CN207677094U - A kind of frequency scanning phased array antenna - Google Patents
A kind of frequency scanning phased array antenna Download PDFInfo
- Publication number
- CN207677094U CN207677094U CN201721425957.6U CN201721425957U CN207677094U CN 207677094 U CN207677094 U CN 207677094U CN 201721425957 U CN201721425957 U CN 201721425957U CN 207677094 U CN207677094 U CN 207677094U
- Authority
- CN
- China
- Prior art keywords
- radiation assembly
- lower plate
- upper plate
- slow wave
- wave line
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The utility model belongs to phased array antenna technical field, in particular relates to a kind of frequency scanning phased array antenna, including slow wave line component, radiation assembly and two blocks of wing plates；The slow wave line component is fixedly connected with radiation assembly, and the cavity of slow wave line component is connected to the one end open of the guide hole of radiation assembly, and two blocks of wing plates are fixed on radiation assembly, and two blocks of wing plates are located at the both sides of another end opening of the guide hole of radiation assembly；The one end of the cavity of the slow wave line component is equipped with waveguide switch.The antenna of the utility model reduces the mutual coupling effect between the signal given off, have the advantages that transmission loss of signal is small, antenna transmission power is high, investigative range is remote, good operating stability, meets the performance requirement of routine work and the requirement of outdoor environment.
Description
Technical field
The utility model belongs to phased array antenna technical field, in particular relates to a kind of frequency scanning phased array antenna.
Background technology
Antenna system function is radiating to free space by the signal loss as small as possible from radar driving source,
Or loss as small as possible backs into radar receiver when reception space echo-signal.
Phased array antenna mainly has active phase array antenna system and frequency scanning phased array antenna system.Frequency scan day
The slow wave line of line is directly related to loss and the radiation efficiency of antenna.
Currently used is micro-strip slow wave line, but it has the shortcomings that big transmission loss of signal, influence antenna transmission power,
And mutual coupling is serious between the signal of existing waveguide slow wave line antenna given off, and reduces antenna gain, cannot meet daily
The performance requirement of work and the requirement of outdoor environment.
Utility model content
According to problems of the prior art, the utility model provides a kind of frequency scanning phased array antenna, the day
Line reduces the mutual coupling effect between the signal given off, has small transmission loss of signal, antenna transmission power height, investigative range
Far, the advantages of good operating stability, the performance requirement of routine work and the requirement of outdoor environment are met.
The utility model uses following technical scheme：
A kind of frequency scanning phased array antenna, including slow wave line component, radiation assembly and two blocks of wing plates；The slow wave line group
Part is fixedly connected with radiation assembly, and the cavity of slow wave line component is connected to the one end open of the guide hole of radiation assembly, described in two pieces
Wing plate is fixed on radiation assembly, and two blocks of wing plates are located at the both sides of another end opening of the guide hole of radiation assembly；It is described slow
The one end of the cavity of swash component is equipped with waveguide switch.
Preferably, the slow wave line component includes upper plate and lower plate, and upper plate is fixedly connected with lower plate；The bottom surface of the upper plate
With the groove for being equipped with snakelike shape on the corresponding position of the top surface of lower plate, the cavity of the slow wave line component is the bottom surface by upper plate
Groove and the top surface groove of lower plate fasten and the snake shaped inner chamber of formation；The waveguide switch is located at a head end of the cavity
Portion, waveguide switch are respectively fixedly connected with upper plate and lower plate；The bottom surface of the radiation assembly and the top surface of the upper plate are fixed
Connection, two blocks of wing plates are fixed on the top surface of radiation assembly.
It is further preferred that multiple convex blocks, institute are equipped in the top surface groove of the lower plate on the length direction along lower plate
The height for stating convex block is less than the top surface depth of groove of lower plate；The upper plate is equipped with multiple through-holes on position corresponding with convex block,
The cavity of the through-hole connection slow wave line component；The radiation assembly is equipped with guide hole, guide hole on its position corresponding with through-hole
Under shed be connected to through-hole；Two blocks of wing plates are separately fixed at the both sides of the upper opening of guide hole.
Still more preferably, multiple convex blocks, through-hole and guide hole are linearly arranged；The upper opening of all guide holes
Place is equipped with the conduit of the top surface of protrusion radiation assembly, the tube chamber of the conduit and the upper open communication of guide hole；Two pieces of wings
The length direction of plate is formed by straight line each parallel to the center of multiple guide holes, and two blocks of wing plates go out under along by guide hole
It is in open-like shape on mouth to the direction of guide hole upper outlet；Two blocks of wing plates are formed by straight line along the center of multiple guide holes and symmetrically divide
Cloth, and wing plate is laterally away from perforated member side from close perforated member one and tilts upward extension.
Still more preferably, the other end of the cavity of the slow wave line component is equipped with load, the load and upper plate
It is respectively fixedly connected with lower plate.
Still more preferably, it is welded and fixed by vacuum Aluminum brazing between the upper plate and lower plate of the slow wave line component；
Between the radiation assembly and the top surface of the upper plate, between two blocks of wing plates and radiation assembly, waveguide switch respectively with
Between upper plate and lower plate, loads and be fixedly connected respectively by screw between upper plate and lower plate.
Still more preferably, the top surface of the upper plate and the bottom surface of lower plate are equipped with weight loss groove.
Still more preferably, the upper plate, lower plate, radiation assembly and two blocks of wing plates are all made of 3A21 aluminium alloys.
Still more preferably, the upper plate is equipped with multiple fixed blocks in both sides along its length.
The beneficial effects of the utility model are：
1) antenna of the utility model includes slow wave line component, radiation assembly and two blocks of wing plates, wherein the slow wave
Line component includes upper plate and lower plate, and upper plate is fixedly connected with lower plate；The corresponding position of the bottom surface of the upper plate and the top surface of lower plate
On be equipped with the groove of snakelike shape, the bottom surface of upper plate and the top surface of lower plate are fastened and connected, and the cavity of the slow wave line component is served as reasons
The bottom recesses of upper plate and the top surface groove of lower plate fasten and the snake shaped inner chamber of formation.What the antenna in the utility model used
It is waveguide slow wave line, there is small transmission loss of signal, antenna transmission power height, investigative range for micro-strip slow wave line
Far, the advantages of good operating stability, it disclosure satisfy that the requirement of the performance requirement and outdoor environment that are increasingly enhanced.
2) in the antenna of the utility model, multiple convex blocks, through-hole and guide hole are linearly arranged；All guide holes
Upper opening is equipped with the conduit of the top surface of protrusion radiation assembly, the tube chamber of the conduit and the upper open communication of guide hole.It is all
The upper outlet of guide hole is equipped with the conduit of the top surface of protrusion radiation assembly, extends the parallel transmission channels of signal so that by leading
Close to parallel between each signal that hole and conduit radiate, reduce mutual interference, during reducing Antenna Operation
Mutual coupling phenomenon of the signal at upper outlet is transmitted, antenna gain is improved.
3) in the antenna of the utility model, the slow wave line component is divided into the upper plate mutually fastened and lower plate, the upper plate
Bottom surface and lower plate top surface corresponding position on be equipped with the groove of snakelike shape, the cavity of the slow wave line component is by upper plate
Bottom recesses and lower plate top surface groove fasten and the snake shaped inner chamber that is formed；The bottom surface of the radiation assembly and the upper plate
Top surface be equipped with boss, fixed by the limit of inlay card between boss between radiation assembly and upper plate.Slow wave line component it is upper
State structure avoid global formation difficulty of processing is big, disadvantage that performance reliability is poor, can be complete by common Milling Process
At so that machining accuracy is easily controllable.
4) it in the antenna of the utility model, is welded by vacuum Aluminum brazing between the upper plate and lower plate of the slow wave line component
It is fixed；Between the radiation assembly and the top surface of the upper plate, between two blocks of wing plates and radiation assembly, waveguide switch point
Not between upper plate and lower plate, loads and be fixedly connected respectively by screw between upper plate and lower plate.Between upper plate and lower plate
It is welded by vacuum Aluminum brazing, improves the stability of slow wave line component, be also just correspondingly improved the stability of Antenna Operation,
Meanwhile being fixedly connected by screw between other assemblies, when not influencing Antenna Operation stability, improve the assembly and disassembly of antenna just
Victory and mobility.
5) in the body structure of the utility model, the top surface of the upper plate and the bottom surface of lower plate are equipped with strip groove, institute
It states upper plate, lower plate, radiation assembly and two blocks of wing plates and is all made of 3A21 aluminium alloys.The setting of groove and the selection of aluminium, effectively
Ground reduces the weight of this antenna, while improving the preservation antioxidation of antenna itself so that antenna can adapt to complicated
Outdoor environment.
Description of the drawings
Fig. 1 is the exploded perspective figure one of the antenna of the utility model.
Fig. 2 is the exploded perspective figure two of the antenna of the utility model.
Fig. 3 is the upper plate structure chart of the antenna of the utility model.
Fig. 4 is the lower plate structure figure of the antenna of the utility model.
Fig. 5 is the structure chart of the radiation assembly of the antenna of the utility model.
Fig. 6 a are simulation model when being equipped with conduit at the upper outlet of the guide hole of this antenna.
Fig. 6 b are not provided with simulation model when conduit for the upper outlet of the guide hole of traditional antenna.
Fig. 7 a, Fig. 7 b be respectively each frequency point azimuth plane directional diagram of this antenna analogous diagram and simulation result in azimuth plane direction
Figure partial enlarged view.
Fig. 8 a, Fig. 8 b be respectively each frequency point azimuth plane directional diagram of traditional antenna analogous diagram and simulation result in azimuth plane side
To figure partial enlarged view.
Reference numeral：1- slow wave line components, 2- radiation assemblies, 3- wing plates, 4- waveguide switch, 5- loads, 11- upper plates,
12- lower plates, 21- guide holes, 211- conduits, 111- through-holes, 112- fixed blocks, 121- convex blocks.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1 and Figure 2, a kind of frequency scanning phased array antenna, including slow wave line component 1, radiation assembly 2 and two pieces
Wing plate 3；The slow wave line component 1 is fixedly connected with radiation assembly 2, the cavity of slow wave line component 1 and the guide hole 21 of radiation assembly 2
One end open connection, two blocks of wing plates 3 are fixed on radiation assembly 2, and two blocks of wing plates 3 are located at leading for radiation assembly 2
The both sides of another end opening in hole；The one end of the cavity of the slow wave line component 1 is equipped with waveguide switch 4.
As shown in Figure 3, Figure 4, the slow wave line component 1 includes upper plate 11 and lower plate 12, and upper plate 11 and lower plate 12, which are fixed, to be connected
It connects；The groove of snakelike shape, the slow wave line group are equipped on the corresponding position of the bottom surface of the upper plate 11 and the top surface of lower plate 12
The cavity of part 1 is fastens the snake shaped inner chamber formed by the top surface groove of the bottom recesses of upper plate 11 and lower plate 12；The wave
The cephalic par that converter 4 is located at the cavity is led, waveguide switch 4 is respectively fixedly connected with upper plate 11 and lower plate 12；It is described
The bottom surface of radiation assembly 2 is fixedly connected with the top surface of the upper plate 11, and two blocks of wing plates 3 are fixed on the top surface of radiation assembly 2
On.
As shown in figure 5, multiple convex blocks are equipped in the top surface groove of the lower plate 12 on the length direction along lower plate 12
121, the height of the convex block 121 is less than the top surface depth of groove of lower plate 12；The upper plate 11 is in position corresponding with convex block 121
Multiple through-holes 111 are equipped with, the through-hole 111 is connected to the cavity of slow wave line component 1；The radiation assembly 2 is in itself and through-hole 111
Corresponding position is equipped with guide hole 21, and the under shed of guide hole 21 is connected to through-hole 111；Two blocks of wing plates 3 are separately fixed at and lead
The both sides of the upper opening in hole 21.
The linearly arrangement of multiple convex blocks 121, through-hole 111 and guide hole 21；The upper opening of all guide holes 21 is equal
The conduit 211 of top surface equipped with protrusion radiation assembly 2, the tube chamber of the conduit 211 and the upper open communication of guide hole 21；Two pieces of institutes
The length direction for stating wing plate 3 is formed by straight line each parallel to the center of multiple guide holes 21, and two blocks of wing plates 3 are along by leading
Exported under hole 21 on the direction of 21 upper outlet of guide hole is in open-like shape；Two blocks of wing plates 3 are along the center of multiple guide holes 21 institute
The straight line of formation is symmetrical, and wing plate 3 is laterally away from perforated member side from close perforated member one and tilts upward extension.
The other end of the cavity of the slow wave line component 1 is equipped with load 5, and the load 5 divides with upper plate 11 and lower plate 12
It is not fixedly connected.
It is welded and fixed by vacuum Aluminum brazing between the upper plate 11 and lower plate 12 of the slow wave line component 1；The radiation group
Between part 2 and the top surface of the upper plate 11, between two blocks of wing plates 3 and radiation assembly 2, waveguide switch 4 respectively with upper plate
Between 11 and lower plate 12, load 5 be fixedly connected respectively by screw between upper plate 11 and lower plate 12.
The top surface of the upper plate 11 and the bottom surface of lower plate 12 are equipped with weight loss groove.
The upper plate 11, lower plate 12, radiation assembly 2 and two blocks of wing plates 3 are all made of 3A21 aluminium alloys.
The upper plate 11 is equipped with multiple fixed blocks 112 in the both sides for prolonging its length direction.
According to the structure of above-mentioned antenna, the radiation port of guide hole 21 and conduit 211 the composition antenna of radiation assembly 2, convex block 121
It is equivalent to the coupling boss of slow wave line component, through-hole 111 is equivalent to the coupling aperture of slow wave line component.
The antenna in the utility model is illustrated with reference to embodiment.
Embodiment 1：
Reception and emission process may be implemented in the antenna of the utility model during the work time.
When the antennas receive signals, received signal is coupled at coupling aperture and coupling boss from radiation port, so
It is transmitted afterwards along slow wave line, main wave signal is transmitted to waveguide switch 4, and noise signal exists to load transmission, main wave signal
It is converted into electric signal at waveguide switch 4, receiving unit is transferred to by radio frequency connector, noise signal is inhaled at load 5
It receives；
When antenna emits signal, the electric signal transmission that emitting module is sent out is to radio frequency connector, then is transmitted to waveguide and turns
Parallel operation 4 becomes transmitted wave signal after conversion, and transmitted wave signal is transmitted along slow wave line, in each coupling aperture and coupling
It closes lug boss position to be coupled, then by radiation port to spatial emission, extra transmitted wave signal transmission is inhaled at load 5
It receives.
In the gain of antenna calculates, the input power of antenna and the reduction formula of output power are：
Wherein, G is antenna gain, P2For output power, P1For input power.From formula as can be seen that antenna gain can
Antenna is allowed to realize that the big output of small input is best, by formula it is found that the gain the big more can realize this purpose.Therefore,
The height of antenna transmission loss is mainly reflected in antenna performance in antenna gain.
The antenna of the utility model and the antenna gain of traditional antenna are compared below by emulation.
As shown in Figure 6 a, Fig. 6 a are simulation model when being equipped with conduit at the upper outlet of the guide hole of this antenna.Fig. 7 a, Fig. 7 b
Respectively azimuth plane directional diagram partial enlarged view in the analogous diagram of each frequency point azimuth plane directional diagram of this antenna and simulation result.
As shown in Figure 6 b, Fig. 6 b are the simulation model when upper outlet of the guide hole of traditional antenna is not provided with conduit.Fig. 8 a, figure
8b be respectively each frequency point azimuth plane directional diagram of traditional antenna analogous diagram and simulation result in azimuth plane directional diagram partial enlarged view.
It is 25.95dBi, 19.98GHz frequency points m1 from can be seen that gain from 15.74GHz frequency points m2 in Fig. 7 a and Fig. 7 b
Place's gain is 26.36dBi.It is 23.3dBi from can be seen that gain from 15.74GHz frequency points m2 in Fig. 8 a and Fig. 8 b,
Gain is 24.53dBi at 19.98GHz frequency points m1.Can it is above-mentioned it is found that at the upper outlet of the guide hole of this antenna be equipped with conduit when,
Gain increases 2.65dBi at 15.74GHz frequency points, at 19.98GHz frequency points gain increase 1.83dBi.It can be seen that this practicality is new
When being equipped with conduit at the upper outlet of the guide hole of the antenna of type, the mutual coupling effect between the signal given off is reduced, enhances frequency
Gain at point, improves the working performance of antenna.
In conclusion the antenna of the utility model reduces the mutual coupling effect between the signal given off, there is transmission letter
The advantages of number loss is small, antenna transmission power is high, investigative range is remote, good operating stability, meeting the performance of routine work needs
The requirement of summation outdoor environment.
Claims (9)
1. a kind of frequency scanning phased array antenna, it is characterised in that：Including slow wave line component (1), radiation assembly (2) and two pieces of wings
Plate (3)；The slow wave line component (1) is fixedly connected with radiation assembly (2), cavity and the radiation assembly (2) of slow wave line component (1)
Guide hole (21) one end open connection, two pieces of wing plates (3) are fixed on radiation assembly (2), two pieces of wing plates (3) positions respectively
In the both sides of another end opening of the guide hole of radiation assembly (2)；The one end of the cavity of the slow wave line component (1) is equipped with waveguide
Converter (4).
2. a kind of frequency scanning phased array antenna according to claim 1, it is characterised in that：The slow wave line component (1)
Including upper plate (11) and lower plate (12), upper plate (11) is fixedly connected with lower plate (12)；The bottom surface of the upper plate (11) and lower plate
(12) groove of snakelike shape is equipped on the corresponding position of top surface, the cavity of the slow wave line component (1) is by upper plate (11)
Bottom recesses and lower plate (12) top surface groove fasten and the snake shaped inner chamber that is formed；The waveguide switch (4) is located at institute
A cephalic par of cavity is stated, waveguide switch (4) is respectively fixedly connected with upper plate (11) and lower plate (12)；The radiation assembly
(2) bottom surface is fixedly connected with the top surface of the upper plate (11), and two pieces of wing plates (3) are fixed on the top surface of radiation assembly (2)
On.
3. a kind of frequency scanning phased array antenna according to claim 2, it is characterised in that：The top surface of the lower plate (12)
Multiple convex blocks (121) are equipped in groove on the length direction along lower plate (12), the height of the convex block (121) is less than lower plate
(12) top surface depth of groove；The upper plate (11) is equipped with multiple through-holes (111), institute on position corresponding with convex block (121)
State the cavity of through-hole (111) connection slow wave line component (1)；The radiation assembly (2) is on its position corresponding with through-hole (111)
Equipped with guide hole (21), the under shed of guide hole (21) is connected to through-hole (111)；Two pieces of wing plates (3) are separately fixed at guide hole
(21) both sides of upper opening.
4. a kind of frequency scanning phased array antenna according to claim 3, it is characterised in that：Multiple convex blocks (121),
Through-hole (111) and the linearly arrangement of guide hole (21)；The upper opening of all guide holes (21) is equipped with protrusion radiation assembly (2)
Top surface conduit (211), the upper open communication of the tube chamber and guide hole (21) of the conduit (211)；Two pieces of wing plates (3)
Length direction is formed by straight line each parallel to the center of multiple guide holes (21), and two pieces of wing plates (3) are along by guide hole
(21) exported under on the direction of guide hole (21) upper outlet is in open-like shape；Two pieces of wing plates (3) are along multiple guide holes (21)
It is symmetrical that center is formed by straight line, and wing plate (3) is tilted towards from being laterally away from perforated member side close to perforated member one
Upper extension.
5. a kind of frequency scanning phased array antenna according to claim 4, it is characterised in that：The slow wave line component (1)
The other end of cavity be equipped with load (5), the load (5) is respectively fixedly connected with upper plate (11) and lower plate (12).
6. a kind of frequency scanning phased array antenna according to claim 5, it is characterised in that：The slow wave line component (1)
Upper plate (11) and lower plate (12) between be welded and fixed by vacuum Aluminum brazing；The radiation assembly (2) and the upper plate (11)
Top surface between, between two pieces of wing plates (3) and radiation assembly (2), waveguide switch (4) respectively with upper plate (11) and lower plate
(12) between, (5) is loaded and are fixedly connected respectively by screw between upper plate (11) and lower plate (12).
7. a kind of frequency scanning phased array antenna according to claim 6, it is characterised in that：The top surface of the upper plate (11)
It is equipped with weight loss groove with the bottom surface of lower plate (12).
8. a kind of frequency scanning phased array antenna according to claim 7, it is characterised in that：The upper plate (11), lower plate
(12), radiation assembly (2) and two pieces of wing plates (3) are all made of 3A21 aluminium alloys.
9. a kind of frequency scanning phased array antenna according to claim 8, it is characterised in that：The upper plate (11) is along it
The both sides of length direction are equipped with multiple fixed blocks (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721425957.6U CN207677094U (en) | 2017-10-31 | 2017-10-31 | A kind of frequency scanning phased array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721425957.6U CN207677094U (en) | 2017-10-31 | 2017-10-31 | A kind of frequency scanning phased array antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207677094U true CN207677094U (en) | 2018-07-31 |
Family
ID=62963940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721425957.6U Withdrawn - After Issue CN207677094U (en) | 2017-10-31 | 2017-10-31 | A kind of frequency scanning phased array antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207677094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054523A (en) * | 2017-10-31 | 2018-05-18 | 安徽四创电子股份有限公司 | A kind of frequency scanning phased array antenna |
-
2017
- 2017-10-31 CN CN201721425957.6U patent/CN207677094U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054523A (en) * | 2017-10-31 | 2018-05-18 | 安徽四创电子股份有限公司 | A kind of frequency scanning phased array antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108054523A (en) | A kind of frequency scanning phased array antenna | |
| CN207303367U (en) | A kind of antenna integrated unit and more array antennas | |
| CN109755750B (en) | Dual-polarized feed source for feeding of broadband ridge-added orthogonal mode converter | |
| CN104485522B (en) | A kind of dual polarization slot-coupled antenna | |
| CN106877008B (en) | A kind of minimized wide-band frequency-directional diagram reconstructable aerial | |
| CN106207439A (en) | A kind of dual circularly polarized antenna unit and array antenna | |
| CN209217191U (en) | Millimetre-wave radar plane parasitic broadband antenna array, radar antenna and radar | |
| CN109980365A (en) | A kind of extensive MIMO active antenna array applied to 5G millimetre-wave attenuator | |
| CN207677094U (en) | A kind of frequency scanning phased array antenna | |
| CN206432386U (en) | A kind of ultra-wideband dual-band and dual-polarization plate antenna | |
| CN110808462A (en) | Millimeter wave printed dipole antenna array radiation unit and array antenna | |
| CN106207475B (en) | A kind of multiband complete polarization antenna feed device of Shared aperture multiplexing | |
| CN211907692U (en) | Full-band single-polarization directional wall-mounted antenna | |
| CN104966903A (en) | Suspended microstrip antenna array for 60GHz millimeter wave communication and antenna thereof | |
| CN220324700U (en) | Antenna unit based on waveguide conversion | |
| CN209487711U (en) | A kind of microstrip antenna of fluting punching double frequency | |
| CN208937704U (en) | A kind of multichannel tile type transmitting-receiving subassembly | |
| CN108172966B (en) | A kind of quarter-phase center survey high frequency scan antenna | |
| CN115133259B (en) | Compact broadband dual circularly polarized antenna | |
| CN210404053U (en) | Multi-frequency-band elevator shaft antenna | |
| CN108987949A (en) | A kind of antenna system of restructural radiation mode | |
| CN110416704A (en) | A kind of antenna radiation unit and wide frequency antenna | |
| CN114284681A (en) | Interference monitoring and positioning array antenna device for unmanned ship | |
| CN102800970B (en) | H-faced printing loudspeaker antenna of loading medium-metal compound lens | |
| CN1610182A (en) | Multi-channel antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180731 Effective date of abandoning: 20230711 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180731 Effective date of abandoning: 20230711 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |