CN110048240A - A kind of high stop band degree of suppression low radar scattering cross section product transmissive arrays antenna - Google Patents
A kind of high stop band degree of suppression low radar scattering cross section product transmissive arrays antenna Download PDFInfo
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- CN110048240A CN110048240A CN201910328748.7A CN201910328748A CN110048240A CN 110048240 A CN110048240 A CN 110048240A CN 201910328748 A CN201910328748 A CN 201910328748A CN 110048240 A CN110048240 A CN 110048240A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
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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
- H01Q19/06—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 refracting or diffracting devices, e.g. lens
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of high stop band degree of suppression low radar scattering cross section product transmissive arrays antennas, the invention belongs to wireless communication techniques, Radar Technology field, and in particular to the enhancing of transmissive arrays antenna is to technologies such as out-of-band interference signal rejection ability, reducing radar scattering cross section products (RCS).The transmissive arrays antenna of the low RCS of high stop band degree of suppression proposed by the invention is fed using electromagnetic horn, its high stop band transmission units, high frequency band resistance frequency-selective surfaces are integrated with dual polarization band logical resistive frequency selection surface, and by adjusting unit relevant parameter, realize the independent control to transmissison characteristic, RCS reduced character.Beneficial effect of the present invention has: 1. propose the low RCS transmission array antenna cellular construction of high stop band degree of suppression；2. being obviously improved antenna to the rejection ability of out-of-band interference signal；3. realizing RCS in the reduction of ultra wide band using low frequency and high frequency different structure as the design of dual polarization band logical resistive frequency selection superficial floor.
Description
Technical field
The invention belongs to wireless communication techniques, Radar Technology field, and in particular to the enhancing of transmissive arrays antenna is to outer dry
Disturb the technologies such as signal rejection ability, reducing radar scattering cross section product (RCS).
Background technique
Belt resistance inhibitor system is to measure communication system to the important indicator of interference signal rejection ability.The parameter is higher illustrate be
It unites stronger to the rejection ability of out-of-band interference signal.In most of wireless communication systems, filter is typically directly connect in antenna
Input or output port.Filter and antenna as two larger-size Primary Components, usually independent design, but when
Filter and antenna carry out cascade use, frequently can lead to impedance and lose matching.It is real to need to introduce additional match circuit at this time
Existing impedance matching, and this makes system complex, increases the weight, size and loss of system.In addition, high stop band degree of suppression is filtered
The design of wave device needs to increase the order of filter, can be obviously improved device complexity and volume.Therefore, antenna is increased and is filtered
Function realizes its effective inhibition to out-of-band interference signal, filtering can be significantly reduced on the basis of guaranteeing its radiation characteristic
The design difficulty of device and whole radio circuit.
Radar cross section (Radar Cross Section, be abbreviated as RCS) is the general of most critical in radar stealth technology
It reads, it is a kind of physical quantity for characterizing the scattering intensity of wave that target generates under radar wave irradiation in a direction.Radar is being visited
When surveying target, radar is radiated space a direction by day bundle of lines electromagnetic wave energy, and the object that this side up is shone by electromagnetic wave
When penetrating, according to Maxwell equation and field boundary condition, new electromagnetic field can be all generated around the object and object, this is just
It is the scattered field of target.Radar receives the electromagnetic wave of target scattering, send to receiving device and is handled, and extracts relevant information,
Just it is able to achieve and the functions such as ranging, identification, tracking is carried out to target.The spatial distribution for scattering energy is known as scattering directional diagram.To quilt
It irradiates for object, size, space structure, composition material of different objects etc. will cause different influences to scattering directional diagram.
In addition, the electromagnetic characteristics such as angle, frequency, polarization direction of electromagnetic wave of radar transmitting are also to influence scattering directional diagram to have weight
Want factor.
Transmissive arrays antenna is made of plane transmission battle array and Feed Horn.Transmiting front is by being largely printed on dielectric substrate
On microband paste unit composition planar array.Its working mechanism is: after electromagnetic wave is fed out from loudspeaker, along different biographies
Defeated path reaches each unit, the difference of path-length will lead to each unit received in-field different spaces occurs
Phase delay can carry out appropriate phase compensation to in-field, allow outgoing field in antenna opening by rationally designing each unit
Required same-phase wavefront is formed on diametric plane.Why complicated heavy traditional phased array is, be primarily due to its radiate resonant element with
Phase shifter mutually separates.And it transmits the maximum advantage of array antenna and is that radiation characteristic and Phase-Shifting Characteristics are combined into one by its radiating element
Body.In the design of classical transmissive arrays antenna, the saturating with spa-tial filter properties of Multilayer Frequency-Selective Surfaces design is utilized
It penetrates array antenna and has obtained extensive concern.Under the guidance of filter theory, carried out using the metal patch of specific shape
Inductance capacitance it is equivalent, and by rationally cascading, to form the transmission array element of specific filter effect.However, although such
Transmission units can form the transmission passband with high stop band degree of suppression, but it is presented full incident electromagnetic wave outside working band
Reflective condition so that its Radar Cross Section (RCS) with etc. big metal floor it is suitable.On the other hand, although RCS reduction technology
Extensive concern is obtained in phased array antenna, the RCS reduction technology about transmission array antenna is but rarely reported.Therefore, it mentions
It is a kind of out that there is high stop band degree of suppression, while having both the transmissive arrays antenna of low radar scattering cross section product, it is being communicated to it is promoted
Application with field of radar has great significance.
Summary of the invention
The present invention devises a kind of transmissive arrays antenna with the low RCS of high stop band degree of suppression.Guaranteeing its working band
On the basis of interior radianting capacity, using high stop band degree of suppression transmission array element, dual polarization band logical absorption-type frequency-selective surfaces with
And with resistance frequency-selective surfaces, the high stop band degree of suppression and the low RCS characteristic in ultra wide band range that realize unit.
Technical solution of the present invention be a kind of low RCS of high stop band degree of suppression transmissive arrays antenna, comprising: Feed Horn and thoroughly
Penetrate array antenna, the Feed Horn face transmissive arrays antenna；The transmissive arrays antenna is by multiple independent control unit groups
At each independent control unit includes from top to bottom being arranged: one layer of dual polarization band logical absorption-type frequency selects layer, two layers
Or two layers or more high frequency band resistance frequency selection layer, three layers or three layers or more high stop band degree of suppression transmission layer；
The dual polarization band logical absorption-type frequency selection layer includes: dual polarization band logical absorption-type frequency-selective surfaces micro-strip electricity
Road and dual polarization band logical absorption-type frequency-selective surfaces medium substrate, wherein dual polarization band logical absorption-type frequency-selective surfaces micro-strip
Circuit includes the opposite frequency-selective surfaces circuit of two polarization directions, is respectively arranged at the selection of dual polarization band logical absorption-type frequency
The upper and lower surfaces of surface dielectric substrate；
The high frequency band resistance frequency selection layer includes: high frequency band resistance frequency-selective surfaces metal patch and high frequency band resistance frequency
Surface dielectric substrate is selected, higher frequency band resistance frequency-selective surfaces metal patch is set to high frequency band resistance frequency-selective surfaces and is situated between
The lower surface of matter substrate, the high frequency band resistance frequency-selective surfaces metal patch include 4 junior units, and each junior unit includes one
The square-shaped metal patch of big small two concentric co-axials；
The high stop band degree of suppression transmission layer includes: high stop band degree of suppression transmissive arrays unit metal patch and high stop band suppression
System transmissive arrays unit medium substrate, wherein high stop band degree of suppression transmissive arrays unit metal patch is covered in high stop band inhibition
The upper surface of transmissive arrays unit medium substrate is spent, the high stop band degree of suppression transmissive arrays unit metal patch is etched with 4 groups
Hollow-out parts, every group of hollow-out parts are the square of small one and large one two concentric co-axials.
Further, the high stop band degree of suppression transmissive arrays unit of each independent control unit is golden in the transmissive arrays antenna
Belong to of different sizes, the high stop band degree of suppression transmissive arrays unit metal patch size of the independent control unit of different location of patch
Phase decision is compensated needed for plane wave and spherical wave conversion according to realizing.
Further, the dual polarization band logical absorption-type frequency-selective surfaces microstrip circuit upper surface includes two parallel
Direct-wire circuit, lower surface include two parallel direct-wire circuits, and the direct-wire circuit direction of upper and lower surface is vertical；Upper and lower surface straight line
The center of circuit is parallel line capacitance and folding line inductance in parallel, and respectively connecting a resistance value in its two sides is 150 Europe
Resistance.
Further, the big square-shaped metal of each junior unit is pasted in the high frequency band resistance frequency-selective surfaces metal patch
The side length of piece is 5-6 millimeters, and small square side length is 2-3 millimeters；The high stop band degree of suppression transmissive arrays unit metal patch
The side length of the big square of every group of hollow-out parts is 6-7 millimeters in piece, and small square side length is 3-4 millimeters；
Further, it is three layers that the high frequency band resistance frequency, which selects layer, and higher frequency band hinders frequency-selective surfaces metal patch
6 millimeters of side length of the big square-shaped metal patch of each junior unit in piece, small square side length is 3 millimeters；The high stop band suppression
System transmission layer is four layers, wherein the big square of every group of hollow-out parts in high stop band degree of suppression transmissive arrays unit metal patch
Side length is 7 millimeters, and small square side length is 4 millimeters.
The transmissive arrays antenna element of the low RCS of the high stop band degree of suppression can realize the efficient inhibition to out-of-band interference signal
And effective reduction to RCS in superwide range；By utilizing high stop band degree of suppression transmission units to lower than transmissive arrays
The efficient inhibition of interference signal and high stop band degree of suppression transmission units and high frequency band resistance frequency choosing within the scope of antenna operating band
Surface is selected in high-frequency range to the common inhibition of interference signal, realizes the high stop band rejection characteristic of proposed unit；Load
Dual polarization band logical resistive frequency select surface, in low frequency using high stop band degree of suppression transmission units as floor, in high frequency
Using high frequency band resistance frequency-selective surfaces as floor, realizes the outer low frequency of working band and absorbed jointly with high frequency, to realize
Low RCS characteristic of the transmission array antenna in ultra wide band.
The transmissive arrays antenna of the low RCS of high stop band degree of suppression proposed by the invention is fed using electromagnetic horn,
High stop band transmission units, high frequency band resistance frequency-selective surfaces are integrated with dual polarization band logical resistive frequency selection surface, and lead to
Adjustment unit relevant parameter is crossed, realizes the independent control to transmissison characteristic, RCS reduced character.
Beneficial effect of the present invention has: 1. propose the low RCS transmission array antenna cellular construction of high stop band degree of suppression；2. significantly mentioning
Antenna has been risen to the rejection ability of out-of-band interference signal；3. using low frequency and high frequency different structure as the resistive frequency of dual polarization band logical
Rate selects the design of superficial floor, realizes RCS in the reduction of ultra wide band.
Detailed description of the invention
Fig. 1 is the transmissive arrays cell schematics of the low RCS of high stop band degree of suppression in the present invention；In figure, 101 press down for high stop band
The low RCS of system transmits array antenna unit, and 101-1 is dual polarization band logical absorption-type frequency-selective surfaces microstrip circuit and its medium base
Plate upper surface, 101-2 are that high frequency band hinders frequency-selective surfaces metal patch and its medium substrate upper surface, 101-3 are high stop band
Degree of suppression transmissive arrays unit metal patch and its medium substrate upper surface.
Fig. 2 is that transmissive arrays antenna receives radar illumination schematic diagram in the present invention；In figure, 102-1 is Feed Horn, 102-
2 be transmissive arrays antenna, and 102-3 is incident plane wave schematic diagram.
Fig. 3 is transmission width of the high stop band degree of suppression transmissive arrays unit when being not loaded with any structure in specific implementation example
Spend result, it can be seen that used transmissive arrays unit is band-pass form, in the frequency below and above work centre frequency point
Reflective condition is presented to electromagnetic wave in range；
Fig. 4 is the transmission amplitude that the transmissive arrays unit of the low RCS of high stop band degree of suppression proposed in example is embodied
As a result, it can be seen that the low RCS integration transmissive arrays unit of the high stop band degree of suppression proposed to working band outside electromagnetism it is dry
Disturb fabulous inhibitory effect；
Fig. 5 is the reflection amplitudes that the transmissive arrays unit of the low RCS of high stop band degree of suppression proposed in example is embodied
As a result；In the working band lower than transmission battle array, high stop band degree of suppression transmissive arrays unit is as dual polarization band logical absorption-type frequency
The floor on rate selection surface；In the working band for being higher than transmission battle array, high frequency band hinders frequency-selective surfaces as dual polarization band logical
The floor of absorption-type frequency-selective surfaces has obtained RCS to realize low frequency and high frequency to the efficient absorption of incident electromagnetic wave
Significant decrease.
Fig. 6 is to hinder frequency choosing in load dual polarization band logical absorption-type frequency-selective surfaces and high frequency band in the embodiment of the present invention
Select the radiation characteristic comparing result figure of surface front and back transmissive arrays antenna, it can be seen that transmissive arrays antenna radiation characteristics keep good
Good, gain loss is within 0.5dB.Compared with traditional transmissive arrays antenna, result of the invention realize RCS substantially reduce with
High stop band degree of suppression maintains good radiation characteristic, it was demonstrated that the feasibility and superiority of proposition method of the present invention.
Specific embodiment
With reference to the accompanying drawing and embodiment, technical solution of the present invention is described in detail, but guarantor of the invention
Shield range is not limited to the embodiment.
Fig. 1 is the transmissive arrays unit of the low RCS of high stop band degree of suppression in the embodiment of the present invention, it is saturating by high stop band degree of suppression
Array element is penetrated, dual polarization band logical absorption-type frequency-selective surfaces and high frequency band resistance frequency-selective surfaces are constituted, by closing to it
High-gain, the radiation characteristic of high stop band degree of suppression and the reduction of RCS are realized in reason arrangement；
T in the present embodiment 11With a thickness of 0.25mm, t2With t3With a thickness of 0.5mm；D1=3mm, D2=2mm, D3=1mm,
D4=7mm；Unit entirety size is 18mm × 18mm；The width of metal band is 0.4mm, L in 101-21=4L2；In 101-3
The width of metallic channel is 0.4mm, L3=3L4。
T in the present embodiment 21With a thickness of 0.25mm, t2With t3With a thickness of 0.5mm；D1=3mm, D2=2mm, D3=1mm,
D4=7mm；Unit entirety size is 16mm × 16mm；The width of metal band is 0.3mm, L in 101-21=3L2；In 101-3
The width of metallic channel is 0.3mm, L3=2.5L4。
T in the present embodiment 31With a thickness of 0.5mm, t2With t3With a thickness of 0.5mm；D1=3mm, D2=2mm, D3=1mm, D4
=7mm；Unit entirety size is 14mm × 14mm；The width of metal band is 0.2mm, L in 101-21=3L2；It is golden in 101-3
The width for belonging to slot is 0.2mm, L3=2L4。
Fig. 2 is that transmissive arrays antenna receives radar wave irradiates schematic diagram in the embodiment of the present invention.Conventional belt leads to transmissive arrays
Antenna because its outside working frequency points to electromagnetic wave be totally reflected, therefore can generate with etc. the comparable radar cross section of big metal floor
Product.Receiving radar wave side at it in the present invention is dual polarization band logical absorption-type frequency-selective surfaces, therefore can be had to RCS
Effect reduction.
Fig. 3 is transmission width of the high stop band degree of suppression transmissive arrays unit when being not loaded with any structure in the embodiment of the present invention
Spend result, it can be seen that used transmissive arrays unit is band-pass form, in the frequency below and above work centre frequency point
Reflective condition is presented to electromagnetic wave in range, thus can generate with etc. the comparable Radar Cross Section of big metal floor.
Fig. 4 is the transmission of the low RCS integration transmissive arrays unit of high stop band degree of suppression in 1- of embodiment of the present invention embodiment 3
Amplitude result；It can be seen that it mainly inhibits interference signal by high stop band degree of suppression transmissive arrays unit in low frequency；?
High frequency hinders frequency-selective surfaces collective effect by high stop band degree of suppression transmissive arrays unit and high frequency band, therefore produces very high
Belt resistance inhibitor system.
Fig. 5 (a)-(c) is the low RCS integration transmissive arrays list of high stop band degree of suppression in 1- of embodiment of the present invention embodiment 3
The reflection amplitudes result of member；In the frequency range lower than transmission battle array working frequency, high stop band degree of suppression transmissive arrays unit is made
For the floor of dual polarization band logical absorption-type frequency-selective surfaces, the two collective effect generates absorption in low frequency to incident electromagnetic wave；
In the frequency range for being higher than transmission battle array working frequency, high frequency band hinders frequency-selective surfaces as dual polarization band logical absorption-type frequency
The floor on surface is selected, the two collective effect generates absorption in high frequency to incident electromagnetic wave；It can be seen that in transmissive arrays antenna
Working band outside, structure of the invention produces efficient ultra wide band to incident electromagnetic wave and absorbs.
Fig. 6 is to hinder frequency in load dual polarization band logical absorption-type frequency-selective surfaces and high frequency band in the embodiment of the present invention 1
Select the radiation characteristic comparing result figure of surface front and back transmissive arrays antenna, it can be seen that transmissive arrays antenna radiation characteristics keep good
Good, gain loss is within 0.5dB.With conventional belt is penetrating penetrate array antenna compared with, result of the invention realizes RCS and substantially contracts
Subtract, maintain good radiation characteristic, and belt resistance inhibitor system is further promoted, it was demonstrated that proposition method of the present invention
Feasibility and superiority.
It is the description to the present invention and its embodiment provided to the engineers and technicians in familiar field of the present invention above,
These descriptions should be considered to be illustrative and not restrictive.Engineers and technicians can be accordingly in invention claims
Thought is done specific operation and is implemented, without prejudice to the spirit and scope of the invention as defined in the appended claims, can be right
It makes a variety of changes in the form and details.
Claims (5)
1. the transmissive arrays antenna of the low RCS of high stop band degree of suppression a kind of, comprising: Feed Horn and transmissive arrays antenna, the feedback
Source loudspeaker face transmissive arrays antenna；The transmissive arrays antenna is made of multiple independent control units, each independent control
Unit processed includes from top to bottom being arranged: the high frequency of one layer of dual polarization band logical absorption-type frequency selection layer, two layers or two layers or more
High stop band degree of suppression transmission layer with resistance frequency selection layer, three layers or three layers or more；
Dual polarization band logical absorption-type frequency selection layer include: dual polarization band logical absorption-type frequency-selective surfaces microstrip circuit and
Dual polarization band logical absorption-type frequency-selective surfaces medium substrate, wherein dual polarization band logical absorption-type frequency-selective surfaces microstrip circuit
Including the opposite frequency-selective surfaces circuit of two polarization directions, it is respectively arranged at dual polarization band logical absorption-type frequency-selective surfaces
The upper and lower surfaces of medium substrate；
The high frequency band resistance frequency selection layer includes: high frequency band resistance frequency-selective surfaces metal patch and high frequency band resistance frequency selection
Surface dielectric substrate, higher frequency band resistance frequency-selective surfaces metal patch are set to high frequency band resistance frequency-selective surfaces medium base
The lower surface of plate, the high frequency band resistance frequency-selective surfaces metal patch include 4 junior units, and each junior unit includes one big by one
The square-shaped metal patch of small two concentric co-axials；
The high stop band degree of suppression transmission layer includes: high stop band degree of suppression transmissive arrays unit metal patch and high stop band degree of suppression
Transmissive arrays unit medium substrate, wherein it is saturating to be covered in high stop band degree of suppression for high stop band degree of suppression transmissive arrays unit metal patch
The upper surface of array element medium substrate is penetrated, the high stop band degree of suppression transmissive arrays unit metal patch is etched with 4 groups of hollow outs
Portion, every group of hollow-out parts are the square of small one and large one two concentric co-axials.
2. the transmissive arrays antenna of the low RCS of a kind of high stop band degree of suppression as described in claim 1, it is characterised in that the transmission
Of different sizes, the different location of the high stop band degree of suppression transmissive arrays unit metal patch of each independent control unit in array antenna
Independent control unit high stop band degree of suppression transmissive arrays unit metal patch size according to realizing that plane wave and spherical wave turn
Phase decision is compensated needed for changing.
3. the transmissive arrays antenna of the low RCS of a kind of high stop band degree of suppression as described in claim 1, it is characterised in that described bipolar
Changing band logical absorption-type frequency-selective surfaces microstrip circuit upper surface includes two parallel direct-wire circuits, and lower surface includes two flat
The direct-wire circuit direction of capable direct-wire circuit, upper and lower surface is vertical；The center of upper and lower surface direct-wire circuit is in parallel
Parallel line capacitance and folding line inductance respectively connect the resistance that a resistance value is 150 Europe in its two sides.
4. the transmissive arrays antenna of the low RCS of a kind of high stop band degree of suppression as described in claim 1, it is characterised in that the high frequency
Side length with the big square-shaped metal patch of each junior unit in resistance frequency-selective surfaces metal patch is 5-6 millimeters, small pros
Shape side length is 2-3 millimeters；The big square of every group of hollow-out parts in the high stop band degree of suppression transmissive arrays unit metal patch
Side length be 6-7 millimeter, it is small square side length be 3-4 millimeters.
5. the transmissive arrays antenna of the low RCS of a kind of high stop band degree of suppression as claimed in claim 4, it is characterised in that the high frequency
It is three layers that band resistance frequency, which selects layer, and higher frequency band hinders the big square gold of each junior unit in frequency-selective surfaces metal patch
Belong to 6 millimeters of side length of patch, small square side length is 3 millimeters；The high stop band degree of suppression transmission layer is four layers, wherein high stop band
The side length of the big square of every group of hollow-out parts is 7 millimeters in degree of suppression transmissive arrays unit metal patch, and small square side length is 4
Millimeter.
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| CN201910328748.7A CN110048240B (en) | 2019-04-23 | 2019-04-23 | High-impedance band suppression low-radar scattering sectional area transmission array antenna |
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| CN201910328748.7A CN110048240B (en) | 2019-04-23 | 2019-04-23 | High-impedance band suppression low-radar scattering sectional area transmission array antenna |
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| CN110739548A (en) * | 2019-10-14 | 2020-01-31 | 南京理工大学 | High-gain low-profile transmissive array antenna |
| CN110739548B (en) * | 2019-10-14 | 2021-08-31 | 南京理工大学 | High-gain low-profile transmissive array antenna |
| CN112003012A (en) * | 2020-06-02 | 2020-11-27 | 杭州电子科技大学 | Gain-enhanced low-radar scattering cross section air-feed array antenna |
| CN112234359A (en) * | 2020-09-17 | 2021-01-15 | 南京理工大学 | Reflection/absorption surface for terminating filter circuit to control electrical characteristics and design method |
| CN112234360A (en) * | 2020-09-17 | 2021-01-15 | 南京理工大学 | Dual-polarized transmission surface for controlling electrical characteristics by terminating filter circuit and design method thereof |
| CN112234359B (en) * | 2020-09-17 | 2022-06-24 | 南京理工大学 | Reflection/absorption surface for terminating filter circuit to control electrical characteristics and design method |
| CN112713406A (en) * | 2020-12-21 | 2021-04-27 | 杭州电子科技大学 | Planar integrated millimeter wave filtering horn antenna based on FSS |
| CN112713406B (en) * | 2020-12-21 | 2022-04-29 | 杭州电子科技大学 | Planar integrated millimeter wave filtering horn antenna based on FSS |
| CN113937465A (en) * | 2021-10-25 | 2022-01-14 | 华南理工大学 | Dual-polarized electromagnetic transparent antenna and method for realizing dual-frequency scattering suppression |
| CN113937465B (en) * | 2021-10-25 | 2023-03-21 | 华南理工大学 | Dual-polarized electromagnetic transparent antenna and method for realizing dual-frequency scattering suppression |
| CN115621742A (en) * | 2022-11-30 | 2023-01-17 | 南京邮电大学 | Low radar scattering cross section reflective array antenna based on three-dimensional frequency selection structure |
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