CN108832291A - A kind of substrate integrated waveguide filtering antenna - Google Patents
A kind of substrate integrated waveguide filtering antenna Download PDFInfo
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- CN108832291A CN108832291A CN201810661593.4A CN201810661593A CN108832291A CN 108832291 A CN108832291 A CN 108832291A CN 201810661593 A CN201810661593 A CN 201810661593A CN 108832291 A CN108832291 A CN 108832291A
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- 239000000758 substrate Substances 0.000 title claims abstract description 102
- 238000001914 filtration Methods 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 89
- 229910052751 metal Inorganic materials 0.000 claims abstract description 89
- 230000008878 coupling Effects 0.000 claims abstract description 23
- 238000010168 coupling process Methods 0.000 claims abstract description 23
- 238000005859 coupling reaction Methods 0.000 claims abstract description 23
- 239000000523 sample Substances 0.000 claims abstract description 22
- 230000000295 complement effect Effects 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims description 8
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 230000005855 radiation Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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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- Waveguide Aerials (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The present invention relates to a kind of substrate integrated waveguide filtering antennas, belong to filter antenna technical field, which includes upper and lower layer medium substrate, metal throuth hole, metal Coupling probe, complementary breach resonant ring, driving source and earth plate；The surface of upper and lower layer medium substrate is rectangle, and upper and lower layer medium substrate fits closely up and down, and the upper surface of upper layer medium substrate is provided with earth plate, and the upper and lower surface of layer dielectric substrate is provided with earth plate；Metal throuth hole is used to constitute the metallic walls of upper and lower resonant cavity on upper and lower layer medium substrate；Complementary breach resonant ring is etched on the earth plate of upper layer medium substrate upper surface；Metal Coupling probe is to connect the metal ground plate of layer dielectric base lower surface and the metal ground plate of upper layer medium substrate upper surface；Driving source includes sequentially connected 50 ohm microstrip, co-planar waveguide and rectangular channel.Filter antenna matching of the present invention is good, and has good Out-of-band rejection and flat passband gain.
Description
Technical field
The invention belongs to filter antenna technical fields, are related to a kind of substrate integrated waveguide filtering antenna.
Background technique
In recent years, with communication equipment miniaturization, the development of densification, it is desirable that radio frequency front-end devices have multifunction.
As radio-frequency front-end important component, integrated, integrated design is had received widespread attention for antenna and filter.Have
The filter antenna of Out-of-band rejection function is designed to for current research hotspot.
Summary of the invention
In view of this, having the function of good Out-of-band rejection and flat passband the purpose of the present invention is to provide a kind of
A kind of substrate integrated waveguide filtering antenna of gain, while realizing low, the compact dimensions of antenna section height, it is easy to and other planes
The purpose of circuit integration.
In order to achieve the above objectives, the present invention provides the following technical solutions：
A kind of substrate integrated waveguide filtering antenna, the antenna include upper and lower layer medium substrate, metal throuth hole, metal Coupling
Probe, complementary breach resonant ring, driving source and earth plate；
The surface of the upper and lower layer medium substrate is rectangle, and the upper and lower layer medium substrate fits closely up and down, upper layer
The upper surface of medium substrate is provided with earth plate, and the upper and lower surface of layer dielectric substrate is provided with earth plate；
The metal throuth hole is used to constitute the metallic walls of upper and lower resonant cavity on the upper and lower layer medium substrate, above,
The metal throuth hole position of layer dielectric substrate is asymmetric, and the metal throuth hole of resonant cavity runs through the upper layer medium substrate in composition
And its earth plate, and it is linearly distributed in the surrounding of the upper layer medium substrate, upper layer medium substrate and its earth plate, upper layer is situated between
The earth plate of the metal throuth hole of matter substrate, layer dielectric upper surface of base plate constitutes the upper resonant cavity；
The metal throuth hole of lower resonant cavity is constituted through the layer dielectric substrate and its earth plate of upper and lower surfaces, and
Linearly it is distributed in the surrounding of the layer dielectric substrate, the earth plate of layer dielectric substrate and its upper and lower surfaces, layer dielectric
The metal throuth hole of substrate constitutes the lower resonant cavity；
The complementation breach resonant ring is etched on the earth plate of upper layer medium substrate upper surface, the complementation breach resonance
Ring is not closed, and the complementation breach resonant ring is positioned close to around the metal throuth hole of upper layer medium substrate；
The metal Coupling probe extends through upper layer medium substrate upper surface by the earth plate of layer dielectric base lower surface
Earth plate, metal Coupling probe location is at complementary breach resonant ring breach, to connect layer dielectric base lower surface
Metal ground plate and upper layer medium substrate upper surface metal ground plate；
The driving source includes sequentially connected 50 ohm microstrip, co-planar waveguide and rectangular channel, 50 ohm microstrip
Line, co-planar waveguide and rectangular channel ecto-entad are arranged on the earth plate of the layer dielectric base lower surface.
Further, the upper and lower layer medium substrate is the square of side length 68mm, and size is identical, with a thickness of 1.575mm,
The surface that the upper and lower layer medium substrate is completely covered of three layers of earth plate.
Further, the radius of the metal throuth hole of the upper layer medium substrate is 0.5mm, and spacing is between metal throuth hole center
1.7mm, the radius of the metal throuth hole of the layer dielectric substrate are 0.5mm, and spacing is 1.8mm between metal throuth hole center.
Further, the broadside gap length of the complementary breach resonant ring is 42.6mm, and broadside gap width is 0.8mm,
Narrow side gap length is 33.6mm, and narrow side gap width is 1.5mm, and the breach position of complementary breach resonant ring is about narrow side center
Symmetrically, breach length is 3mm.
Further, the metal Coupling probe radius is 0.3mm, and the complementary breach resonant ring of metal Coupling probe distance is nearest
Broadside gap be 12.1mm, narrow side gap be 1.7mm.
Further, central axes mirror symmetry of the rectangular channel about coplanar waveguide feeder line, the 50 ohm microstrip wire length
Degree is 10.5mm, and width 3mm, co-planar waveguide length is 15.7mm, and the gap width of width 3mm, co-planar waveguide are
0.5mm, rectangle slot length are 4.5mm, width 1.3mm.
The beneficial effects of the present invention are：
1, by constructing resonant cavity respectively on the two pieces of medium substrates placed vertically, pass through metal between two resonance
Coupling probe realizes the coupling of electromagnetic energy, to introduce the function of filtering, in order to form effective electromagnetic energy radiation, uses
Complementary breach resonant ring is etched in the upper metal surface of upper layer medium substrate.
2, filter antenna matching is good, and has good Out-of-band rejection and flat passband gain, peak gain
Reach 6.7dBi, -10dB impedance bandwidth is more than 6%, can be applied to filter antenna in complicated electromagnetic signal environment.
3, filter antenna has compact structure, and section height is only 0.03 λ0, easy to process integrated.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing and carries out
Explanation：
Fig. 1 is the overall structure 3-D view of filter antenna of the present invention；
Fig. 2 is the top view of filter antenna upper layer of the present invention metal ground plate；
Fig. 3 is the top view of filter antenna middle layer metal earth plate of the present invention；
Fig. 4 is the top view of filter antenna lower metal earth plate of the present invention；
Fig. 5 is the S parameter of filter antenna of the present invention and can realize gain curve figure；
Fig. 6 is the E plane of filter antenna center frequency point of the present invention, H planar radiation field pattern.
Specific embodiment
Below in conjunction with attached drawing, a preferred embodiment of the present invention will be described in detail.
A kind of substrate integrated waveguide filtering antenna, including two pieces of medium substrates 1,2, metal throuth hole 6, metal Coupling probe 8,
The structures such as complementary breach resonant ring 7, driving source, earth plate；Two pieces of medium substrates fit closely vertically, layer dielectric substrate 2
Upper and lower surface is provided with the earth plate 4,5 of metal material, and upper layer medium substrate 1 only has upper surface and is provided with metal material
Earth plate 3；Metal throuth hole 6 is used to constitute the metallic walls of resonant cavity on upper and lower base plate respectively, and lower chamber is by layer dielectric base
Plate 2, the earth plate 4 of 2 upper and lower surface of layer dielectric substrate, 5, the metal throuth hole 6 of surrounding form, and upper cavity is by upper layer medium substrate
1,1 upper surface earth plate 3 of upper layer medium substrate, the upper surface earth plate 4 of layer dielectric substrate 2,6 groups of metal throuth hole of surrounding
At；The ground connection of earth plate and upper layer medium substrate 1 upper surface of the metal Coupling probe 8 to connect layer dielectric base lower surface
Plate 3；Complementary breach resonant ring 7 is etched on the upper surface metal ground plate of upper layer medium substrate；Driving source is by 50 ohm microstrips
Line 9, coplanar waveguide feeder line are with 10 and are etched on layer dielectric base lower surface earth plate about coplanar waveguide feeder line center pair
Two rectangular channels 11 composition claimed.
Two pieces of medium substrates fit closely vertically, and the upper and lower surface of layer dielectric substrate is respectively provided with earth plate, and lower surface connects
Having a size of 68mm × 58mm, upper surface ground-plane size is 68mm × 68mm on floor, the size of respective media substrate be 68mm ×
68mm, with a thickness of 1.575mm, the upper surface of upper layer medium substrate is arranged earth plate, upper surface ground-plane size be 68mm ×
The size of 68mm, respective media substrate are 68mm × 68mm, with a thickness of 1.575mm.
Two resonant cavity up and down of metal throuth hole composition, upper resonant cavity is by upper layer medium substrate, upper layer medium substrate
Surface earthing plate, the upper surface earth plate of layer dielectric substrate, the metal throuth hole composition in upper layer medium substrate, metal throuth hole half
Diameter is 0.5mm, and metal throuth hole center spacing is 1.7mm, and lower resonant cavity is by following table on layer dielectric substrate, layer dielectric substrate
Metal throuth hole composition in face earth plate, layer dielectric substrate, metal throuth hole radius is 0.5mm, and metal throuth hole center spacing is
1.8mm。
Complementary breach resonant ring is etched on the earth plate of upper layer medium substrate upper surface, and broadside gap length is 42.6mm,
Gap width is 0.8mm, and narrow side gap length is 33.6mm, and gap width 1.5mm, breach position is in narrow side, about narrow
Side central symmetry, breach length are 3mm.
Metal Coupling probe extends through upper layer medium substrate upper surface earth plate by layer dielectric base lower surface earth plate,
For metal Coupling probe location at complementary breach resonant ring breach, metal Coupling probe radius is 0.3mm, metal Coupling probe
The nearest broadside gap of the complementary breach resonant ring of distance is 12.1mm, and narrow side gap is 1.7mm.
Driving source is by 50 ohm microstrips, coplanar waveguide feeder line and is etched on layer dielectric base lower surface earth plate
About the centrosymmetric two rectangular channels composition of coplanar waveguide feeder line, corresponding 50 ohm microstrip line length is 10.5mm, width
For 3mm, co-planar waveguide length is 15.7mm, width 3mm, gap width 0.5mm, and rectangle slot length is 4.5mm, and width is
1.3mm。
Specific embodiment
Fig. 1 is the overall structure 3-D view of filter antenna of the invention, as shown in the figure：Filter antenna of the present invention, including
Upper layer medium substrate 1, layer dielectric substrate 2, upper layer metal ground plate 3, middle layer metal earth plate 4, lower metal earth plate 5,
Metal throuth hole 6, complementary breach resonant ring 7, metal Coupling probe 8,50 ohm microstrips 9, co-planar waveguide 10, rectangular channel 11.
Upper layer medium substrate 1 with a thickness of 1.575mm, upper surface of base plate is close to upper layer metal ground plate 3, base lower surface
It is close to middle layer metal earth plate 4, complementary breach resonant ring is etched on upper layer metal ground plate 3, and upper resonant cavity is situated between by upper layer
Matter substrate 1, upper layer metal ground plate 3, middle layer metal earth plate 4, metal throuth hole composition, metal Coupling probe 8 are directly connected to down
Layer metal ground plate 5 and upper layer metal ground plate 3.
Layer dielectric substrate 2 with a thickness of 1.575mm, upper surface of base plate is close to middle layer metal earth plate 4, and lower surface is close to
Lower metal earth plate 5, lower resonant cavity is by layer dielectric substrate 2, middle layer metal earth plate 4, lower metal earth plate 5, gold
Belong to sets of vias layer, driving source is made of 50 ohm microstrips 9, co-planar waveguide 10, rectangular channel 11.
2 two medium substrates of upper layer medium substrate 1 and layer dielectric substrate fit closely vertically, and material has selected The
Rogers Duroid 5880, relative dielectric constant 2.2, relative permeability 1.0, loss angle tangent 0.0009.
Metal ground plate, 50 ohm microstrip metal bands, which are that thickness is identical, covers Copper thin film.
After completing above-mentioned initial designs, simulation analysis is carried out using high-frequency electromagnetic simulation software HFSS13.0, is passed through
It is as shown in the table that parameters size is obtained after simulation optimization：
Referring to attached drawing 2,3,4, W1, L1 respectively represent the width and length of lower resonant cavity, and W2, L2 respectively represent resonance
The width and length of cavity, Wp, Lp respectively represent the width and length of complementary breach resonant ring, and gy, gx respectively represent complementation and split
Mouth resonant ring gap width, d, s respectively represent the direct spacing between metal throuth hole of metal throuth hole, and p represents metal Coupling
Probe diameter, fw represent the width of co-planar waveguide, and pw represents co-planar waveguide gap width, mw, ml represent rectangular channel width and
Length.
1 each parameter optimum size table of the present invention of table
According to above-mentioned parameter, using HFSS to a kind of reflection coefficient of designed substrate integrated waveguide filtering antenna | S11|
Characterisitic parameter and can realize gain carry out simulation analysis, analysis result it is as follows：
Fig. 5 is the S parameter and can realize gain curve graph varying with frequency that emulation of the invention obtains.As shown,
Related Antenna Operation frequency range is 2.855GHz~3.040GHz, and resonance center frequency point is 2.95GHz, and -10dB bandwidth is
185MHz；It is can be seen that from achievable gain curve, it can be achieved that gain curve has the function of good Out-of-band rejection, maximum gain
For 7.18dBi, and gain is relatively flat in passband.Fig. 6 be emulation antenna in resonance frequency point 2.95GHz respectively in the face E and H
The directional diagram in face, it can be seen from the figure that there is antenna good side to penetrate radiation characteristic.
Finally, it is stated that preferred embodiment above is only to illustrate the technical solution of invention rather than limits, although passing through
Above preferred embodiment is described in detail the present invention, however, those skilled in the art should understand that, can be in shape
Various changes are made in formula and to it in details, without departing from claims of the present invention limited range.
Claims (6)
1. a kind of substrate integrated waveguide filtering antenna, it is characterised in that：The antenna include upper and lower layer medium substrate, metal throuth hole,
Metal Coupling probe, complementary breach resonant ring, driving source and earth plate；
The surface of the upper and lower layer medium substrate is rectangle, and the upper and lower layer medium substrate fits closely up and down, top dielectric
The upper surface of substrate is provided with earth plate, and the upper and lower surface of layer dielectric substrate is provided with earth plate；
The metal throuth hole is used to constitute the metallic walls of upper and lower resonant cavity, upper and lower layer on the upper and lower layer medium substrate
The metal throuth hole position of medium substrate is asymmetric, in compositions the metal throuth hole of resonant cavity run through the upper layer medium substrate and its
Earth plate, and it is linearly distributed in the surrounding of the upper layer medium substrate, upper layer medium substrate and its earth plate, top dielectric base
The earth plate of the metal throuth hole of plate, layer dielectric upper surface of base plate constitutes the upper resonant cavity；
The metal throuth hole of lower resonant cavity is constituted through the layer dielectric substrate and its earth plate of upper and lower surfaces, and in straight
Line is distributed in the surrounding of the layer dielectric substrate, the earth plate of layer dielectric substrate and its upper and lower surfaces, layer dielectric substrate
Metal throuth hole constitute the lower resonant cavity；
The complementation breach resonant ring is etched on the earth plate of upper layer medium substrate upper surface, and the complementation breach resonant ring is not
Closure, the complementation breach resonant ring are positioned close to around the metal throuth hole of upper layer medium substrate；
The metal Coupling probe extends through connecing for upper layer medium substrate upper surface by the earth plate of layer dielectric base lower surface
Floor, metal Coupling probe location is at complementary breach resonant ring breach, to connect the gold of layer dielectric base lower surface
Belong to the metal ground plate of earth plate and upper layer medium substrate upper surface；
The driving source includes sequentially connected 50 ohm microstrip, co-planar waveguide and rectangular channel, and 50 ohm microstrip is total
Surface wave, which is led, to be arranged on the earth plate of the layer dielectric base lower surface with rectangular channel ecto-entad.
2. a kind of substrate integrated waveguide filtering antenna according to claim 1, it is characterised in that：The upper and lower layer medium
Substrate is the square of side length 68mm, and size is identical, with a thickness of 1.575mm, three layers of earth plate be completely covered it is described it is upper,
The surface of layer dielectric substrate.
3. a kind of substrate integrated waveguide filtering antenna according to claim 1, it is characterised in that：The upper layer medium substrate
The radius of metal throuth hole be 0.5mm, spacing is 1.7mm, the metal throuth hole of the layer dielectric substrate between metal throuth hole center
Radius be 0.5mm, spacing is 1.8mm between metal throuth hole center.
4. a kind of substrate integrated waveguide filtering antenna according to claim 1, it is characterised in that：The complementation breach resonance
The broadside gap length of ring is 42.6mm, and broadside gap width is 0.8mm, and narrow side gap length is 33.6mm, narrow side slit width
Degree is 1.5mm, and about narrow side central symmetry, breach length is 3mm for the breach position of complementary breach resonant ring.
5. a kind of substrate integrated waveguide filtering antenna according to claim 4, it is characterised in that：The metal Coupling probe
Radius is 0.3mm, and the nearest broadside gap of the complementary breach resonant ring of metal Coupling probe distance is 12.1mm, and narrow side gap is
1.7mm。
6. a kind of substrate integrated waveguide filtering antenna according to claim 1, it is characterised in that：The rectangular channel is about altogether
The central axes mirror symmetry of face waveguide feeder, the 50 ohm microstrip line length are 10.5mm, width 3mm, and co-planar waveguide is long
Degree is 15.7mm, and width 3mm, the gap width of co-planar waveguide is 0.5mm, and rectangle slot length is 4.5mm, width 1.3mm.
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| CN201810661593.4A CN108832291B (en) | 2018-06-25 | 2018-06-25 | Substrate integrated waveguide filter antenna |
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| CN108832291B CN108832291B (en) | 2020-05-19 |
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Cited By (11)
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| CN109728425A (en) * | 2018-12-18 | 2019-05-07 | 南通大学 | Dual polarization filters paster antenna |
| CN110137637A (en) * | 2019-04-24 | 2019-08-16 | 广东曼克维通信科技有限公司 | A kind of LTCC miniaturized substrate integrated waveguide filter |
| CN110459858A (en) * | 2019-06-30 | 2019-11-15 | 南通大学 | A kind of filter antenna based on substrate collection coelosis |
| WO2020140578A1 (en) * | 2018-12-31 | 2020-07-09 | 瑞声声学科技(深圳)有限公司 | Filter antenna |
| CN111628282A (en) * | 2020-06-02 | 2020-09-04 | 北京邮电大学 | Vertical feed's dual-frenquency filtering patch antenna |
| CN112003018A (en) * | 2020-08-26 | 2020-11-27 | 维沃移动通信有限公司 | Electronic device |
| CN113097711A (en) * | 2021-03-31 | 2021-07-09 | 华南理工大学 | Substrate integrated waveguide filter antenna with high selective radiation efficiency |
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| WO2020140578A1 (en) * | 2018-12-31 | 2020-07-09 | 瑞声声学科技(深圳)有限公司 | Filter antenna |
| US11336000B2 (en) | 2018-12-31 | 2022-05-17 | AAC Technologies Pte. Ltd. | Filter antenna |
| CN110137637A (en) * | 2019-04-24 | 2019-08-16 | 广东曼克维通信科技有限公司 | A kind of LTCC miniaturized substrate integrated waveguide filter |
| CN110459858A (en) * | 2019-06-30 | 2019-11-15 | 南通大学 | A kind of filter antenna based on substrate collection coelosis |
| CN111628282B (en) * | 2020-06-02 | 2021-06-15 | 北京邮电大学 | Vertical feed's dual-frenquency filtering patch antenna |
| CN111628282A (en) * | 2020-06-02 | 2020-09-04 | 北京邮电大学 | Vertical feed's dual-frenquency filtering patch antenna |
| CN112003018A (en) * | 2020-08-26 | 2020-11-27 | 维沃移动通信有限公司 | Electronic device |
| CN113097711A (en) * | 2021-03-31 | 2021-07-09 | 华南理工大学 | Substrate integrated waveguide filter antenna with high selective radiation efficiency |
| CN113340452A (en) * | 2021-04-14 | 2021-09-03 | 中北大学 | Wireless passive high-sensitivity high-temperature sensor based on improved CSRR-SICW |
| CN113300100A (en) * | 2021-05-25 | 2021-08-24 | 内蒙古显鸿科技股份有限公司 | Tunable microstrip antenna device |
| CN113922091A (en) * | 2021-09-24 | 2022-01-11 | 南京邮电大学 | Dual-frequency broadband filtering antenna based on microstrip patch and substrate integrated waveguide resonator |
| CN113922091B (en) * | 2021-09-24 | 2023-12-12 | 南京邮电大学 | Dual-frequency broadband filter antenna based on microstrip patch and substrate integrated waveguide resonator |
| CN115051154A (en) * | 2022-07-27 | 2022-09-13 | 重庆邮电大学 | Differential broadband end-fire filtering antenna based on open stepped slot |
| CN115051154B (en) * | 2022-07-27 | 2023-07-18 | 重庆邮电大学 | Differential broadband end-fire filter antenna based on open stepped slot |
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Effective date of registration: 20201222 Address after: No. 10, Yingbin Avenue, Dongtai Development Zone, Yancheng City, Jiangsu Province Patentee after: Jiangsu Chuangqi Testing Technology Co.,Ltd. Address before: 400044 No. 174 Shapingba street, Shapingba District, Chongqing Patentee before: Chongqing University |
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Application publication date: 20181116 Assignee: DONGTAI GAOKE TECHNOLOGY INNOVATION PARK Co.,Ltd. Assignor: Jiangsu Chuangqi Testing Technology Co.,Ltd. Contract record no.: X2023980048819 Denomination of invention: A substrate integrated waveguide filtering antenna Granted publication date: 20200519 License type: Common License Record date: 20231202 |