CN110021816A - Broadband double-circle polarization micro-strip turns waveguide feed antenna system - Google Patents
Broadband double-circle polarization micro-strip turns waveguide feed antenna system Download PDFInfo
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- CN110021816A CN110021816A CN201910202092.4A CN201910202092A CN110021816A CN 110021816 A CN110021816 A CN 110021816A CN 201910202092 A CN201910202092 A CN 201910202092A CN 110021816 A CN110021816 A CN 110021816A
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- 238000010168 coupling process Methods 0.000 claims description 7
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- 239000010410 layer Substances 0.000 description 24
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- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
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- 238000003384 imaging method Methods 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
- H01P1/163—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion specifically adapted for selection or promotion of the TE01 circular-electric mode
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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
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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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
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/04—Multimode antennas
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Abstract
The invention discloses a kind of antenna systems, comprising: electric bridge, upper layer metal, top substrate layer, underlying substrate, lower metal, radiation patch, mode converter, circular waveguide, metallic vias；The antenna system is Multilayer Structure, with being followed successively by upper layer metal from top to bottom, top substrate layer, underlying substrate, lower metal；The radiation patch is located on the upside of the top substrate layer, and the mode converter is placed in the top of the radiation patch and is connected to the circular waveguide above it；The electric bridge constitutes feeding network, and two ports of the electric bridge are between the top substrate layer and the underlying substrate.Broadband, double-circle polarization can be realized in millimeter wave frequency band using feed antenna system of the invention, guarantee that transmitting-receiving port has good isolation, the mode conversion that microstrip antenna turns circular waveguide is realized simultaneously, structure is simple and efficient, and circular polarisation performance is not changed, the feed that can be used as multiple types antenna uses.
Description
Technical field
The present invention relates to antenna technical field, in particular to a kind of broadband double-circle polarization 77GHz micro-strip turns waveguide feed
Antenna system.
Background technique
In the prior art, millimetre-wave radar technology is in car radar, safety check imaging, scene police radar, oil tank gauging etc.
Field has been widely used.The main advantage of millimetre-wave radar technology has: having very high tracking accuracy and spatial discrimination
Rate；With very high DOPPLER RESOLUTION and rate accuracy；With very strong target identification ability and imaging capability；With good
Anti-interference ability.
The Radar Technology of early stage based on pulse radar technology, but pulse radar technology have the shortcomings that it is obvious: for example
Transmission power requires very big, transmitting-receiving need switching, have detection blind area, is bulky, being easy to be trapped etc..And continuous wave
(Continuous Wave, abbreviation CW) radar overcomes these disadvantages, simple with structure, that size is small, power is low etc. is excellent
Point, thus have been more and more widely used.Continuous wave radar can there are many modulation systems, wherein with CW with frequency modulation
(frequency modulation Continuous Wave, abbreviation FMCW) radar is most widely used.Relative to pulse
Radar system, frequency modulated continuous wave radar since there is no blind range zone, receiving sensitivity height, strong antijamming capability, high resolution,
The features such as power requirement is small, structure is simple and be increasingly taken seriously.However there are still many for the development of the technology of continuous wave radar
Challenge, firstly, since frequency modulated continuous wave radar needs the end send-receive (TX/RX) to work at the same time, to keep send-receive
(TX/RX) it is not interfere with each other between port to obtain good working performance, to the transmitting-receiving between the port send-receive (TX/RX)
Interport isolation has higher requirement, so that the design for rear end millimetric wave device adds difficulty；Secondly, CW with frequency modulation thunder
The resolution ratio reached is determined by the bandwidth of radar antenna, in order to guarantee receiving port sensitivity with higher and resolution ratio, is received
Antenna needs as far as possible using broad-band antenna, so that the design of transceiver antenna brings challenge.
In the practical application of millimetre-wave radar, such as oil tank gauging system, the requirement to antenna be with high-gain and
Lesser field angle (3 °) so can be improved link gain, increase range and reduce interference.In such application scenarios, thoroughly
Mirror antenna, electromagnetic horn, reflector antenna etc., which become, more preferably to be selected, because in 77GHz frequency range, the size of above-mentioned these antenna
It is usually all smaller, actual processing and application can be carried out.The radio frequency chip of the millimetre-wave radar system core is mostly monolithic at present
Microwave integrated circuit (Monolithic Microwave Integrated Circuit, abbreviation MMIC), packing forms are with ball
Based on shape pin grid array (Ball Grid Array, abbreviation BGA) encapsulation.As it can be seen that the radio frequency system of radar can be divided into
Using MMIC, feeder line, antenna as the feed system of core and using lens/loudspeaker as the focusing system of core.The transmitting-of radio frequency chip
It receives feeder line after the port (TX/RX) and Antenna Design is most important, how overriding challenge is by 77GHz frequency band signals
Traditional waveguiding structure or other stereochemical structures are converted to from planar transmission cable architecture, further motivate lens or loudspeaker, from
And it realizes high-gain and radiates；Secondly, the electromagnetic wavelength of 77GHz only has 3.9mm, either printed circuit board (Printed
Circuit Board, abbreviation PCB) technique or numerical control (Computer Numerical Control, abbreviation CNC) technique,
Machining accuracy has a great impact to the design of antenna, how to design the antenna of high robust to adapt to corresponding machining accuracy,
It is another key point.In CW with frequency modulation (FMCW) radar system of millimeter wave frequency band, what Antenna Design mainly faced
Challenge includes: bandwidth of operation；Send-receive end isolation；Planar transmission cable architecture is to the conversion of transmitting/reception structure；Robust
Property design.
Referring to shown in Figure 1A-Fig. 1 D, in the prior art, in order to realize transceiver insulation, antenna feeding network system is usual
The scheme of use has: 3dB bridge solution as shown in Figure 1A；Circulator scheme as shown in Figure 1B；Coupling as shown in Figure 1 C
Device scheme；Two-antenna scheme as shown in figure iD.
However, inventor it has been investigated that, in circulator scheme, under 77GHz frequency range, Ferrite Material characteristic can be sent out
Raw great change, thus it is relatively difficult using PCB technology realization.In two-antenna scheme, receives and transmitting uses an antenna respectively；
In theory, if two antennas from it is enough remote, isolation can be accomplished very well；But come as product design
It says, 2 antennas certainly will need double space；Especially in the Radar Design of 77GHz, in order to realize it is farther communication away from
From the size of antenna is all larger, and 2 antennas certainly will will occupy larger space, keeps product structure more too fat to move.Therefore, existing skill
Circulator or double antenna form are used in order to realize transceiver insulation in art, wherein circulator will lead to the gain loss of antenna,
And dual-antenna system can increase antenna size, and since its directive property problem can equally bring the gain loss of antenna.
For CW with frequency modulation (FMCW) radar since receiving end and transmitting terminal work at the same time, antenna mostly uses linear polarization day
Line causes transmitting-receiving interport isolation poor and influences antenna performance.To solve this problem, the mode of addition circulator can be used
Improve transmitting-receiving interport isolation, but circulator can bring additional decaying to reduce the sensitivity of antenna；Alternatively, transmitting-receiving
Different antennas is respectively adopted in end, but this mode will increase equipment volume again, and can reduce because of directive property problem
Antenna gain.
Shown in Figure 2, in the prior art, micro-strip turns waveguide frequently with the scheme of square circle conversion, and circular waveguide is due to right
There is polarization degeneracy phenomenon in title property, can excite various modes, and can be easier to excite due to the discontinuity of circular waveguide
Higher mode；And since the main mould TE10 mould of rectangular waveguide and the main mould TE11 mould of circular waveguide are extremely similar, pass through square shown in Fig. 2
The generation that mode converts and reduces higher mode can be well realized in circle transformational structure, therefore has preferable working performance；
But this kind of scheme shown in Fig. 2 destroys circular symmetry and can not generate circularly polarised wave.It is shown in Figure 3, in the prior art
In, also frequently by microstrip probe energisation mode, the depth for adjusting short-circuit plunger carries out impedance matching, makes to be coupled to circular waveguide
In energy reach maximum；But need to add short-circuit plunger in the scheme in Fig. 3, give it under 77GHz millimeter wave frequency band
Fabrication design brings certain difficulty, and since it is directly from microstrip transitions to circular waveguide, is easy to generate higher mode, and its
Bandwidth of operation is also unable to reach the design requirement of system.
In the prior art, microstrip antenna generallys use the mode of single layer patch directly excitation, and such mode designs, processes letter
It is single, but bandwidth of operation is relatively narrow, usually less than 5%, and cause robustness not high due to narrower bandwidth, vulnerable to machining accuracy
It restricts, can not achieve broadband design.
Summary of the invention
Based on this, for solve in the prior art the technical issues of, spy proposes a kind of antenna system.
The antenna system include electric bridge, upper layer metal, top substrate layer, underlying substrate, lower metal, radiation patch
Piece, mode converter, circular waveguide；The antenna system has Multilayer Structure, with being followed successively by upper layer metal from top to bottom, upper layer
Substrate, underlying substrate, lower metal；The radiation patch is located on the upside of the top substrate layer, and the mode converter is placed in
The top of the radiation patch and it is connected to the circular waveguide above it；Two ports of the electric bridge are located at the upper layer
Between substrate and the underlying substrate.
In one embodiment, the mode converter is round table-like waveguide, and the mode converter is completed microstrip line and arrived
The mode transition of round table-like waveguide and most Zhongdao circular waveguide realizes TM01 mode to TE11 mould under the excitation of the radiation patch
The gradual change of formula.
In one embodiment, wherein be to the upper layer metal internal diameter side that is cyclic annular and being located at the mode converter
At；The antenna system has multiple metallic vias, and the metallic vias position is arranged in a ring, is centered around the upper layer metal
At the outer on ground, top substrate layer described in metallic vias break-through from top to bottom and the underlying substrate.
In one embodiment, the electric bridge constitutes feeding network, and the electric bridge has first port, second port, the
Three ports, the 4th port；The first port, second port are respectively receiving port or emission port；The third port and
4th port between the top substrate layer and the underlying substrate, the radiation patch lower section and with the spoke
It penetrates between patch and is separated by the top substrate layer.
In one embodiment, the electric bridge is 3dB electric bridge；By the first port or second port input signal, lead to
Crossing the 3dB electric bridge, that the both-end that amplitude is equal and phase difference is 90 degree is generated at the third port, the 4th port is sharp
Signal is encouraged, to generate circularly polarised wave；The third port and the 4th port pass through coupling feed way to the radiation
Patch is fed.
In one embodiment, the antenna system is applied in frequency modulated continuous wave radar；
In one embodiment, the working frequency of the antenna system is 77GHz；
It in one embodiment, can be using the antenna system as lens antenna or the feed of electromagnetic horn.
Implement the embodiment of the present invention, will have the following beneficial effects:
The present invention uses coupling feed way, generates that amplitude is equal and 90 degree of phase phase difference of both-end by electric bridge feeding network
Message number while excitation radiation patch are to generate circularly polarised wave, and utilize the characteristic of circularly polarised wave reflection echo polarization reversal
It realizes the polarization isolation of sending and receiving end, guarantees the isolation of transmitting-receiving port.Antenna system of the invention further include a kind of structure it is simple,
Functional, high conversion efficiency round table-like mode converter realizes microstrip line to round table-like waveguide, the most waveguide of Zhongdao standard round
Mode transition, under the incentive action of wideband microstrip antenna, by addition mode converter realize microstrip antenna by TM01
Mode reduces coupling of the waveguide to microstrip antenna to the gradual change of TE11 mode, while reducing the generation of higher mode, therefore day
The bandwidth of linear system system is directly determined by the excitation of double-circle polarization microstrip antenna, reduces the coupled interference of traditional circular waveguide.
Broadband proposed by the present invention, double-circle polarization, microstrip transitions to circular waveguide feed antenna system, receive and dispatch end signal
Double rotational directions can guarantee that antenna system transmitting-receiving port keeps higher isolation, while antenna system using a kind of structure very
To the gradual transition transformational structure of waveguide, the feed as lens antenna or electromagnetic horn can be improved simple microstrip transitions
The gain of antenna and the sensitivity of receiver.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Wherein:
Figure 1A is the schematic diagram for the antenna feeding network system realized in the prior art using 3dB electric bridge.
Figure 1B is the schematic diagram for realizing antenna feeding network system using circulator in the prior art.
Fig. 1 C is the schematic diagram for realizing antenna feeding network system using coupler in the prior art.
Fig. 1 D is the schematic diagram for realizing antenna feeding network system using double antenna in the prior art.
Fig. 2 is the circle transformational structure schematic diagram of square in the prior art；
Fig. 3 A is that the micro-strip of microstrip probe excitation in the prior art turns waveguiding structure main view；
Fig. 3 B is that the micro-strip of microstrip probe excitation in the prior art turns waveguiding structure left view；
Fig. 4 is the three-dimensional view of antenna system in the present invention；
Fig. 5 is the side view of antenna system in the present invention；
Fig. 6 is the top view of antenna system in the present invention；
Including, antenna system 1, electric bridge 2, upper layer metal 3, top substrate layer 4, underlying substrate 5, lower metal 6,
Radiation patch 7, mode converter 8, circular waveguide 9, metallic vias 10, first port 21, second port 22, third port 23,
Four ports 24.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The feedback for turning waveguide with high-isolation, broadband, micro-strip that the invention discloses a kind of work under 77GHz frequency range
Source antenna system.
Referring to fig. 4, shown in 5, the antenna system 1 include electric bridge 2, upper layer metal 3, top substrate layer 4, underlying substrate 5,
Lower metal ground 6, radiation patch 7, mode converter 8, circular waveguide 9, metallic vias 10；
The side view of antenna system 1 shown in Figure 5, the antenna system 1 are Multilayer Structure, from top to bottom successively
For upper layer metal 3, top substrate layer 4, underlying substrate 5, lower metal 6；The radiation patch 7 is located at the top substrate layer 4
Upside, the mode converter 8 are placed in 7 top of radiation patch and are connected to the circular waveguide 9 above it；Wherein,
The mode converter 8 is round table-like waveguide, is converted for realizing the gradual change of TM01 mode to TE11 mode；
It wherein, 3 is the upper layer metal cyclic annular and be located at the internal diameter edge of the mode converter 8；The antenna
System 1 has multiple metallic vias 10, and the metallic vias position 10 is arranged in a ring, with being centered around the upper layer metal 3 it is outer
At, top substrate layer 4 and the underlying substrate 5 described in the break-through from top to bottom of metallic vias 10.The metallic vias 10 is used
In the generation of reduction surface wave, and there is no metallic vias 10 so that it is guaranteed that not producing at the feeding microstrip line of 2 feeding network of electric bridge
Raw interference.
Referring to fig. 4 shown in -6, the electric bridge 2 constitutes feeding network, and the electric bridge 2 has first port 21, second port
22, third port 23, the 4th port 24；Wherein, the first port 21, second port 22 are respectively receiving port or transmitting terminal
Mouthful, i.e., when the first port 21 is receiving port, the second port 22 is emission port, or works as the second port
22 first ports 21 when being receiving port are emission port；The third port 23 and the 4th port 24 are located at described
Between top substrate layer 4 and the underlying substrate 5, the radiation patch 7 lower section and be separated by institute between the radiation patch 7
State top substrate layer 4；
Wherein, the electric bridge 2 is 3dB electric bridge；By 22 input signal of the first port 21 or second port, by described
3dB electric bridge, which generates the both-end excitation that amplitude is equal and phase difference is 90 degree in the third port 23, the 4th port 24, to be believed
Number, to generate circularly polarised wave；It is separated by between the third port 23 and the 4th port 24 and the radiation patch 7 described
Top substrate layer 4 feeds the radiation patch 7 by coupling feed way；
3dB electric bridge is also referred to as same frequency combiner, can carry out along a determining direction of transmission line to transimission power
The input signal of electric bridge input port is divided into two constant amplitudes and has signal and the output of 90 degree of phase differences by continuous sampling；3dB
The utilization rate of output signal can be improved for multi signal combining for electric bridge；
Antenna system 1 in the present invention uses multiple sliding cover, the transmission network being made of coupling feed way electric bridge 2
Network feeds radiation patch 7, realizes impedance matching, the work belt of the antenna system 1 using impedance match technique appropriate
Width can promote 50%-70% compared with single layer feeding classification, not only increase system bandwidth of operation, also improve the robustness of system.
The antenna system 1 is applied in frequency modulated continuous wave radar, the antenna system 1 is dual circularly polarized antenna, thunder
Rotation direction can be changed when reflecting up to the circularly polarised wave launched, utilize polarization isolation existing for circular polarized antenna left-right rotary
To guarantee to receive and dispatch the isolation of port.The generation that surface wave is reduced by addition metallic vias 10 is tied by emulating this visible kind
Structure improves the beamwidth of antenna, so that the beamwidth of antenna has reached 16%.
Mode converter 8 in the present invention is that a kind of structure is simple, micro-strip of high conversion efficiency turns the transition structure of waveguide,
Realize the conversion of microstrip line to circular waveguide 9.Due to the limitation of working frequency, many conversion regimes in the prior art exist
It cannot be used under 77GHz frequency range, such as common micro-strip turns moment round transition mode used by waveguide, because of rectangular waveguide
TE10 mould and circular waveguide TE11 mode are very close, and the structure of rectangular waveguide is but also with enough bandwidth, can be to avoid high order
The generation of mould.But in technical solution of the present invention, Rectangular Waveguide Structure cannot be used due to needing to carry out circular polarisation transmission,
Higher modes can have been motivated again using the direct transition of circular waveguide, and the close coupling effect of circular waveguide can be to the performance of radiation patch
Parameter has an impact, and reduces bandwidth of operation.Therefore, efficient, simple mode converter is most important, technical solution of the present invention
It realizes that micro-strip is converted by the gradual change of TM01 mode to TE11 mode by addition mode converter 8, directly turns with common circular waveguide
Change and be obviously improved compared to its bandwidth, the interference to radiation patch 7 can be reduced to the maximum extent.
The directional diagram that micro-strip is radiate from circular waveguide can slightly deteriorate, and being on the one hand that antenna port return loss is poor leads
It causes, is on the other hand that changeover portion still has certain higher order mode generation and generates adverse effect to directional diagram, passes through increase
The height or lengthening circular waveguide length of mode converter (rotary table waveguide) make higher mode decay or use in transmission process
In the part of mode converter (rotary table waveguide), addition ripple struction can effectively reduce influence of the higher mode to directional diagram.
In view of processing factors, technical solution of the present invention accelerates high order using circular waveguide 9 and mode converter 8 is extended
The decaying of mode is had with gradeization by the visible extension rear direction figure symmetry of waveguide extension front-rear direction figure comparing result and is changed
It is kind, it is also promoted from side reflection shaft than performance, by the whole axis of antenna system 1 3dB axis ratio band more visible than simulation result
It is wide to have reached 10%, it is functional.
Implement the embodiment of the present invention, will have the following beneficial effects:
The invention discloses a kind of feed antenna systems of 77GHz double-circle polarization microstrip transitions to circular waveguide, emulate axis
It is 10% than three dB bandwidth, has reached the requirement of broadband circular polarisation, there is better robustness, have compared to linear polarized antenna
Better anti-interference ability.The characteristics of changing rotation direction using circular polarisation echo has inborn polarization isolation advantage, ensure that
Receive and dispatch the isolation of port.Antenna system has that structure is simple, mode converter of high conversion efficiency simultaneously, and micro-strip may be implemented
To the conversion of waveguide, reduce the interference of higher mode, ensure that the broadband requirement of antenna system, antenna system integrally has good
Good radiance, is widely used, and the feed that can be used as a variety of antennas such as lens antenna, electromagnetic horn uses, and effectively improves
The gain of antenna and the sensitivity of receiver.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, can't be such that the essence of corresponding technical solution departs from the spirit and scope of the technical scheme of various embodiments of the present invention.
Claims (7)
1. a kind of antenna system, which is characterized in that
The antenna system include electric bridge, upper layer metal, top substrate layer, underlying substrate, lower metal, radiation patch, mould
Formula converter, circular waveguide；The antenna system have Multilayer Structure, with being followed successively by upper layer metal from top to bottom, top substrate layer,
Underlying substrate, lower metal；The radiation patch is located on the upside of the top substrate layer, and the mode converter is placed in the spoke
It penetrates the top of patch and is connected to the circular waveguide above it；Two ports of the electric bridge be located at the top substrate layer with
Between the underlying substrate.
2. antenna system according to claim 1, which is characterized in that
Wherein, the mode converter is round table-like waveguide, and the mode converter completes microstrip line to round table-like waveguide and most
The mode transition of Zhongdao circular waveguide realizes the gradual change of TM01 mode to TE11 mode under the excitation of the radiation patch.
3. antenna system according to claim 2, which is characterized in that
It wherein, is to the upper layer metal internal diameter edge that is cyclic annular and being located at the mode converter；The antenna system tool
There are multiple metallic vias, the metallic vias position is arranged in a ring, is centered around at the outer on the upper layer metal ground, the metal
Top substrate layer described in via hole break-through from top to bottom and the underlying substrate.
4. antenna system according to claim 1, which is characterized in that
Wherein, the electric bridge constitutes feeding network, and the electric bridge has first port, second port, third port, the 4th end
Mouthful；The first port, second port are respectively receiving port or emission port；The third port and the 4th port position
Between the top substrate layer and the underlying substrate, the radiation patch lower section and be separated by between the radiation patch
The top substrate layer.
5. antenna system according to claim 4, which is characterized in that
Wherein, the electric bridge is 3dB electric bridge；By the first port or second port input signal, existed by the 3dB electric bridge
The both-end pumping signal that amplitude is equal and phase difference is 90 degree is generated at the third port, the 4th port, to generate
Circularly polarised wave；The third port and the 4th port feed the radiation patch by coupling feed way.
6. antenna system according to claim 1-5, which is characterized in that
The antenna system is applied in frequency modulated continuous wave radar.
7. any one of -6 antenna system according to claim 1, which is characterized in that
The working frequency of the antenna system is 77GHz.
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| CN201910202092.4A CN110021816A (en) | 2019-03-18 | 2019-03-18 | Broadband double-circle polarization micro-strip turns waveguide feed antenna system |
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| CN201910202092.4A CN110021816A (en) | 2019-03-18 | 2019-03-18 | Broadband double-circle polarization micro-strip turns waveguide feed antenna system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111834743A (en) * | 2020-06-19 | 2020-10-27 | 北京微度芯智科技有限责任公司 | Level meter antenna radio frequency board, antenna structure and antenna system |
| CN112540238A (en) * | 2020-12-18 | 2021-03-23 | 北京航空航天大学 | Multi-frequency shared high-efficiency compact range feed source system |
| CN114171872A (en) * | 2021-11-26 | 2022-03-11 | 南京理工大学 | Broadband miniaturized millimeter wave double-channel cross bridge |
| CN114400442A (en) * | 2022-03-25 | 2022-04-26 | 成都天锐星通科技有限公司 | Dual circularly polarized antenna unit and dual circularly polarized array antenna |
| CN115993581A (en) * | 2023-02-28 | 2023-04-21 | 成都雷电微力科技股份有限公司 | Multi-frequency multi-polarization millimeter wave phased array radar receiving front end |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111834743A (en) * | 2020-06-19 | 2020-10-27 | 北京微度芯智科技有限责任公司 | Level meter antenna radio frequency board, antenna structure and antenna system |
| CN111834743B (en) * | 2020-06-19 | 2021-04-06 | 北京微度芯智科技有限责任公司 | Level meter antenna radio frequency board, antenna structure and antenna system |
| CN112540238A (en) * | 2020-12-18 | 2021-03-23 | 北京航空航天大学 | Multi-frequency shared high-efficiency compact range feed source system |
| CN114171872A (en) * | 2021-11-26 | 2022-03-11 | 南京理工大学 | Broadband miniaturized millimeter wave double-channel cross bridge |
| CN114400442A (en) * | 2022-03-25 | 2022-04-26 | 成都天锐星通科技有限公司 | Dual circularly polarized antenna unit and dual circularly polarized array antenna |
| CN114400442B (en) * | 2022-03-25 | 2022-05-31 | 成都天锐星通科技有限公司 | Dual circularly polarized antenna unit and dual circularly polarized array antenna |
| CN115993581A (en) * | 2023-02-28 | 2023-04-21 | 成都雷电微力科技股份有限公司 | Multi-frequency multi-polarization millimeter wave phased array radar receiving front end |
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