CN204668465U - Antenna and the multiplexing device of radio frequency OAM wave beam is produced based on planar microstrip loop configuration - Google Patents
Antenna and the multiplexing device of radio frequency OAM wave beam is produced based on planar microstrip loop configuration Download PDFInfo
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- CN204668465U CN204668465U CN201520314145.9U CN201520314145U CN204668465U CN 204668465 U CN204668465 U CN 204668465U CN 201520314145 U CN201520314145 U CN 201520314145U CN 204668465 U CN204668465 U CN 204668465U
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Abstract
The utility model discloses a kind of antenna producing radio frequency OAM wave beam based on planar microstrip loop configuration, and provide a kind of radio frequency OAM wave beam multiplexing device on this basis.The utility model, for structure OAM Multiplexing wireless communication system, is accelerated the practical of OAM Multiplexing wireless communication, is had very important significance.The utility model utilizes the power splitter that can realize 90 ° of phase shifts improved as feed distribution networks, for the wave source excitation port of two on annular microstrip antenna provides phase difference to be the wave source of 90 °, row ripple is formed in annulus shaped microstrip, be radiated in air and produce radio frequency OAM wave beam, above-mentioned antenna structure makes simple, is easy to integrated; Multiple annular microstrip antenna is set can obtains a kind of radio frequency OAM wave beam multiplexing device by nested on same medium substrate, thus realize the multiplexing of radio frequency OAM wave beam.
Description
Technical field
The utility model belongs to OAM wireless communication technology field, is specifically related to a kind of antenna producing radio frequency OAM wave beam based on planar microstrip loop configuration.
Background technology
Along with the whole world enters the mobile Internet epoch, the spectral gaps of mobile communication business is day by day serious, and how adopting new multiplex technique to improve the availability of frequency spectrum becomes one of main drive promoting information transmission technology development.Orbital angular momentum (OAM:Orbital Angular Momentum) is multiplexing is a kind of new multiplex technique, divides, space division multiplexing Technical comparing with traditional time-division, frequency division, code, has the advantages such as the high and fail safe of the availability of frequency spectrum is good.
Orbital angular momentum multiplex technique realizes in optical frequencies, and Chinese patent CN104007567A, CN103941405A, CN103487956A etc. introduce the implementation method of orbital angular momentum multiplex technique in optical frequencies, but orbital angular momentum multiplex technique realizes comparatively difficulty at radio frequency band, at present, Chinese patent CN103474776A discloses a kind of method producing radio frequency orbital angular momentum wave beam based on annular traveling wave antenna, demonstrates the feature of the annular traveling wave antenna producing radio frequency OAM wave beam at theoretic, Chinese patent CN103474777A discloses a kind of annular traveling wave antenna of the generation radio frequency OAM wave beam based on metal ring chamber, by cracking at endless metal chamber end face, have two ripple ports in side, metal ring chamber at a distance of quarter turn place and connect metal waveguide as double source excitation port, when inputting same frequency in these two excitation port, the microwave source that phase is positive and negative 90 °, electromagnetic field in metal ring chamber becomes the row wavelength-division cloth circumferentially propagated clockwise or counterclockwise, the place of cracking of wire chamber end face is to space radiation electromagnetic wave again, form a kind of annular traveling wave antenna, but, travelling wave antenna structure disclosed in foregoing invention is complicated, be difficult to make, and it is not easy of integration, be unfavorable for accelerating and promote following radio frequency OAM wave beam high-speed communication development.
Therefore, be badly in need of a kind of structure of research and development simple, be easy to make the integrated antenna that can produce radio frequency OAM wave beam spiral wave beam.
Utility model content
The purpose of this utility model is to provide a kind of antenna based on planar microstrip loop configuration that can produce radio frequency OAM wave beam, and based on the radio frequency OAM wave beam multiplexing device of above-mentioned antenna structure.
The purpose of this utility model realizes like this, comprise the annular microstrip antenna be arranged in first medium base plan, be arranged at the feed distribution networks in second medium base plan, be arranged at the ground plate between first medium substrate and second medium substrate, described annular microstrip antenna is along the circumferential direction respectively arranged with wave source excitation port p1 and wave source excitation port p2, described feed distribution networks comprises phase shift power splitter and the output microstrip line q1 be connected with the output of phase shift power splitter respectively and exports microstrip line q2; Described output microstrip line q1 is connected with wave source excitation port p1 through after ground plate by coaxial probe, and described output microstrip line q2 is connected with wave source excitation port p2 through after ground plate by coaxial probe.
The utility model additionally provides a kind of radio frequency OAM wave beam multiplexing device, described radio frequency OAM wave beam multiplexing device comprises multiple annular microstrip antenna being operated in different working modes, described multiple annular microstrip antenna is arranged on medium substrate jointly in donut mode, and described each annular microstrip antenna is along the circumferential direction provided with two wave source excitation port.
The utility model is for the OAM wireless communication system with huge applications potentiality, propose a kind of antenna based on planar microstrip loop configuration that can produce radio frequency OAM wave beam of simple possible, and provide a kind of radio frequency OAM wave beam multiplexing device on the basis of the above.The utility model, for structure OAM Multiplexing wireless communication system, is accelerated the practical of OAM Multiplexing wireless communication, is had very important significance.The utility model utilizes the power splitter that can realize 90 ° of phase shifts improved as feed distribution networks, for the wave source excitation port of two on annular microstrip antenna provides phase difference to be the wave source of 90 °, row ripple is formed in annular microstrip antenna, be radiated in air and produce radio frequency OAM wave beam, above-mentioned antenna structure makes simple, is easy to integrated; Multiple annular microstrip antenna is set can obtains a kind of radio frequency OAM wave beam multiplexing device by nested on same medium substrate, thus realize the multiplexing of radio frequency OAM wave beam.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of annulus shaped microstrip in the utility model;
Fig. 3 is the structural representation of power splitter in the utility model;
Fig. 4 is the connection diagram of annulus shaped microstrip and power splitter in the utility model;
The antenna of the mode of operation I=3 that Fig. 5 provides for the utility model is at the electric field phase distribution map of space radiation;
The antenna of the mode of operation I=2 that Fig. 6 provides for the utility model is at the electric field phase distribution map of space radiation;
The antenna of the mode of operation I=4 that Fig. 7 provides for the utility model is at the electric field phase distribution map of space radiation;
The structural representation of the radio frequency OAM wave beam multiplexing device that Fig. 8 provides for the utility model;
In figure: 1-first medium substrate, 2-annular microstrip antenna, 3-second medium substrate, 4-phase shift power splitter, 5-ground plate.
Embodiment
Be further described the utility model below in conjunction with accompanying drawing, but must not be limited the utility model by any way, any change done based on the utility model training centre or improvement, all belong to protection range of the present utility model.
As Figure 1-4, the utility model comprises the annular microstrip antenna 2 be arranged in first medium substrate 1 plane, be arranged at the feed distribution networks in second medium substrate 3 plane, be arranged at the ground plate 5 between first medium substrate 1 and second medium substrate 3, described annular microstrip antenna 2 is along the circumferential direction respectively arranged with wave source excitation port p1 and wave source excitation port p2, described feed distribution networks comprises phase shift power splitter 4 and the output microstrip line q1 be connected with the output of phase shift power splitter 4 respectively and exports microstrip line q2; Described output microstrip line q1 is connected with wave source excitation port p1 through after ground plate 5 by coaxial probe, and described output microstrip line q2 is connected with wave source excitation port p2 through after ground plate 5 by coaxial probe.
Distance between the wave source excitation port p1 that described annular microstrip antenna 2 is along the circumferential direction arranged and wave source excitation port p2 is the guide wavelength of the annular microstrip antenna 2 of n ± 1/4 times, and wherein the value of n is integer.
The length of the output microstrip line q1 of described formation feed distribution networks differs the guide wavelength of the output microstrip line q1 of n ± 1/4 times with the length exporting microstrip line q2, wherein the value of n is integer.
Described phase shift power splitter 4 is Wilkinson power divider.
As shown in Figure 6, described radio frequency OAM wave beam multiplexing device comprises multiple annular microstrip antenna being operated in different working modes, described multiple annular microstrip antenna is arranged on medium substrate jointly in donut mode, and described each annular microstrip antenna is along the circumferential direction provided with two wave source excitation port.
embodiment 1
Step one: the microstrip design mode of operation l=3 adopting width ω=2.56mm, the annular microstrip antenna 2 of operating frequency f=2.5GHZ, adopts Rogers 4350B, dielectric constant
the board making first medium substrate 1 of=2.65, thickness h=0.93mm; Wherein the guide wavelength of annular microstrip antenna 2 is
, the girth C of annular microstrip antenna is l times of guide wavelength
, calculate effective dielectric constant according to formula ()
,
(1)
According to wavelength
, calculate and obtain wavelength
, wherein c is the light velocity, and f is operating frequency;
The guide wavelength calculating annular microstrip antenna 2 according to formula (two) is
,
(2)
Calculated by above-mentioned, the guide wavelength of annular microstrip antenna 2
=81.2mm, the girth of annular microstrip antenna 2 is l times of guide wavelength, i.e. C=243.6mm, be arranged at the guide wavelength at a distance of the annular microstrip antenna 2 of 3/4 times between wave source excitation port p1 on annular microstrip antenna 2 and wave source excitation port p2, namely between wave source excitation port p1 and wave source excitation port p2 at a distance of 60.9mm, thus realize the design of annular microstrip antenna 2.
Step 2: be that the output port of the Wilkinson power divider of 1 ~ 4HGZ connects respectively and exports microstrip line q1 and export microstrip line q2 by operating frequency, described output microstrip line q1 and output microstrip line q2 adopts the microstrip design mode of operation l=3 of width ω=2.56mm, the microstrip line of operating frequency f=2.5GHZ makes, adopt Rogers 4350B, dielectric constant
the board making second medium substrate 3 of=2.65, thickness h=0.93mm; The guide wavelength of described output microstrip line q1 is also
, the guide wavelength exporting microstrip line q1 is calculated according to the formula () in step one and formula (two)
=81.2mm, the length difference exported between microstrip line q1 and output microstrip line q2 is adjusted to the guide wavelength of the output microstrip line q1 of 3/4 times, namely export microstrip line q1 specific output microstrip line q2 and extend 60.9mm, thus realize the difference that Wilkinson power divider two output exports 90 °; Then the output load of regulation output microstrip line q2, make to export microstrip line q1, with these two outputs of output microstrip line q2, there is identical output intensity, what adjust two microstrip lines moves towards layout, make two output relative position relations of microstrip line consistent with the position relationship of two wave source excitation port of annulus shaped microstrip, thus realize the design of feed distribution networks.
Step 3: annulus shaped microstrip is etched in first medium substrate 1 plane, the feed distribution networks formed by Wilkinson power divider transformation is etched in second medium substrate 3 plane, two pieces of medium substrates share one piece of ground plate 5, two of Wilkinson power divider export microstrip line and connect respectively by coaxial probe is corresponding with two wave source excitation port of annulus shaped microstrip, thus realize the design that can produce the antenna of radio frequency OAM spiral wave beam.
Step 4: as shown in Figure 5, HFSS software is adopted to carry out modeling and simulation to the antenna designed, obtain the electric field phase distribution map of annular traveling wave antenna in space radiation, electric field phase presents vortex characteristic around the change of the angle of circumference of direction of propagation axle as seen from the figure, and the electric field phase circumferentially satisfied 2 π l=6 π of a circle change
,meet the spiral beam feature that mode of operation is 3.
embodiment 2
Step one: the microstrip design mode of operation l=2 adopting width ω=2.56mm, the annular microstrip antenna 2 of operating frequency f=2.5GHZ, adopts Rogers 4350B, dielectric constant
the board making first medium substrate 1 of=2.65, thickness h=0.93mm; Wherein the guide wavelength of annular microstrip antenna 2 is
, the girth C of annular microstrip antenna is l times of guide wavelength
, calculate effective dielectric constant according to formula ()
,
(1)
According to wavelength
, calculate and obtain wavelength
, wherein c is the light velocity, and f is operating frequency;
The guide wavelength calculating annular microstrip antenna 2 according to formula (two) is
,
(2)
Calculated by above-mentioned, the guide wavelength of annular microstrip antenna 2
=81.2mm, the girth of annular microstrip antenna 2 is l times of guide wavelength, i.e. C=162.4mm, be arranged at the guide wavelength at a distance of the annular microstrip antenna 2 of 1/4 times between wave source excitation port p1 on annular microstrip antenna 2 and wave source excitation port p2, namely between wave source excitation port p1 and wave source excitation port p2 at a distance of 20.3mm, thus realize the design of annular microstrip antenna 2.
Step 2: be that the output port of the Wilkinson power divider of 1 ~ 4HGZ connects respectively and exports microstrip line q1 and export microstrip line q2 by operating frequency, described output microstrip line q1 and export microstrip line q2 and adopt width
ωthe microstrip design mode of operation of=2.56mm
l=3, operating frequency
fthe microstrip line of=2.5GHZ makes, and adopts Rogers 4350B, dielectric constant
=2.65, thickness
hthe board making second medium substrate 3 of=0.93mm; The guide wavelength of described output microstrip line q1 is also
, the guide wavelength exporting microstrip line q1 is calculated according to the formula () in step one and formula (two)
=81.2mm, the length difference exported between microstrip line q1 and output microstrip line q2 is adjusted to the guide wavelength of the output microstrip line q1 of 3/4 times, namely export microstrip line q1 specific output microstrip line q2 and extend 60.9mm, thus realize the difference that Wilkinson power divider two output exports 90 °; Then the output load of regulation output microstrip line q2, make to export microstrip line q1, with these two outputs of output microstrip line q2, there is identical output intensity, what adjust two microstrip lines moves towards layout, make two output relative position relations of microstrip line consistent with the position relationship of two wave source excitation port of annulus shaped microstrip, thus realize the design of feed distribution networks.
Step 3: annulus shaped microstrip is etched in first medium substrate 1 plane, the feed distribution networks formed by Wilkinson power divider transformation is etched in second medium substrate 3 plane, two pieces of medium substrates share one piece of ground plate 5, two of Wilkinson power divider export microstrip line and connect respectively by coaxial probe is corresponding with two wave source excitation port of annulus shaped microstrip, thus realize the design that can produce the antenna of radio frequency OAM spiral wave beam.
Step 4: as shown in Figure 6, HFSS software is adopted to carry out modeling and simulation to the antenna designed, obtain the electric field phase distribution map of annular traveling wave antenna in space radiation, electric field phase presents vortex characteristic around the change of the angle of circumference of direction of propagation axle as seen from the figure, and the electric field phase circumferentially satisfied 2 π l=4 π of a circle change
,meet the spiral beam feature that mode of operation is 2.
embodiment 3
Step one: the microstrip design mode of operation l=4 adopting width ω=2.56mm, the annular microstrip antenna 2 of operating frequency f=2.5GHZ, adopts Rogers 4350B, dielectric constant
the board making first medium substrate 1 of=2.65, thickness h=0.93mm; Wherein the guide wavelength of annular microstrip antenna 2 is
, the girth C of annular microstrip antenna is l times of guide wavelength
, calculate effective dielectric constant according to formula ()
,
(1)
According to wavelength
, calculate and obtain wavelength
, wherein c is the light velocity, and f is operating frequency;
The guide wavelength calculating annular microstrip antenna 2 according to formula (two) is
,
(2)
Calculated by above-mentioned, the guide wavelength of annular microstrip antenna 2
=81.2mm, the girth of annular microstrip antenna 2 is l times of guide wavelength, i.e. C=324.8mm, be arranged at the guide wavelength at a distance of the annular microstrip antenna 2 of 1/4 times between wave source excitation port p1 on annular microstrip antenna 2 and wave source excitation port p2, namely between wave source excitation port p1 and wave source excitation port p2 at a distance of 20.3mm, thus realize the design of annular microstrip antenna 2.
Step 2: be that the output port of the Wilkinson power divider of 1 ~ 4HGZ connects respectively and exports microstrip line q1 and export microstrip line q2 by operating frequency, described output microstrip line q1 and output microstrip line q2 adopts the microstrip design mode of operation l=4 of width ω=2.56mm, the microstrip line of operating frequency f=2.5GHZ makes, adopt Rogers 4350B, dielectric constant
the board making second medium substrate 3 of=2.65, thickness h=0.93mm; The guide wavelength of described output microstrip line q1 is also
, the guide wavelength exporting microstrip line q1 is calculated according to the formula () in step one and formula (two)
=81.2mm, the length difference exported between microstrip line q1 and output microstrip line q2 is adjusted to the guide wavelength of the output microstrip line q1 of 3/4 times, namely export microstrip line q1 specific output microstrip line q2 and extend 60.9mm, thus realize the difference that Wilkinson power divider two output exports 90 °; Then the output load of regulation output microstrip line q2, make to export microstrip line q1, with these two outputs of output microstrip line q2, there is identical output intensity, what adjust two microstrip lines moves towards layout, make two output relative position relations of microstrip line consistent with the position relationship of two wave source excitation port of annulus shaped microstrip, thus realize the design of feed distribution networks.
Step 3: annulus shaped microstrip is etched in first medium substrate 1 plane, the feed distribution networks formed by Wilkinson power divider transformation is etched in second medium substrate 3 plane, two pieces of medium substrates share one piece of ground plate 5, two of Wilkinson power divider export microstrip line and connect respectively by coaxial probe is corresponding with two wave source excitation port of annulus shaped microstrip, thus realize the design that can produce the antenna of radio frequency OAM spiral wave beam.
Step 4: as shown in Figure 7, HFSS software is adopted to carry out modeling and simulation to the antenna designed, obtain the electric field phase distribution map of annular traveling wave antenna in space radiation, electric field phase presents vortex characteristic around the change of the angle of circumference of direction of propagation axle as seen from the figure, and the electric field phase circumferentially satisfied 2 π l=8 π of a circle change
,meet the spiral beam feature that mode of operation is 4.
embodiment 4
As shown in Figure 8, further, based on the annular microstrip structure of design in embodiment 1, mode of operation is calculated
lwhen=2,3,4, girth C=162.4mm, 243.6mm, 324.4mm of corresponding annular microstrip antenna; The annular microstrip antenna of above-mentioned different working modes is arranged on one piece of medium substrate in donut mode jointly, described each annular microstrip antenna is along the circumferential direction provided with two wave source excitation port, thus obtains a kind of OAM multiplexing device.
By reference to the accompanying drawings embodiment of the present utility model has been described in detail above, but the utility model is not limited to above-mentioned embodiment.Those of ordinary skill in the art is under enlightenment of the present utility model, under the protection range not departing from the utility model aim and claim, the annular micro-strip paster antenna that can produce radio frequency OAM spiral wave beam being operated in other frequencies and other mode of operations can also be designed, other phase shift power divider structure can also be adopted to form feed distribution networks to ring shaped microstrip two-terminal feeding; But; every ring shaped microstrip planar structure that make use of the utility model and provide in the antenna structure that can produce OAM radio frequency spiral wave beam; and make use of phase shift power splitter with the back to back structure interconnection feeding classification in the design, all belong to protection range of the present utility model.
Claims (5)
1. the antenna of radio frequency OAM wave beam is produced based on planar microstrip loop configuration, it is characterized in that: comprise the annular microstrip antenna (2) be arranged in first medium substrate (1) plane, be arranged at the feed distribution networks in second medium substrate (3) plane, be arranged at the ground plate (5) between first medium substrate (1) and second medium substrate (3), described annular microstrip antenna (2) is along the circumferential direction respectively arranged with wave source excitation port p1 and wave source excitation port p2, described feed distribution networks comprises phase shift power splitter (4), and the output microstrip line q1 be connected with the output of phase shift power splitter (4) respectively and export microstrip line q2, described output microstrip line q1 is connected with wave source excitation port p1 through ground plate (5) afterwards by coaxial probe, and described output microstrip line q2 is connected with wave source excitation port p2 through ground plate (5) afterwards by coaxial probe.
2. the antenna producing radio frequency OAM wave beam based on planar microstrip loop configuration according to claim 1, it is characterized in that: the distance between the wave source excitation port p1 that described annular microstrip antenna (2) is along the circumferential direction arranged and wave source excitation port p2 is the guide wavelength of the annular microstrip antenna (2) of n ± 1/4 times, and wherein the value of n is integer.
3. the antenna producing radio frequency OAM wave beam based on planar microstrip loop configuration according to claim 1, it is characterized in that: the length of the output microstrip line q1 of described formation feed distribution networks differs the guide wavelength of the output microstrip line q1 of n ± 1/4 times with the length exporting microstrip line q2, wherein the value of n is integer.
4. the antenna producing radio frequency OAM wave beam based on planar microstrip loop configuration according to claim 1, is characterized in that: described phase shift power splitter (4) is Wilkinson power divider.
5. a radio frequency OAM wave beam multiplexing device, it is characterized in that: described radio frequency OAM wave beam multiplexing device comprises multiple annular microstrip antenna being operated in different working modes, described multiple annular microstrip antenna is arranged on medium substrate jointly in donut mode, and described each annular microstrip antenna is along the circumferential direction provided with two wave source excitation port.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520314145.9U CN204668465U (en) | 2015-05-15 | 2015-05-15 | Antenna and the multiplexing device of radio frequency OAM wave beam is produced based on planar microstrip loop configuration |
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|---|---|---|---|
| CN201520314145.9U CN204668465U (en) | 2015-05-15 | 2015-05-15 | Antenna and the multiplexing device of radio frequency OAM wave beam is produced based on planar microstrip loop configuration |
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| CN105356065A (en) * | 2015-11-13 | 2016-02-24 | 浙江大学 | Antenna for generating radial spreading RF OAM wave beams based on annular travelling wave antenna |
| CN105762507A (en) * | 2016-02-04 | 2016-07-13 | 华中科技大学 | Monopole antenna array generating vortex electromagnetic waves and feed system of antenna array |
| CN106229618A (en) * | 2016-08-10 | 2016-12-14 | 电子科技大学 | For producing annular ellipse microstrip structure antenna and the multiplexer of radio frequency OAM wave beam |
| CN106299713A (en) * | 2016-08-10 | 2017-01-04 | 电子科技大学 | For producing HW SIW ring resonator structure antenna and the multiplexer of radio frequency OAM wave beam |
| CN107706542A (en) * | 2017-09-26 | 2018-02-16 | 北京邮电大学 | A kind of multi-modal duplex feeding vortex electromagnetic antenna battle array of high-gain |
| CN108281782A (en) * | 2018-01-23 | 2018-07-13 | 朱永忠 | A kind of substrate integration wave-guide resonant cavity OAM antennas |
| CN109378581A (en) * | 2018-11-22 | 2019-02-22 | 厦门大学 | A kind of circular microstrip paster antenna radiating double frequency whirlpool wave |
| CN109449581A (en) * | 2018-10-26 | 2019-03-08 | 西安电子科技大学 | For generating the ellipse patch aerial array of vortex electromagnetic wave |
| CN109586007A (en) * | 2018-10-26 | 2019-04-05 | 西安电子科技大学 | Planar tracks angular momentum antenna based on Butler matrix |
| CN109754053A (en) * | 2018-12-17 | 2019-05-14 | 广东工业大学 | Miniaturization high-gain anti-metal tag antenna based on dielectric resonator |
| CN110112548A (en) * | 2019-05-17 | 2019-08-09 | 厦门大学 | A kind of micro-strip paster antenna radiating quadravalence vortex wave beam |
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| CN105356065B (en) * | 2015-11-13 | 2018-05-08 | 浙江大学 | The antenna of generation radial propagation radio frequency OAM wave beams based on annular traveling wave antenna |
| CN105356065A (en) * | 2015-11-13 | 2016-02-24 | 浙江大学 | Antenna for generating radial spreading RF OAM wave beams based on annular travelling wave antenna |
| CN105762507A (en) * | 2016-02-04 | 2016-07-13 | 华中科技大学 | Monopole antenna array generating vortex electromagnetic waves and feed system of antenna array |
| CN105762507B (en) * | 2016-02-04 | 2017-04-26 | 华中科技大学 | Monopole antenna array generating vortex electromagnetic waves and feed system of antenna array |
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| CN106229618A (en) * | 2016-08-10 | 2016-12-14 | 电子科技大学 | For producing annular ellipse microstrip structure antenna and the multiplexer of radio frequency OAM wave beam |
| CN106299713A (en) * | 2016-08-10 | 2017-01-04 | 电子科技大学 | For producing HW SIW ring resonator structure antenna and the multiplexer of radio frequency OAM wave beam |
| CN107706542A (en) * | 2017-09-26 | 2018-02-16 | 北京邮电大学 | A kind of multi-modal duplex feeding vortex electromagnetic antenna battle array of high-gain |
| CN108281782A (en) * | 2018-01-23 | 2018-07-13 | 朱永忠 | A kind of substrate integration wave-guide resonant cavity OAM antennas |
| CN109449581A (en) * | 2018-10-26 | 2019-03-08 | 西安电子科技大学 | For generating the ellipse patch aerial array of vortex electromagnetic wave |
| CN109586007A (en) * | 2018-10-26 | 2019-04-05 | 西安电子科技大学 | Planar tracks angular momentum antenna based on Butler matrix |
| CN109586007B (en) * | 2018-10-26 | 2020-10-09 | 西安电子科技大学 | Planar orbital angular momentum antenna based on Butler matrix |
| CN109378581A (en) * | 2018-11-22 | 2019-02-22 | 厦门大学 | A kind of circular microstrip paster antenna radiating double frequency whirlpool wave |
| CN109754053A (en) * | 2018-12-17 | 2019-05-14 | 广东工业大学 | Miniaturization high-gain anti-metal tag antenna based on dielectric resonator |
| CN110112548A (en) * | 2019-05-17 | 2019-08-09 | 厦门大学 | A kind of micro-strip paster antenna radiating quadravalence vortex wave beam |
| WO2021253176A1 (en) * | 2020-06-15 | 2021-12-23 | 北京小米移动软件有限公司 | Vortex wave phase offset determining method and apparatus, and storage medium |
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