CN106549227A - A kind of dual-band dual-circular polarization common reflector - Google Patents
A kind of dual-band dual-circular polarization common reflector Download PDFInfo
- Publication number
- CN106549227A CN106549227A CN201610913896.1A CN201610913896A CN106549227A CN 106549227 A CN106549227 A CN 106549227A CN 201610913896 A CN201610913896 A CN 201610913896A CN 106549227 A CN106549227 A CN 106549227A
- Authority
- CN
- China
- Prior art keywords
- dual
- metal patch
- arm
- band
- band filter
- 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
Classifications
-
- 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
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
-
- 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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
The present invention discloses a kind of dual-band dual-circular polarization common reflector, the medium substrate (1) of metal ground plate (2) is provided with including lower surface, the upper surface of the medium substrate (1) is provided with T-shaped knot (3) and the first metal patch (4), second metal patch (5), the end of the trunk (31) of T-shaped knot (3) is located at the edge of medium substrate (1), as feed mouth, first arm (32) of T-shaped knot (3) is connected with the first metal patch (4) by the first band filter (6), second arm (33) of T-shaped knot (3) is connected with the second metal patch (5) by the second band filter (7).The dual-band dual-circular polarization common reflector of the present invention is good to the isolation of close frequencies, it is easy to organize battle array.
Description
Technical field
The invention belongs to radio antenna technical field, the good dual-band dual-circular polarization of particularly a kind of frequency isolation degree is altogether
Aperture antenna.
Background technology
Descending, the upward signal of the sending and receiving antenna of modern wireless communication systems works in different frequency.To reduce system body
Product, realizes miniaturization, and a kind of method is that dual-mode antenna is integrated in approximately the same plane.Common reflector is such as adopted, be will be operate in
The sending and receiving antenna of different frequency is integrated on same bore.
Existing double frequency common reflector such as Chinese invention patent application " monolayer double frequency round polarized micro-strip array antenna " (application
Number：NO.201410649033.9, publication date：2015.2.4 it is) described, including monolayer microwave-medium substrate, double frequency round polarized radiation
The micro-strip power division network of unit and double frequency shared.The circular polarization radiation paster that double frequency round polarized radiating element is worked independently by two
Connected and composed by micro-strip.Which adopts microstrip-fed, it is easy to constitute the double frequency round polarized antenna of high-gain, it is to avoid complicated is more
Layer feed structure, realizes dual-band dual-circular polarization transmitting-receiving public.
But which has the drawback that：When cut-off frequency is nearer with operating frequency, due to feeding microstrip line cut-off characteristicses
Gently, frequency isolation degree is poor.
The content of the invention
It is an object of the invention to provide a kind of dual-band dual-circular polarization common reflector, good to the isolation of close frequencies,
It is easy to a group battle array.
The technical solution for realizing the object of the invention is：
A kind of dual-band dual-circular polarization common reflector, including lower surface is provided with the medium substrate of metal ground plate, is given an account of
The upper surface of matter substrate is provided with T-shaped knot and the first metal patch, the second metal patch, and the end of the trunk of the T-shaped knot is located at
The edge of medium substrate, used as feed mouth, the first arm of T-shaped knot is connected with the first metal patch by the first band filter, T
Second arm of shape knot is connected with the second metal patch by the second band filter.
Compared with prior art, its remarkable advantage is the present invention：
1st, frequency isolation degree is good：The present invention connects two using the band filter with precipitous cut-off characteristicses and works independently
Circular polarization radiation paster, can realize very well under close frequencies isolation；
2nd, it is easy to a group battle array：Using miniaturization band filter, by rational deployment, the area of unit occupancy is reduced, easily
In composition aerial array.
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Description of the drawings
Fig. 1 is the structural representation of dual-band dual-circular polarization common reflector of the present invention.
Fig. 2 is the structural representation of band filter in Fig. 1.
Physical dimension schematic diagrams of the Fig. 3 for Fig. 1.
Physical dimension schematic diagrams of the Fig. 4 for Fig. 2.
Fig. 5 is the structural representation of the single circular polarization microstrip antenna for not adding band filter.
Fig. 6 is the structural representation of the single circular polarization microstrip antenna for loading band filter.
Fig. 7 is that the single paster for not adding band filter is schemed using the S11 emulated by HFSS.
Fig. 8 is that the single paster for loading band filter is schemed using the S11 emulated by HFSS.
Fig. 9 is the S11 figures that inventive antenna emulation is obtained.
Figure 10 is that inventive antenna emulates the axle ratio for obtaining with frequency variation diagram.
Figure 11 is the left-handed and right-handed circular polarization E faces directional diagram for emulating the antenna for obtaining under 8.2GHz frequencies.
Figure 12 is the left-handed and right-handed circular polarization E faces directional diagram for emulating the antenna for obtaining under 8.6GHz frequencies.
Figure 13 is current distributing figure of the inventive antenna in 8.2GHz operation at frequencies.
Figure 14 is current distributing figure of the inventive antenna in 8.6GHz operation at frequencies.
Figure 15 is the aerial array schematic diagram using dual-band dual-circular polarization common reflector of the present invention composition.
Figure 16 is the curve that 4 × 4 array reflection coefficient that emulation is obtained change with frequency.
Figure 17 is the curve that 4 × 4 array axes ratios that emulation is obtained change with frequency.
Figure 18 is antenna in f1E faces directional diagram under=8.2GHz frequencies.
Figure 19 is antenna in f2E faces directional diagram under=8.6GHz frequencies.
In figure, metal ground plate 2, medium substrate 1, T-shaped knot 3, trunk 31, the first arm 32, the second arm 33, the first metal patch
Piece 4, the second metal patch 5, the first band filter 6, the second band filter 7, the first rectangular aperture 8, the second rectangular aperture
9。
Specific embodiment
As shown in figure 1, dual-band dual-circular polarization common reflector of the present invention,
The medium substrate 1 of metal ground plate 2 is provided with including lower surface, the upper surface of the medium substrate 1 is provided with T-shaped knot 3
With the first metal patch 4, the second metal patch 5, the end of the trunk 31 of the T-shaped knot 3 is made located at the edge of medium substrate 1
To feed mouth, the first arm 32 of T-shaped knot 3 is connected with the first metal patch 4 by the first band filter 6, and the second of T-shaped knot 3
Arm 33 is connected with the second metal patch 5 by the second band filter 7.
As shown in figure 1, the first rectangular aperture 8 is provided with first metal patch 4, on the second metal patch 5, is provided with
Two rectangular apertures 9,9 irrelevancy row of first rectangular aperture 8 and the second rectangular aperture.
There is the rectangular aperture 8,9 for rotating to an angle to realize circular polarisation on two metal patches.
First arm 32 and the second arm 33 of T-shaped knot 3 is constituted by microstrip line, and the micro-strip line length of the first arm 32 makes the
The signal of two metal patches, 5 operating frequency is not turned on for the first arm 32, and the micro-strip line length of the second arm 33 pastes the first metal
The signal of 4 operating frequency of piece is not turned on for the second arm 32.
As shown in Fig. 2 first band filter 6 and the second band filter 7 are precipitous cut-off type bandpass filtering
Device.
The open stub of two and feeder line same widths is each extended over out by feeder line two ends, four open stubs are common
Annulus is bent into, through the slit that there is a rotation special angle in circle ring center, band filter 67 is formed.
Four open stubs 61,62,63,64, structure is as shown in Figure 2.Wherein stub 61 and 62, stub 63 and 64
Partner semi-annular shape hairpin resonator, staggered relatively at feeder line two ends with feeder line at an angle.
It is illustrated in figure 3 the scale diagrams of dual-band dual-circular polarization common reflector of the present invention.
The operating frequency of metal patch 4 is f1, metal patch 5 operating frequency be f2。
There is the microstrip line of one section of length-specific between the band filter and T-shaped knot.With left side microstrip line 32 in Fig. 1 it is
Example, adjusts the length of microstrip line 32 so that in operating frequency f of metal patch 52When from T-shaped tie port to 4 side of metal patch
The open-circuit condition that high resistant is presented to looking, metal patch 4 is in frequency f2Non-radiating.In the same manner, the length for adjusting microstrip line 33 makes gold
Category paster 5 is in frequency f1Non-radiating.It is possible thereby to realize that two pasters are worked respectively, it is independent of each other.
For f1、f2Frequency adjusts micro-strip line length from closer situation is obtained, only and can not realize two pasters well
Between isolation, therefore consider on the basis of duplexer add wave filter.Loading after the metal patch 4,5 uses Stepped Impedance
The band filter of ring resonator, as shown in Figure 5.Feeder line two ends each extend over out the open stub of two same widths, and two
There is the gap of one fixed width between the open stub that end is extended, four open stubs are bent into round-shaped composition jointly
Band filter 6,7.In order to be able to normal work is in two frequencies of each self-corresponding paster, frequency isolation, two band logicals are realized
The size of wave filter 6,7 is different.
The impedance of described power feed inputs mouth is 160 ohm, and the characteristic impedance of the microstrip transmission line is 160 Europe
Nurse.
The present invention is described in further detail with reference to instantiation.
Embodiment 1：
The isolation performance of band filter is verified by taking single metal paster as an example.It is illustrated in figure 5 and does not load bandpass filtering
The metal patch of device, Fig. 6 show the metal patch after loading band filter.Relevant dimensions as shown in Figure 3, Figure 4, day
Line operating frequency f1=8.2GHz, the dielectric-slab for being adopted are dielectric constant 2.2, the Rogers5880 sheet materials of thickness 0.787mm.
With reference to Fig. 4 and Fig. 5, the metal patch is as follows with the key dimension parameter of band filter：
W0=0.2mm, w1=11.3mm, w11=0.5mm, w3=0.3mm, w4=0.2mm, w5=0.2mm, l1=
3.95mm, I1=1mm, r1=2.1mm, r2=1.65mm.
This example antenna is the modeling and simulating in electromagnetic simulation software HFSS.11.Fig. 7 is not add the anti-of band filter
Coefficient analogous diagram is penetrated, Fig. 8 is the reflection coefficient analogous diagram after loading band filter.As can be seen that compare
Reflection coefficient curve, after loading band filter, antenna is provided with substantially precipitous cut-off frequency response, in frequency f2=
At 8.6GHz S11 be -0.28dB, compare -4dB when being not added with wave filter, its isolation performance be improved significantly.
Embodiment 2：
The Shared aperture dual-band dual-circular polarization cellular construction of present invention loading band filter is as shown in figure 1, relevant size rule
Lattice as shown in Figure 3, Figure 4, operating frequency of antenna f1=8.2GHz, f2=8.6GHz, the dielectric-slab for being adopted for dielectric constant 2.2,
The Rogers5880 sheet materials of thickness 0.787mm.With reference to Fig. 5 and Fig. 6, the main chi of the Shared aperture double-frequency double-circularly-poantenna antenna unit
Very little parameter is as follows：
W0=0.2mm, w1=11.3mm, w2=10.7mm, w11=0.5mm, w21=0.5mm, w3=0.3mm, w4=
0.2mm, w5=0.2mm, w6=0.3mm, w7=0.2mm, w8=0.2mm, l1=3.95mm, l2=4mm,I 1=1mm, i2=1.1mm, d1=9mm, d2=7.2mm, r1=2.1mm, r2=1.65mm, r3
=1.94mm, r4=1.5mm.
Fig. 9 is to emulate the reflection coefficient for obtaining with frequency variation curve, and Figure 10 is that the axle ratio that emulation is obtained changes with frequency
Curve, Figure 11 are antennas in f1Left-handed and right-handed circular polarization E faces directional diagram under frequency, Figure 12 is antenna in f2A left side under frequency
Rotation and right-handed circular polarization E faces directional diagram.In f1S11=-22dB during=8.2GHz, axle mainly radiate dextrorotation than AR=0.97dB
Circularly polarised wave；In f2S11=-25dB during=8.6GHz, axle are than AR=1.15dB, main to radiate left-hand circular polarization ripple.Figure 13 is
Antenna is in f1Current distributing figure during operation at frequencies, Figure 14 are antennas in f2Current distributing figure during operation at frequencies.From electric current
Scattergram can be seen, in f1And f2Under frequency, only corresponding paster radiation, another paster do not work, and two pasters are in work
Isolation well is realized at working frequency.
Embodiment 3：
In order to verify the effectiveness of present invention group battle array, it is 4 × 4 groups of battle arrays to select array scale, using coaxial probe from centre
Feed.Consideration in antenna size is reduced, antenna arrangement is as shown in figure 15.In order to avoid graing lobe, unit interval is set to
30mm.Dielectric-slab adopt dielectric constant for 2.2 Rogers5880 sheet materials, thickness is 0.787mm, size be 140mm ×
140mm.Operating frequency of antenna f1=8.2GHz, f2=8.6GHz.The dimensional parameters obtained after optimization are：
W0=0.2mm, w1=11.34mm, w2=10.66mm, w11=0.5mm, w21=0.5mm, w3=0.3mm, w4
=0.2mm, w5=0.2mm, w6=0.3mm, w7=0.2mm, w8=0.2mm, l1=2.9mm, l2=4mm,I 1=1mm, i2=1.1mm, d1=9mm, d2=7.2mm, r1=2.1mm, r2=1.65mm, r3
=1.94mm, r4=1.5mm.
Figure 16 is the curve that 4 × 4 array reflection coefficient that emulation is obtained change with frequency, and Figure 17 is 4 × 4 that emulation is obtained
The curve that array axes ratio changes with frequency, Figure 18 is antenna in f1E faces directional diagram under=8.2GHz frequencies, Figure 19 is that antenna exists
f2E faces directional diagram under=8.6GHz frequencies.In f1S11=-21.6dB during=8.2GHz, axle are than AR=0.92dB, main to radiate
Right-handed circular polarization ripple, gain 19.65dB；In f2S11=-24.5dB during=8.6GHz, than AR=0.11dB, main radiation is left for axle
Hand circular polarization ripple gain 19.75dB.Can see that, after composition array, antenna is still fine in the isolation of two frequencies, shows
The Shared aperture dual-band dual-circular polarization microband antenna unit of the present invention is easy to constitute aerial array.
In sum, a kind of loading band filter of the invention realizes that the Shared aperture dual-band dual-circular polarization of frequency isolation is micro-
Band antenna element, using two pasters for working in different frequency and polarization, two pasters composition that is connected can be considered as two
Branch road in parallel, two pasters can be with individually designed realizing specific function；Using the band filter of precipitous cut-off characteristicses
And using microstrip line stationary wave characteristic realizing the isolation between the paster antenna of close frequencies.In addition, wave filter is compact
Structure is easy to a group battle array, can be advantageously applied in Shared aperture dual-band antenna.
Claims (4)
1. a kind of dual-band dual-circular polarization common reflector, it is characterised in that：
The medium substrate (1) of metal ground plate (2) is provided with including lower surface, the upper surface of the medium substrate (1) is provided with T-shaped knot
(3) and the first metal patch (4), the second metal patch (5), the end of the trunk (31) of T-shaped knot (3) are located at medium substrate
(1) edge, used as feed mouth, first arm (32) of T-shaped knot (3) is by the first band filter (6) and the first metal patch
(4) it is connected, second arm (33) of T-shaped knot (3) is connected with the second metal patch (5) by the second band filter (7).
2. common reflector according to claim 1, it is characterised in that：First is provided with first metal patch (4)
Rectangular aperture (8), is provided with the second rectangular aperture (9), first rectangular aperture (8) and the second square on the second metal patch (5)
Shape gap (9) irrelevancy row.
3. common reflector according to claim 1, it is characterised in that：First arm (32) and second of T-shaped knot (3)
Arm (33) is constituted by microstrip line, and the micro-strip line length of the first arm (32) makes the signal pair of the second metal patch (5) operating frequency
Be not turned in the first arm (32), the micro-strip line length of the second arm (33) make the signal of the first metal patch (4) operating frequency for
Second arm (33) is not turned on.
4. common reflector according to claim 1, it is characterised in that：First band filter (6) and the second band
Bandpass filter (7) is precipitous cut-off type band filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913896.1A CN106549227A (en) | 2016-10-20 | 2016-10-20 | A kind of dual-band dual-circular polarization common reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913896.1A CN106549227A (en) | 2016-10-20 | 2016-10-20 | A kind of dual-band dual-circular polarization common reflector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106549227A true CN106549227A (en) | 2017-03-29 |
Family
ID=58391970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610913896.1A Pending CN106549227A (en) | 2016-10-20 | 2016-10-20 | A kind of dual-band dual-circular polarization common reflector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106549227A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508038A (en) * | 2017-07-13 | 2017-12-22 | 中国人民解放军空军工程大学 | Work in the double-frequency micro-strip antenna battle array and its design method of C-band and X-band |
| CN114552220A (en) * | 2022-03-08 | 2022-05-27 | 重庆邮电大学 | Single-port double-frequency double-circular polarization filtering antenna based on microstrip transmission line feed and wireless communication equipment |
| EP4246722A4 (en) * | 2020-12-08 | 2024-05-29 | Huawei Tech Co Ltd | Antenna |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007318714A (en) * | 2006-05-23 | 2007-12-06 | Korea Electronics Telecommun | Multiple-mode open-loop type clock extraction apparatus |
| KR20110118280A (en) * | 2010-04-23 | 2011-10-31 | 인천대학교 산학협력단 | Miniaturized zero-order-resonant metamaterial bandpass filter for the uwb lower-half-band with open-stub inserted non-uniform interdigital coupled lines |
| CN202058840U (en) * | 2010-12-23 | 2011-11-30 | 天津职业技术师范大学 | Triangular open loop coupling band-pass filter |
| CN103840273A (en) * | 2012-11-23 | 2014-06-04 | 意法半导体(克洛尔2)公司 | Antenna circuit using multiple independent antennas simultaneously through a single feed |
| CN104332713A (en) * | 2014-11-14 | 2015-02-04 | 南京理工大学 | Single-layer double-frequency circularly polarized micro-strip array antenna |
| CN204375893U (en) * | 2014-12-23 | 2015-06-03 | 哈尔滨黑石科技有限公司 | Based on the ultra-broadband dual-frequency band pass filter of bimodulus stepped impedance counterfoil resonator |
| CN105789774A (en) * | 2014-12-23 | 2016-07-20 | 哈尔滨黑石科技有限公司 | Ultra wideband dual-frequency pass-band filter based on stepped impedance resonator |
| CN105789775A (en) * | 2014-12-23 | 2016-07-20 | 哈尔滨黑石科技有限公司 | Ultra wideband dual-frequency pass-band filter based on dual-mode stepped impedance stud resonator |
-
2016
- 2016-10-20 CN CN201610913896.1A patent/CN106549227A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007318714A (en) * | 2006-05-23 | 2007-12-06 | Korea Electronics Telecommun | Multiple-mode open-loop type clock extraction apparatus |
| KR20110118280A (en) * | 2010-04-23 | 2011-10-31 | 인천대학교 산학협력단 | Miniaturized zero-order-resonant metamaterial bandpass filter for the uwb lower-half-band with open-stub inserted non-uniform interdigital coupled lines |
| CN202058840U (en) * | 2010-12-23 | 2011-11-30 | 天津职业技术师范大学 | Triangular open loop coupling band-pass filter |
| CN103840273A (en) * | 2012-11-23 | 2014-06-04 | 意法半导体(克洛尔2)公司 | Antenna circuit using multiple independent antennas simultaneously through a single feed |
| CN104332713A (en) * | 2014-11-14 | 2015-02-04 | 南京理工大学 | Single-layer double-frequency circularly polarized micro-strip array antenna |
| CN204375893U (en) * | 2014-12-23 | 2015-06-03 | 哈尔滨黑石科技有限公司 | Based on the ultra-broadband dual-frequency band pass filter of bimodulus stepped impedance counterfoil resonator |
| CN105789774A (en) * | 2014-12-23 | 2016-07-20 | 哈尔滨黑石科技有限公司 | Ultra wideband dual-frequency pass-band filter based on stepped impedance resonator |
| CN105789775A (en) * | 2014-12-23 | 2016-07-20 | 哈尔滨黑石科技有限公司 | Ultra wideband dual-frequency pass-band filter based on dual-mode stepped impedance stud resonator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508038A (en) * | 2017-07-13 | 2017-12-22 | 中国人民解放军空军工程大学 | Work in the double-frequency micro-strip antenna battle array and its design method of C-band and X-band |
| EP4246722A4 (en) * | 2020-12-08 | 2024-05-29 | Huawei Tech Co Ltd | Antenna |
| CN114552220A (en) * | 2022-03-08 | 2022-05-27 | 重庆邮电大学 | Single-port double-frequency double-circular polarization filtering antenna based on microstrip transmission line feed and wireless communication equipment |
| CN114552220B (en) * | 2022-03-08 | 2023-06-27 | 重庆邮电大学 | Single-port double-frequency double-circular polarization filter antenna based on microstrip transmission line feed and wireless communication equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Haraz et al. | Design of a 28/38 GHz dual-band printed slot antenna for the future 5G mobile communication Networks | |
| CN106252858B (en) | S/X wave band Shared aperture miniaturization flat plane antenna | |
| CN106058447B (en) | A kind of broadband and wide wave beam circularly polarized dielectric resonator antenna suitable for X-band | |
| CN208690490U (en) | A kind of circular polarized antenna slotted over the ground based on co-planar waveguide | |
| CN109509963B (en) | Notch dual-polarized base station antenna | |
| CN104882677B (en) | Difference gap mimo antenna with high cmrr | |
| CN104901006B (en) | Multiband micro-strip mimo antenna based on fractal structure | |
| CN107069205A (en) | Wideband low section circular polarisation electromagnetic dipole antenna | |
| US20130120209A1 (en) | Systems and methods providing planar antennas including reflectors | |
| CN106549227A (en) | A kind of dual-band dual-circular polarization common reflector | |
| CN108631057A (en) | Yagi aerial with filtering characteristic | |
| CN207925681U (en) | A kind of three frequency paster antennas for penetrating characteristic with side | |
| CN114639956A (en) | Microwave and millimeter wave large-frequency-ratio common-aperture antenna combining MIMO technology | |
| CN107799888B (en) | Dual-frequency high-gain patch antenna | |
| CN111541018B (en) | High-gain steep filtering fusion duplex integrated antenna | |
| Iizasa et al. | High gain 4× 4 slot dipole antenna array in the 5GHz band | |
| CN208674362U (en) | A kind of compact microstrip double frequency antenna | |
| CN108649339B (en) | Self-phase-shift dual-frequency dual-circular polarization crossed dipole antenna | |
| CN101847785A (en) | Dual-frequency planar microstrip antenna | |
| KR20240065276A (en) | Multi-band slot-combined antenna | |
| CN115939782A (en) | W-band rotary type circularly polarized magnetoelectric dipole antenna array | |
| Li et al. | An enhanced frequency and radiation pattern reconfigurable antenna for portable device applications | |
| CN215008575U (en) | Dual-frequency dual-polarization dielectric resonant antenna for 5G communication and mobile terminal equipment | |
| CN106816704B (en) | The three port mimo antennas based on aperture slots | |
| Ramya et al. | Design and Analysis of microstrip patch array antenna for WLAN applications |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170329 |
|
| WD01 | Invention patent application deemed withdrawn after publication |