band and
Ku wave bands share dual-band antenna, and Ku wave bands and Ka wave bands share dual-band antenna etc..But existing dual-band antenna at most only works and arrives
Ka frequency ranges, frequency are higher higher to Antenna Design manufacture requirement.There is presently no any a bags into the practice stage
The dual-band antenna of the frequency range containing E--band.Dual-band antenna generally includes primary reflection surface, subreflector, antenna house and feed system, and
The design of feed system therein is often key point.
For the dual-band antenna for being operable with E-band, the design difficulty of feed system is：1、 E--band
Frequency is very high, and higher than 4 times even 5 times or more of common point-to-point communication frequency, two so big frequency ranges of difference, which are realized, closes
Road device is extremely difficult, and with common duplexer scheme, low frequency can not to the low-pass filter usual manner of E-band frequency signals
It realizes；2nd, the diameter dimension of the feed circular waveguide of common point-to-point communication, which is much larger than, can inhibit the generation of E--band higher modes
Waveguide full-size, therefore complicated higher mode will necessarily have been encouraged during transmission E--band frequency band signals in common circular waveguide, it is high
The presence of secondary mould can seriously reduce the efficiency of antenna feed, while many resonance points can be formed in E-band frequency ranges, humorous
Signal can not transmit completely at shaking, form transmission zero, can not work completely at the Frequency point, and excessive higher mode is also
The performance of radiation pattern can be reduced, prevents it from the standard that reaches class-3；3：The frequency of E--band is very high,
Very high design accuracy and machining accuracy are needed, if using the form of coaxial waveguide, inner waveguide conductor adds since size is small
Work precision is high, it is difficult to be realized in actual engineer application.
In summary, there is an urgent need for a kind of E-band and common microwave point-to-point communication frequency range is made to share the feed of the same antenna
System to increase the message capacity of antenna, reduces the cost of whole system.
Utility model content
The technical problem to be solved by the utility model is to overcome the shortage of prior art, a kind of dual-band antenna feed is provided
System can make E-band or higher frequency range and common microwave point-to-point communication frequency range share the same antenna, so as to increase antenna
Message capacity reduces the cost of whole system.
The utility model specifically solves above-mentioned technical problem using following technical scheme：
A kind of dual-band antenna feed system, including be used to synthesize high band and low-band signal dual-frequency channel merger and
For radiating the Double frequency feed source of high and low frequency segment signal；The high band is E wave bands or higher frequency range；The dual-frequency combiner package
Include common waveguide, balanced type orthomode coupler, high band input circular waveguide；The common waveguide is to be adapted to the low-frequency range
Circular waveguide, its one end is connected by conical excessively waveguide with high band input circular waveguide；The balanced type is orthogonal
Mode coupler is used to the low-band signal of the low-band signal of horizontal polarization directions and vertical polarization directions being divided into two respectively
Road, and tetra- road signals of Jiang Zhe are respectively fed into common waveguide, two groups of phases by four ports facing each other on common waveguide side wall
Axis of two lines port Jing Guo common waveguide and orthogonal, the opposite two same poles of port feed-in of two lines
Change the two paths of signals in direction；The Double frequency feed source includes the corrugated horn that is adapted to the low-frequency range, the corrugated horn with it is public
The other end connection of waveguide；A both ends coaxial with common waveguide are provided in the cavity of the common waveguide in coniform
The insulation dielectric stick gradually to come to a point, one end interference fit ground of the insulation dielectric stick are inserted into the high band input circle ripple
It leads, the axis of the other end along the corrugated horn of the insulation dielectric stick is extended out to outside the horn mouth of corrugated horn.
Preferably, the dielectric constant of the insulation dielectric stick is 3.0~4.5.
Preferably, it is the quarter-wave ripple of low-band signal that the corrugated horn, which has at least twice depth,.
Preferably, the balanced type orthomode coupler is respectively by the T-shaped section in rectangular waveguide H face direction by level
The low-band signal of polarization direction and the low-band signal of vertical polarization directions are divided into two-way respectively.
Further, the two side of the vertical rectangular waveguide of the T-shaped section with horizontal rectangular waveguide junction respectively to
Indent.
Following technical scheme can also be obtained according to identical utility model thinking：
A kind of dual-band antenna, including as above feed system described in any technical solution.
Compared with prior art, technical solutions of the utility model have the advantages that：
The utility model realize E frequency ranges or higher frequency range shared with relatively low common microwave point-to-point communication frequency range it is same
The purpose of antenna, feed system medium-high frequency segment signal are not interfere with each other with low-band signal, and can be overcome common in dual-band antenna
The problem of defocusing, so as to obtain dual-band antenna of good performance.
The utility model is simple and compact for structure, and cost of implementation is low, is conducive to large-scale promotion application.
Description of the drawings
Fig. 1 is the principle schematic of the utility model feed system；
Fig. 2 is the structure diagram of one preferred embodiment of the utility model feed system；
Fig. 3 is the structure diagram of dual-frequency channel merger in preferred embodiment；
Fig. 4 is the structure diagram of Double frequency feed source in preferred embodiment；
Fig. 5 is the diagrammatic cross-section of Double frequency feed source in preferred embodiment；
Fig. 6 is the feed field pattern of low frequency signal；
Fig. 7 is the feed field pattern of high-frequency signal；
Fig. 8 is the feed antenna pattern of low frequency signal；
Fig. 9 is the feed antenna pattern of high-frequency signal.
Figure includes the following drawings mark：
1st, Double frequency feed source, 11, corrugated horn, 2, dual-frequency channel merger, 21 horizontal polarization directions low frequency signal input ports,
22nd, vertical polarization directions low frequency signal input port, 23, common waveguide, 24, high band input circular waveguide, 25, insulation dielectric
Stick, 26, rectangular waveguide, 27, recessed portion.
Specific embodiment
It is shared for E frequency ranges or higher frequency range with relatively low common microwave point-to-point communication frequency range present in the same antenna
Feed problem, the utility model proposes a kind of feed system, including for synthesizing the double frequency of high band and low-band signal
Combiner and the Double frequency feed source for radiating high and low frequency segment signal；The high band is E wave bands or higher frequency range；It is described double
Frequency combiner includes common waveguide, balanced type orthomode coupler, high band input circular waveguide；The common waveguide be with it is described
The circular waveguide of low-frequency range adaptation, its one end input circular waveguide with the high band by conical excessively waveguide and are connected；It is described
Balanced type orthomode coupler is used for the low-band signal of horizontal polarization directions and the low-band signal of vertical polarization directions point
Two-way is not divided into, and tetra- road signals of Jiang Zhe are respectively fed into public ripple by four ports facing each other on common waveguide side wall
It leads, two orthogonal, opposite ports of axis and two lines of two lines between two groups of opposite ports Jing Guo common waveguide
The two paths of signals of the same polarization direction of feed-in；The Double frequency feed source includes the corrugated horn being adapted to the low-frequency range, the ripple
Loudspeaker and the other end of common waveguide connect；A both ends coaxial with common waveguide are provided in the cavity of the common waveguide
In the coniform insulation dielectric stick gradually to come to a point, one end interference fit ground of the insulation dielectric stick is inserted into the high band
Circular waveguide is inputted, the axis of the other end along the corrugated horn of the insulation dielectric stick extends out to the loudspeaker of corrugated horn
Outside mouthful.
The dielectric constant of the insulation dielectric stick is preferably 3.0~4.5.
Similar with existing dual-band antenna feed system, the utility model feed system equally includes dual-frequency channel merger and double frequency
Feed, dual-frequency channel merger for high band and low-band signal to be synthesized in a common waveguide, Double frequency feed source be used for by it is high,
Low-band signal is radiated to primary reflection surface or subreflector.However, due to needing to transmit low frequency signal, which must
It to be so adapted with low frequency signal, size can necessarily inhibit the size of higher mode much larger than E--band, so if simply
Simply by high-frequency signal feed-in common waveguide as E-band, then many higher modes can be excited, these higher modes can be serious
Influence the performance of antenna；Since two signal frequencies in dual-frequency channel merger differ greatly, E--band frequencies are than Frequency
It high 4 times or 5 times or more, has been had no idea to realize the combiner completely with common duplexer technology.Therefore, this practicality is new
It is in the coniform insulation gradually to come to a point that type sets the both ends of one and common circle Waveguide coaxial in the cavity of public circular waveguide
Dielectric rod, as shown in Figure 1, using balanced type OMT（Orthomode coupler）By the low frequency of horizontal and vertical two polarization directions
Signal is respectively fed into common waveguide；For high-frequency signal, the high-frequency signal that high band is inputted in circular waveguide is first changed into medium
Signal in stick, then in the position feed-in of common circle waveguide core.In common waveguide, high-frequency signal is fettered with dielectric rod,
It is prevented, simultaneously because high-frequency signal is bound in dielectric rod, to prevent it from leaking into low frequency from evoking complicated higher mode
In port, so that there is high-frequency signal in low frequency port higher inhibition；Simultaneously as high band inputs circular waveguide（Its ruler
It is very little to be adapted with high band）Size has been much smaller than the deadline size of low frequency signal, therefore low frequency signal can not leak into height
Frequency port has the good dual-frequency channel merger structure inhibited mutually so as to obtain one.
In addition, the utility model using corrugated horn as feed, and make one end of insulation dielectric stick along ripple loudspeaker
Axis is extended out to outside the horn mouth of corrugated horn.When working in low-frequency range, main mould TE11 moulds are by corrugated horn
It forms beam radiation to go out, dielectric rod has little to no effect low frequency wave beam.When working in high band, by the circle being tapered
Taper medium stick end draws to form wave beam, and almost for high frequency waveforms, there is no influence for corrugated horn.High and low frequency is opposite
It is independent to separate, thus almost do not interfere with each other, it is easy to which that it is consistent to obtain high low end frequency antenna pattern phase center, 3dB lobes
It is essentially identical.So as to overcome the problems, such as defocusing common in existing dual-band antenna, dual-band antenna of good performance is obtained.
Fig. 2 shows the structure of one preferred embodiment of the utility model feed system（In order to facilitate observation of, which is perspective
Figure）.As shown in Fig. 2, it includes Double frequency feed source 1 and dual-frequency channel merger 2.
Fig. 3 shows the basic structure of dual-frequency channel merger 2, as shown in figure 3, dual-frequency channel merger 2 includes common waveguide 23, puts down
Weighing apparatus formula OMT, high band input circular waveguide 24；Common waveguide 23 is the circular waveguide being adapted to low-frequency range, and lower end passes through cone
Excessive waveguide is connected with high band input circular waveguide 24；A both ends are provided in circle along axis in 23 cavity of common waveguide
The insulation dielectric stick 25 that taper gradually comes to a point, the lower end interference fit ground insertion high band input circle ripple of insulation dielectric stick 25
Lead 24 upper ends.
A diameter of the 2.7 of insulation dielectric stick 25 in the present embodiment（Consider that the factor of E-band field distribution determines）, use
Be Altum materials, which is common materials, dielectric constant（About 3.15）It is appropriate, and the strength of materials is big, smaller
The length dimension that can be processed in the case of diameter is big.
The balanced type OMT is used for the low-band signal of the low-band signal of horizontal polarization directions and vertical polarization directions
Two-way is divided into respectively, and tetra- road signals of Jiang Zhe pass through four ports facing each other on 23 side wall of common waveguide（Opposite two
A horizontal polarization directions low frequency signal input port 21 and opposite two vertical polarization directions low frequency signal input ports 22）Point
Other feed-in common waveguide 23, two horizontal polarization directions low frequency signal input ports, 21 lines and two vertical polarization directions are low
Axis and two lines of the line Jing Guo common waveguide 23 between frequency signal input port 22 is mutually orthogonal.Due to opposite two
The necessary phase of the input signal of a port is identical, amplitude is equal, and the utility model is made using the T-shaped section in rectangular waveguide H faces direction
For waveguide power divider/combiner of same direction low frequency signal, so as to by vertical polarization directions low frequency signal/horizontal polarization directions
Low frequency signal is divided into the two-way that phase is identical, amplitude is equal.The utility model also T-shaped section vertical rectangular waveguide two side
One recessed portion to concave 27 is set respectively with horizontal rectangular waveguide junction, that is, reduces the vertical rectangular waveguide of T-shaped section
Port of export width, the design can be very good expand power splitter/combiner bandwidth, improve its performance.Balanced type OMT's
In each rectangular waveguide branch, corner can match resistance using 2 or multiple stair-stepping connection structures, the structure
It is anti-, obtain preferable echo.
As shown in figure 3, then the high-frequency signal in the present embodiment passes through one first by the rectangular waveguide feed-in of one section of WR12
90 degree of a rectangular waveguide are turned and a square circle conversion waveguiding structure feed-in high band input circular waveguide 24.It is high in the present embodiment
Frequency range inputs a diameter of 2.7mm of circular waveguide 24（The diameter of circular waveguide 24 can also be other numerical value, but for E frequency band signals,
Its maximum diameter cannot be more than 3.2mm, and serious higher mode otherwise can have been encouraged in circular waveguide）.Due to being inserted into high frequency
The tip of the insulation dielectric stick 25 of section input circular waveguide 24 is the conical by its shape of gradual change, and such grading structure can ensure E--
There is preferable echoing characteristics in band frequency ranges.Further, since the diameter of high band input circular waveguide 24 is much smaller than the electricity of low-frequency range
Magnetic wave cutoff wavelength, therefore the high band input circular waveguide 24 of the minor diameter is equivalent to a high-pass filtering for low-band signal
Device, therefore there is good rejection to low frequency signal.
The effect of feed is that electromagnetic wave signal is radiated to the structure of free space., it is necessary to use feed in dual-band antenna
Irradiate subreflector, it is therefore desirable to which the low frequency radiation directional diagram and high frequency radiation directional diagram of the feed have in identical phase
The heart, and lobe width and gain are roughly the same.In order to meet European class3 standards, and need to change Feed Horn with very low
Secondary lobe.It in conventional design, can only ensure the performance of a frequency, while take into account low frequency and E-band is then highly difficult.Fig. 4 and
Fig. 5 shows the basic structure of Double frequency feed source 1.As shown in Figure 4 and Figure 5, the main body of Double frequency feed source 1 is one and low-band signal
The corrugated horn 11 of adaptation, is connected with the upper end of common waveguide 23；The upper end edge corrugated horn 11 of insulation dielectric stick 25
Axis is extended out to outside horn mouth.From the sectional view of Fig. 5, the corrugated horn 11 of the present embodiment has three ripples, often
The depth of road ripple is the quarter-wave of low-band signal, for inhibiting the higher mode of low-frequency range.Actually it can also be used
Twice ripple or more ripples realize the function.
Fig. 6, Fig. 7 respectively illustrate the feed field pattern of low-band signal, high frequency band signal, it can be seen from the figure that
Low frequency signal is radiated by corrugated horn, and intermediate dielectric rod is nearly free from low frequency signal influence, the radiation side of low frequency signal
Determine that the diameter of corrugated horn determines the gain of low-frequency range, and diameter is got over by corrugated horn completely to figure and echo-signal
It is big then gain is bigger, on the contrary the smaller then feed of horn diameter is also just smaller in the gain of low-frequency range；And E-band signals of high frequency
It is then radiated completely by intermediate dielectric rod, the size of corrugated horn has little influence on E-band radiation characteristics, therefore E-band
The radiative echo of signal and the characteristic of directional diagram are nearly all determined by the physical dimension of intermediate dielectric rod.Therefore the feed structure
In, low frequency radiation characteristic can be adjusted by adjusting the size of corrugated horn, without influencing E-band radiation characteristics；And adjust medium
The size at the tip of stick, it is possible to adjust the characteristic of E-band antenna patterns, and hardly change low frequency radiation directional diagram
Characteristic, therefore be easy to so that the antenna pattern lobe width of two frequency ranges is almost consistent with gain.Due to
Insulation dielectric stick 25 and corrugated horn 11 are coaxial, therefore the phase center for being easily controlled height frequency range overlaps.The structure
Feed can cause the signal phase center of two frequency ranges of E-band signals and low frequency signal to overlap, the lobe of antenna pattern
Width and gain are more consistent.
Fig. 8, Fig. 9 respectively illustrate the feed antenna pattern of low frequency signal, high-frequency signal.It can be seen from the figure that
Low-band gain is 13.6dBi, and 3dB lobe widths are about 37 degree, and secondary lobe is less than 25dBc；It is 14.3dBi in high-band gain,
3dB lobe widths are about 35.8 degree, and secondary lobe is less than 30dBc.The gain of the feed antenna pattern of height frequency range and lobe width
Difference is little, therefore is not in apparent defocusing when being irradiated to same subreflector, can take into account simultaneously low frequency and
Two frequency ranges of E--band so that two wave bands obtain good antenna pattern performance simultaneously.
In summary, the utility model feed system realizes E frequency ranges or higher frequency range and relatively low common microwave point pair
Point communications band（Such as the wave bands such as Ku, Ka, S, C, X）The purpose of the same antenna is shared, it is practical to solve such dual-band antenna
The key issue faced, has broad application prospects.
Claims (6)
1. a kind of dual-band antenna feed system, the dual-frequency channel merger including being used to synthesize high band and low-band signal, Yi Jiyong
In the Double frequency feed source of radiation high and low frequency segment signal；It is characterized in that, the high band is E wave bands or higher frequency range；The double frequency
Combiner includes common waveguide, balanced type orthomode coupler, high band input circular waveguide；The common waveguide be with it is described low
The circular waveguide of frequency band adapted, its one end input circular waveguide with the high band by conical excessively waveguide and are connected；It is described flat
Weighing apparatus formula orthomode coupler is used to distinguish the low-band signal of horizontal polarization directions and the low-band signal of vertical polarization directions
Two-way is divided into, and tetra- road signals of Jiang Zhe are respectively fed into public ripple by four ports facing each other on common waveguide side wall
It leads, two orthogonal, opposite ports of axis and two lines of two lines between two groups of opposite ports Jing Guo common waveguide
The two paths of signals of the same polarization direction of feed-in；The Double frequency feed source includes the corrugated horn being adapted to the low-frequency range, the ripple
Loudspeaker and the other end of common waveguide connect；A both ends coaxial with common waveguide are provided in the cavity of the common waveguide
In the coniform insulation dielectric stick gradually to come to a point, one end interference fit ground of the insulation dielectric stick is inserted into the high band
Circular waveguide is inputted, the axis of the other end along the corrugated horn of the insulation dielectric stick extends out to the loudspeaker of corrugated horn
Outside mouthful.
2. dual-band antenna feed system as described in claim 1, which is characterized in that the dielectric constant of the insulation dielectric stick is
3.0~4.5.
3. dual-band antenna feed system as described in claim 1, which is characterized in that the corrugated horn has at least twice depth
For the quarter-wave ripple of low-band signal.
4. dual-band antenna feed system as described in claim 1, which is characterized in that the balanced type orthomode coupler leads to respectively
The T-shaped section in rectangular waveguide H face direction is crossed by the low-band signal of horizontal polarization directions and the low-frequency range of vertical polarization directions
Signal is divided into two-way respectively.
5. dual-band antenna feed system as claimed in claim 4, which is characterized in that the two of the vertical rectangular waveguide of the T-shaped section
Side wall is recessed respectively inwards with horizontal rectangular waveguide junction.
6. a kind of dual-band antenna, including the feed system as described in any one of Claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721478033.2U CN207426162U (en) | 2017-11-08 | 2017-11-08 | A kind of dual-band antenna feed system and dual-band antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721478033.2U CN207426162U (en) | 2017-11-08 | 2017-11-08 | A kind of dual-band antenna feed system and dual-band antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207426162U true CN207426162U (en) | 2018-05-29 |
Family
ID=62308024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721478033.2U Active CN207426162U (en) | 2017-11-08 | 2017-11-08 | A kind of dual-band antenna feed system and dual-band antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207426162U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910650A (en) * | 2017-11-08 | 2018-04-13 | 江苏贝孚德通讯科技股份有限公司 | A kind of dual-band antenna feed system and dual-band antenna |
| CN112421226A (en) * | 2020-11-11 | 2021-02-26 | 中国电子科技集团公司第二十九研究所 | Dual-frequency dual-polarization high-power antenna |
-
2017
- 2017-11-08 CN CN201721478033.2U patent/CN207426162U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910650A (en) * | 2017-11-08 | 2018-04-13 | 江苏贝孚德通讯科技股份有限公司 | A kind of dual-band antenna feed system and dual-band antenna |
| CN112421226A (en) * | 2020-11-11 | 2021-02-26 | 中国电子科技集团公司第二十九研究所 | Dual-frequency dual-polarization high-power antenna |
| CN112421226B (en) * | 2020-11-11 | 2022-10-21 | 中国电子科技集团公司第二十九研究所 | Dual-frequency dual-polarization high-power antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107910650A (en) | A kind of dual-band antenna feed system and dual-band antenna | |
| CN104979638B (en) | Dual-band and dual-polarization millimeter wave feed | |
| CN103151620B (en) | High power microwave radial line slit array antenna | |
| CN104112903B (en) | A kind of microstrip antenna applying parasitic feed metal post | |
| CN109638477A (en) | A kind of broadband low minor lobe circular polarised array antenna on the super surface of load | |
| CN109755750A (en) | A kind of bipolar feed source that broadband adds ridge ortho mode transducer to feed | |
| CN102763269A (en) | Phase shifter using substrate integrated waveguide | |
| CN110289483B (en) | Double-frequency double-circular polarization navigation measurement and control antenna feed source | |
| CN207426162U (en) | A kind of dual-band antenna feed system and dual-band antenna | |
| CN106410355A (en) | L-band four-ridge ortho-mode transducer | |
| CN106207439A (en) | A kind of dual circularly polarized antenna unit and array antenna | |
| CN103474755B (en) | A kind of dual-polarization broadband antenna oscillator unit and wide frequency antenna | |
| CN113922075A (en) | Slow wave substrate integrated waveguide duplex antenna based on high-order mode | |
| CN107248619B (en) | A kind of list groove depth C/Ku two-band differential mode tracking feed and its design method | |
| CN206422210U (en) | A kind of high-isolation multichannel radial direction power divider/synthesizer | |
| CN114188688B (en) | Miniaturized coaxial waveguide orthogonal mode coupler | |
| CN110247668B (en) | Ka/EHF broadband transceiving shared feed source network | |
| CN112615162B (en) | Common-caliber three-frequency multi-mode horn antenna | |
| CN101626113B (en) | Double-circle polarization and difference beam broadband corrugation horn feed antenna | |
| CN209217203U (en) | A kind of millimeter wave dual-polarized patch antenna | |
| CN102509838B (en) | Wideband working waveguide traveling wave power synthesis amplifier | |
| CN108123200A (en) | A kind of multifrequency feed network based on coaxial turnsile coupler | |
| CN110048204A (en) | Rectangular waveguide radial combiner | |
| CN205029020U (en) | Dual -frenquency double polarization millimeter wave feed | |
| CN204156089U (en) | A kind of maritime satellite communications terminal broad beam antenna device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |