CN107634326A - A kind of ultra wide band conelike beam antenna based on plane four-arm spiral antenna - Google Patents
A kind of ultra wide band conelike beam antenna based on plane four-arm spiral antenna Download PDFInfo
- Publication number
- CN107634326A CN107634326A CN201710737234.8A CN201710737234A CN107634326A CN 107634326 A CN107634326 A CN 107634326A CN 201710737234 A CN201710737234 A CN 201710737234A CN 107634326 A CN107634326 A CN 107634326A
- Authority
- CN
- China
- Prior art keywords
- plane
- antenna
- arm spiral
- wide band
- spiral antenna
- 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.)
- Pending
Links
Landscapes
- Details Of Aerials (AREA)
Abstract
The invention discloses a kind of ultra wide band conelike beam antenna based on plane four-arm spiral antenna, including plane four-arm spiral antenna radiation body, metal cup-shaped chamber, dielectric passivation and the metal patch for being printed on dielectric passivation upper surface, plane four-arm spiral antenna radiation body is arranged on the lower surface of dielectric passivation, and directly over metal cup-shaped chamber, the inner chamber top of metal cup-shaped chamber is divided into cylinder, bottom is divided into back taper, and metal cup-shaped bottom of chamber portion is provided with a cone boss.Metal patch is along circular media coating upper surface outer equidistantly distributed, and the distance at each metal patch to dielectric passivation center is equal, the gain at the low elevation angle for improving antenna.The present invention antenna there is ultra wide band, broad beam is simple in construction, it is easy to process the advantages that, different hair working frequency range can be applied to by the scaling of structural parameters.
Description
Technical field
The invention belongs to ultra-wideband antenna field, and in particular to a kind of ultra wide band taper based on plane four-arm spiral antenna
Beam antenna.
Background technology
Flat helical antenna have the advantages that impedance bandwidth is wide, section is low, axle than low, multiple-working mode, set in antenna
Meter field receives significant attention.Its antenna pattern of traditional flat helical antenna is directed along antenna axial direction, and works in two
Its antenna pattern of the flat helical antenna of secondary mould is conelike beam, and more preferable radiance can be obtained at the low elevation angle.For reality
The one-way radiation of existing antenna, it will usually in the side degree of increasing of flat helical antenna be about quarter-wave metal back of the body chamber.
Due to carrying on the back chamber constant height, emittance can not realize in-phase stacking on whole working frequency range.
(Elmansouri, Mohamed A., M.J.Radway, and the D.S.Filipovic. " Frequency- of document 1
and Time-Domain Performance of Four-Arm Mode-2Spiral Antennas,”IEEE
Transactions on Antennas&Propagation 60.6(2012):2627-2634.) when plane four-arm spiral antenna
Phase between adjacent feed points meets to radiate conelike beam when { 0 °, 180 °, 0 °, 180 ° }.
(Ge, Xuxu, et al. " the An improved hat-shaped cavity-backed Archimedean of document 2
spiral antenna."International Symposium on Antennas,Propagation&Em Theory
IEEE,2012:97-100.) chamber and dielectric passivation broadening antenna beamwidth, but indivedual frequency directional diagrams are carried on the back by capping shape
Distortion.
From the foregoing, it will be observed that although prior art realizes the design of conelike beam antenna, and the back of the body chamber of antenna is also made
Related improvement, but beam angle is still narrower.
The content of the invention
It is an object of the invention to provide a kind of ultra wide band conelike beam antenna for being based on plane four-arm spiral antenna,
Strengthen radiance of the antenna at the low elevation angle while broadband is realized.
The technical solution for realizing the object of the invention is：A kind of ultra wide band taper ripple based on plane four-arm spiral antenna
Beam antenna, including plane four-arm spiral antenna radiate body, metal cup-shaped chamber, dielectric passivation and are printed on dielectric passivation
The metal patch of upper surface, the plane four-arm spiral antenna radiation body is arranged on the lower surface of dielectric passivation, and is located at
Directly over metal cup-shaped chamber, the inner chamber top of the metal cup-shaped chamber is divided into cylinder, and bottom is divided into back taper, and metal cup-shaped
Bottom of chamber portion is provided with a cone boss, and the cone boss small end face stretches to metal cup-shaped intracavitary, cone boss and metal cup-shaped chamber
Center line overlap.
Preferably, metal patch is along circular media coating upper surface outer equidistantly distributed, and each metal patch arrives
The distance at dielectric passivation center is equal.
Preferably, the girth of plane four-arm spiral antenna radiation body is less than two times of ripples of Antenna Operation frequency range lowest frequency
It is long.
Preferably, the internal diameter in metal cup-shaped bottom of chamber portion is less than the bore of metal cup-shaped chamber.
Preferably, the total height H of metal cup-shaped back of the body chamber [2] is 14mm, bore 2*R0=31mm, the internal diameter of bottom are
2*r2=28mm, the height h of lower part back taper inner chamber2For 6mm, the height h of the cone boss of metal cup-shaped back of the body chamber [2] bottom1
For 9mm, the radius r at the top of cone boss0For 1mm, the radius r of cone boss bottom1For 11mm.
Preferably, the diameter of dielectric passivation is more than the diameter of plane four-arm spiral antenna radiation body [1].
Preferably, the radius R of face four-arm spiral antenna radiation body [1]LFor 16mm.
Preferably, the thickness t of dielectric passivation is 1mm, and radius Rd is 25mm, thereon surface printing square metal paster
Length of side p be 3.6mm.
Compared with prior art, its remarkable advantage is the present invention：1) surpassing based on plane four-arm spiral antenna of the invention
Broadband conelike beam antenna, by carrying on the back the improvement of chamber to metal, avoid asking for indivedual frequency pattern distortions in working frequency range
Topic；2) the ultra wide band conelike beam antenna based on plane four-arm spiral antenna of the invention, in dielectric passivation upper surface periphery
Some metal patches are loaded, the radiance at the low elevation angle of antenna is further improved；3) it is of the invention based on the arm spiral shell of plane four
The ultra wide band conelike beam antenna structure for revolving antenna is simple, it is easy to accomplish.
The present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is a kind of structure three-dimensional figure of the ultra wide band conelike beam antenna based on plane four-arm spiral antenna of the present invention.
Fig. 2 is a kind of structural front view of the ultra wide band conelike beam antenna based on plane four-arm spiral antenna of the present invention.
Fig. 3 is a kind of structure top view of the ultra wide band conelike beam antenna based on plane four-arm spiral antenna of the present invention.
Fig. 4 is a kind of standing wave curve of the ultra wide band conelike beam antenna emulation based on plane four-arm spiral antenna of the present invention
With the contrast of the standing wave curve of traditional back cavity type four-arm spiral antenna emulation.
Fig. 5 is that a kind of frequency of the ultra wide band conelike beam antenna emulation based on plane four-arm spiral antenna of the present invention is
The contrast of antenna pattern and the antenna pattern of traditional back cavity type four-arm spiral antenna emulation during 8GHz.
Fig. 6 is that a kind of frequency of the ultra wide band conelike beam antenna emulation based on plane four-arm spiral antenna of the present invention is
The contrast of antenna pattern and the antenna pattern of traditional back cavity type four-arm spiral antenna emulation during 10GHz.
Fig. 7 is that a kind of frequency of the ultra wide band conelike beam antenna emulation based on plane four-arm spiral antenna of the present invention is
The contrast of antenna pattern and the antenna pattern of traditional back cavity type four-arm spiral antenna emulation during 12GHz.
Fig. 8 is that a kind of elevation angle of the ultra wide band conelike beam antenna emulation based on plane four-arm spiral antenna of the present invention is
The contrast of gain curve and the gain curve of traditional back cavity type four-arm spiral antenna emulation at 75 °.
Embodiment
With reference to accompanying drawing, a kind of ultra wide band conelike beam antenna based on plane four-arm spiral antenna, including the arm spiral shell of plane four
Revolve aerial radiation body 1, metal cup-shaped chamber 2, dielectric passivation 4 and the metal patch for being printed on the upper surface of dielectric passivation 4
3, the plane four-arm spiral antenna radiation body 1 is arranged on the lower surface of dielectric passivation 4, and positioned at metal cup-shaped chamber 2 just
Top, the inner chamber top of the metal cup-shaped chamber 2 are divided into cylinder, and bottom is divided into back taper, and the bottom of metal cup-shaped chamber 2 is provided with
One cone boss, the cone boss small end face are stretched in metal cup-shaped chamber 2, the center line of cone boss and metal cup-shaped chamber 2
Overlap.
In further embodiment, the metal patch 3 along the upper surface outer equidistantly distributed of circular media coating 4,
And the distance at each metal patch 3 to the center of dielectric passivation 4 is equal.
In further embodiment, the girth of plane four-arm spiral antenna radiation body 1 is minimum less than Antenna Operation frequency range
Two times of wavelength of frequency.
In further embodiment, the internal diameter of the metal cup-shaped bottom of chamber 2 is less than the bore of metal cup-shaped chamber 2.
In further embodiment, the total height H of metal cup-shaped back of the body chamber 2 is 14mm, bore 2*R0=31mm, bottom
Internal diameter be 2*r2=28mm, the height h of lower part back taper inner chamber2For 6mm, the cone boss of metal cup-shaped back of the body chamber 2 bottom
Height h1For 9mm, the radius r at the top of cone boss0For 1mm, the radius r of cone boss bottom1For 11mm.
In further embodiment, the diameter of dielectric passivation 4 is more than the straight of plane four-arm spiral antenna radiation body 1
Footpath.
In further embodiment, plane four-arm spiral antenna radiates the radius R of body 1LFor 16mm.
In further embodiment, the thickness t of dielectric passivation 4 is 1mm, and radius Rd is 25mm, thereon surface printing
The length of side p of square metal paster 3 is 3.6mm.
The present invention operation principle be：When plane four-arm spiral antenna four distributing points phase meet 0 °, 180 °,
0 °, 180 ° } when work in secondary mould, antenna pattern is conelike beam.Add cone boss and by metal in metal back of the body bottom of chamber portion
Cup cavity wall is optimized for cup-shaped structure, and antenna can realize in-phase stacking so as to improve antenna gain in whole working frequency range.
The dielectric passivation of antenna can have surface wave, and loading some metal patches in dielectric passivation upper surface periphery can be to surface
Ripple plays certain effect of guiding into, while the energy that metal patch will be coupled into radiates again, improves the spoke at the low elevation angle of antenna
Penetrate performance.
Further detailed description is done to the present invention with reference to embodiment.
Embodiment 1
With reference to Fig. 1, a kind of ultra wide band conelike beam antenna based on plane four-arm spiral antenna in the present embodiment, including it is flat
Face four-arm spiral antenna radiates body 1, metal cup-shaped chamber 2, dielectric passivation 4 and is printed on the upper surface of dielectric passivation 4
Metal patch 3, the plane four-arm spiral antenna radiation body 1 is arranged on the lower surface of dielectric passivation 4, and is located at metal cup
Directly over shape chamber 2, the inner chamber top of the metal cup-shaped chamber 2 is divided into cylinder, and bottom is divided into back taper, and metal cup-shaped chamber 2
Bottom is provided with a cone boss.Metal patch 3 is along the upper surface outer equidistantly distributed of circular media coating 4, and each metal
The distance at paster 3 to the center of dielectric passivation 4 is equal.The girth of plane four-arm spiral antenna radiation body 1 is less than Antenna Operation
Two times of wavelength of frequency range lowest frequency.
With reference to shown in Fig. 1, the radius R of the plane four-arm spiral antenna radiation body 1 in the present embodimentLFor 16mm.Metal
The total height H of cup back of the body chamber 2 is 14mm, bore 2*R0=31mm, the internal diameter of bottom is 2*r2=28mm, lower part back taper
The height h of shape inner chamber2For 6mm, the height h of the cone boss of metal cup-shaped back of the body chamber 2 bottom1For 9mm, half at the top of cone boss
Footpath r0For 1mm, the radius r of cone boss bottom1For 11mm.The thickness t of dielectric passivation 4 is 1mm, and radius Rd is 25mm, thereon
The length of side p of the square metal paster 3 of surface printing is 3.6mm.
A kind of ultra wide band conelike beam antenna emulation based on plane four-arm spiral antenna is public using ANSYS in the present embodiment
The three-dimensional structure electromagnetic simulation software HFSS of department.It is illustrated in figure 2 the standing wave curve of inventive antenna emulation and traditional back cavity type
The contrast of the standing wave curve of plane four-arm spiral antenna emulation, it is seen that antenna standing wave can be maintained at 1.8 in 8-12GHz frequency range
Below.Antenna pattern and traditional arm plane spiral shell of back cavity type four when the frequency for being illustrated in figure 3 inventive antenna emulation is 8GHz
Revolve the contrast of the antenna pattern of antenna emulation, it is seen that the peak gain of traditional arm flat helical antenna of back cavity type four is
3.65dB, beam angle of the gain higher than 0dB is ± (16 ° -65 °)；The present invention is a kind of super based on plane four-arm spiral antenna
The peak gain of broadband conelike beam antenna is 4.20dB, and beam angle of the gain higher than 0dB is ± (15 ° -76 °).Such as Fig. 4 institutes
When the frequency for being shown as a kind of ultra wide band conelike beam antenna emulation based on plane four-arm spiral antenna of the invention is 10GHz, spoke
Penetrate the contrast of directional diagram and the antenna pattern of traditional arm flat helical antenna of back cavity type four emulation, it is seen that traditional arm of back cavity type four
The peak gain of flat helical antenna is 4.53dB, and beam angle of the gain higher than 0dB is ± (13 ° -68 °)；It is of the invention a kind of
The peak gain of ultra wide band conelike beam antenna based on plane four-arm spiral antenna is 4.41dB, and gain is higher than 0dB wave beam
Width is ± (15 ° -77 °).Antenna pattern is carried on the back with tradition when the frequency for being illustrated in figure 5 inventive antenna emulation is 12GHz
The contrast of the antenna pattern of the arm flat helical antenna of cavate four emulation, it is seen that the peak of traditional arm flat helical antenna of back cavity type four
Value gain is 5.08dB, and beam angle of the gain higher than 0dB is ± (14 ° -67 °)；The peak gain of inventive antenna is
5.23dB, beam angle of the gain higher than 0dB is ± (14 ° -72 °).Be illustrated in figure 6 inventive antenna emulation at the elevation angle
The song that the gain of the curve that gain changes with frequency at 75 ° and the emulation of traditional arm flat helical antenna of back cavity type four changes with frequency
The contrast of line, it is seen that gain of the inventive antenna at 75 ° of the elevation angle is higher than the increasing of traditional arm flat helical antenna of back cavity type four
Benefit, wherein low-frequency range effect is more apparent, and gain improves about 2dB, and high-band gain improves about 1dB.
From the foregoing, it will be observed that the ultra wide band conelike beam antenna based on plane four-arm spiral antenna of the present invention, by using improvement
The metal cup-shaped chamber of type replaces traditional quarter-wave back of the body chamber, and it is wide that antenna can obtain broader wave beam in whole working frequency range
Degree, while loading is printed with the dielectric passivation of metal patch and can further improve radiativity of the antenna at the low elevation angle on antenna
Energy.The ultra wide band conelike beam antenna based on plane four-arm spiral antenna of the present invention, there is ultra wide band, broad beam, structure letter
Singly, the advantages that easy to process, different hair working frequency range can be applied to by the scaling of structural parameters.
Claims (8)
1. a kind of ultra wide band conelike beam antenna based on plane four-arm spiral antenna, it is characterised in that including the arm spiral shell of plane four
Revolve aerial radiation body [1], metal cup-shaped chamber [2], dielectric passivation [4] and be printed on dielectric passivation [4] upper surface
Metal patch [3], the plane four-arm spiral antenna radiation body [1] is arranged on the lower surface of dielectric passivation [4], and is located at
Directly over metal cup-shaped chamber [2], the inner chamber top of the metal cup-shaped chamber [2] is divided into cylinder, and bottom is divided into back taper, and gold
Category cup-shaped cavity [2] bottom is provided with a cone boss, and the cone boss small end face is stretched in metal cup-shaped chamber [2], cone boss
Overlapped with the center line of metal cup-shaped chamber [2].
2. the ultra wide band conelike beam antenna according to claim 1 based on plane four-arm spiral antenna, it is characterised in that
The metal patch [3] is along circular media coating [4] upper surface outer equidistantly distributed, and each metal patch [3] is arrived and is situated between
The distance at matter coating [4] center is equal.
3. the ultra wide band conelike beam antenna according to claim 1 based on plane four-arm spiral antenna, it is characterised in that
The girth of plane four-arm spiral antenna radiation body [1] is less than two times of wavelength of Antenna Operation frequency range lowest frequency.
4. the ultra wide band conelike beam antenna according to claim 1 based on plane four-arm spiral antenna, it is characterised in that
The internal diameter of metal cup-shaped chamber [2] bottom is less than the bore of metal cup-shaped chamber [2].
5. the ultra wide band conelike beam antenna based on plane four-arm spiral antenna according to claim 1 or 4, its feature exist
In the total height H of metal cup-shaped back of the body chamber [2] is 14mm, bore 2*R0=31mm, the internal diameter of bottom is 2*r2=28mm, under
The height h of part back taper inner chamber2For 6mm, the height h of the cone boss of metal cup-shaped back of the body chamber [2] bottom1It is convex for 9mm, taper
Radius r at the top of platform0For 1mm, the radius r of cone boss bottom1For 11mm.
6. the ultra wide band conelike beam antenna according to claim 1 based on plane four-arm spiral antenna, it is characterised in that
The diameter of the dielectric passivation [4] is more than the diameter of plane four-arm spiral antenna radiation body [1].
7. the ultra wide band conelike beam antenna according to claim 1 based on plane four-arm spiral antenna, it is characterised in that
The radius R of the plane four-arm spiral antenna radiation body [1]LFor 16mm.
8. the ultra wide band conelike beam antenna according to claim 1 based on plane four-arm spiral antenna, it is characterised in that
The thickness t of the dielectric passivation [4] is 1mm, and radius Rd is 25mm, thereon the side of the square metal paster [3] of surface printing
Long p is 3.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710737234.8A CN107634326A (en) | 2017-10-19 | 2017-10-19 | A kind of ultra wide band conelike beam antenna based on plane four-arm spiral antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710737234.8A CN107634326A (en) | 2017-10-19 | 2017-10-19 | A kind of ultra wide band conelike beam antenna based on plane four-arm spiral antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107634326A true CN107634326A (en) | 2018-01-26 |
Family
ID=61101391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710737234.8A Pending CN107634326A (en) | 2017-10-19 | 2017-10-19 | A kind of ultra wide band conelike beam antenna based on plane four-arm spiral antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107634326A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594683A (en) * | 2021-08-10 | 2021-11-02 | 西安电子科技大学 | Quadrifilar helix antenna based on multiple loading structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101174732A (en) * | 2007-10-30 | 2008-05-07 | 北京卫星信息工程研究所 | Broad-band back-reflection helical antenna |
| CN101436715A (en) * | 2008-12-05 | 2009-05-20 | 邢红兵 | Dual polarization back cavity type radiating antenna |
| US20090289868A1 (en) * | 2008-05-20 | 2009-11-26 | Roke Manor Research Limited | Ground plane |
| JP2011015203A (en) * | 2009-07-02 | 2011-01-20 | National Institute Of Information & Communication Technology | Curved surface reflector antenna and position measuring system using the same |
| KR101619375B1 (en) * | 2016-01-06 | 2016-05-10 | 엘아이지넥스원 주식회사 | Antenna for active - passive seeker |
| US9437932B1 (en) * | 2011-09-09 | 2016-09-06 | The United States Of America As Represented By The Secretary Of The Navy | Two-arm delta mode spiral antenna |
-
2017
- 2017-10-19 CN CN201710737234.8A patent/CN107634326A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101174732A (en) * | 2007-10-30 | 2008-05-07 | 北京卫星信息工程研究所 | Broad-band back-reflection helical antenna |
| US20090289868A1 (en) * | 2008-05-20 | 2009-11-26 | Roke Manor Research Limited | Ground plane |
| CN101436715A (en) * | 2008-12-05 | 2009-05-20 | 邢红兵 | Dual polarization back cavity type radiating antenna |
| JP2011015203A (en) * | 2009-07-02 | 2011-01-20 | National Institute Of Information & Communication Technology | Curved surface reflector antenna and position measuring system using the same |
| US9437932B1 (en) * | 2011-09-09 | 2016-09-06 | The United States Of America As Represented By The Secretary Of The Navy | Two-arm delta mode spiral antenna |
| KR101619375B1 (en) * | 2016-01-06 | 2016-05-10 | 엘아이지넥스원 주식회사 | Antenna for active - passive seeker |
Non-Patent Citations (3)
| Title |
|---|
| MIKAL ASKARIAN AMIRI: "《Gain and Bandwidth Enhancement of a Spiral Antenna Using a Circularly Symmetric HIS》", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS 》 * |
| XUXU GE ETC: "《An improved hat-shaped cavity-backed Archimedean spiral antenna》", 《ISAPE2012》 * |
| 冯桂荣等: "《低剖面宽带表面波天线》", 《2017年全国微波毫米波会议论文集（中册）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594683A (en) * | 2021-08-10 | 2021-11-02 | 西安电子科技大学 | Quadrifilar helix antenna based on multiple loading structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105490016B (en) | Broadband beam antenna based on resonant mode reflector | |
| CN104810615B (en) | A kind of broadband low section helical antenna for loading parasitic patch | |
| CN107369904A (en) | A kind of low section high-gain ultra-wideband flat helical antenna | |
| CN106450738B (en) | High-gain double-circle polarization plate aerial | |
| CN103490153A (en) | Subminiature ultra-wide-band helical antenna | |
| CN104852126B (en) | A kind of small-sized conical spiral antenna in high efficiency broadband | |
| CN104733870A (en) | Circular polarization broadband helical antenna | |
| CN106549233A (en) | The Antonio Vivaldi circular array antenna of the horizontally polarized omnidirectional connecting-type of ultra broadband | |
| CN107086361A (en) | A kind of high-gain is to opening up Vivaldi antennas | |
| CN109768380A (en) | Ultralow section paster antenna, wireless communication system based on three mould resonance | |
| CN109687132A (en) | A kind of low section vertical polarization ultra-wideband omni-directional antenna | |
| CN107634326A (en) | A kind of ultra wide band conelike beam antenna based on plane four-arm spiral antenna | |
| CN108023175A (en) | Minimize characteristics of conformal micro-strip array antenna | |
| CN207677081U (en) | Broadband circularly polarized antenna based on annular patch | |
| CN107359410A (en) | Using extra media layer loading technique and the edges corrugated Novel balance Vivaldi antennas of mixed type | |
| CN206673108U (en) | A kind of oval gap ultra wide planar slot antenna with hierarchic structure | |
| CN109994829A (en) | Broadband circularly polarized antenna | |
| CN204103045U (en) | A kind of quadrangular pyramid trumpet array antenna for 2.65GHz ~ 2.91GHz frequency range | |
| CN210129585U (en) | Miniaturized ultra-wideband planar spiral antenna with absorption cavity | |
| CN108134206A (en) | Step ripple Terahertz electromagnetic horn | |
| CN107799888A (en) | A kind of double frequency high-gain paster antenna | |
| CN208986191U (en) | Compact dual-frequency ultra-wideband omni-directional antenna | |
| CN206992300U (en) | The double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° | |
| CN105071046B (en) | A kind of loaded type Ka wave band electromagnetic horns based on substrate integration wave-guide | |
| CN106450710A (en) | Broadband antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180126 |