CN114614255A - Antenna - Google Patents

Antenna Download PDF

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Publication number
CN114614255A
CN114614255A CN202011423434.4A CN202011423434A CN114614255A CN 114614255 A CN114614255 A CN 114614255A CN 202011423434 A CN202011423434 A CN 202011423434A CN 114614255 A CN114614255 A CN 114614255A
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CN
China
Prior art keywords
antenna
resonant circuit
frequency
resonant
circuit
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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
Application number
CN202011423434.4A
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Chinese (zh)
Inventor
孔龙
罗昕
陈一
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN202011423434.4A priority Critical patent/CN114614255A/en
Priority to PCT/CN2021/124252 priority patent/WO2022121501A1/en
Priority to EP21902208.4A priority patent/EP4246722A4/en
Publication of CN114614255A publication Critical patent/CN114614255A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
    • 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
    • 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
    • H01Q1/52—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
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/328—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • H01Q5/48—Combinations of two or more dipole type antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • H01Q9/285—Planar dipole

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  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The embodiment of the application provides an antenna, which comprises a dielectric plate, at least one first antenna unit, at least one second antenna unit, a first resonant circuit and a second resonant circuit, wherein the first antenna unit resonates at a first frequency, the second antenna unit resonates at a second frequency. When the number of the first antenna elements is at least two, and the number of the second antenna elements is at least two, each first antenna element has a spacing therebetween, each second antenna element has a spacing therebetween, and each first antenna element and each second antenna element have a spacing therebetween. The first resonant circuit is located at a port of the first antenna element and the second resonant circuit is located at a port of the second antenna element. The first resonant circuit is open-circuited to the first frequency path and the first resonant circuit is open-circuited to the second frequency path. The second resonant circuit is open-circuited to the first frequency. The communication rate is improved.

Description

Antenna
Technical Field
The present application relates to the field of communications, and in particular, to an antenna.
Background
With the rapid development of modern communication systems, people have made higher and higher demands on communication rate, channel capacity, data throughput, user coverage and the like of the communication systems. In the development process of antennas such as Wireless Local Area Network (WLAN) antennas, cellular antennas, and mobile phone antennas, the external antenna mainly develops in several directions of multifrequency, high gain, miniaturization, and high isolation. The conventional multi-frequency multi-feed external antenna is usually printed on the same dielectric plate, and antenna units (antenna elements) with different frequencies on the same dielectric plate are closely arranged, so that the isolation between ports is low, mutual interference between frequency bands is caused, and finally, the communication rate is reduced.
Disclosure of Invention
The embodiment of the application provides an antenna which can improve communication speed.
In a first aspect, an antenna is provided, which includes a dielectric plate, at least one first antenna element resonating at a first frequency, at least one second antenna element resonating at a second frequency, a first resonant circuit, and a second resonant circuit; the at least one first antenna unit and the at least one second antenna unit are arranged on the dielectric plate; the first resonant circuit is located at a port of the first antenna element and the second resonant circuit is located at a port of the second antenna element; said first resonant circuit opens to said first frequency path and said first resonant circuit opens to said second frequency path; the second resonant circuit opens to the second frequency path and the second resonant circuit opens to the first frequency path.
With reference to the implementation manner of the first aspect, in a first possible implementation manner of the first aspect, the first resonant circuit is configured to open the first frequency path and the first resonant circuit is configured to open the second frequency path, and the following circuit structure is implemented: the first resonant circuit is connected in series with the first antenna element, and the first resonant circuit is a parallel resonant structure having a resonant frequency of the second frequency.
With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the second resonant circuit is configured to open the second frequency path and the second resonant circuit is configured to open the first frequency path, and the following circuit structure is implemented: the second resonant circuit is connected in series with the second antenna unit, and the second resonant circuit is a parallel resonant structure having a resonant frequency of the first frequency.
With reference to the first aspect or any one of the first to the second possible implementation manners of the first aspect, in a third possible implementation manner, the first resonant circuit is configured to open the first frequency path and the first resonant circuit is configured to open the second frequency path, and the following circuit structure is implemented: the first resonant circuit is connected in series with the first antenna element, and the first resonant circuit is a series resonant structure having a resonant frequency of the first frequency.
With reference to the first aspect or any one of the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner, the second resonant circuit is configured to open the second frequency path and the second resonant circuit is configured to open the first frequency path, and the following circuit structure is implemented: the second resonant circuit is connected in series with the second antenna unit, and the second resonant circuit is a series resonant structure having a resonant frequency of the second frequency.
With reference to the first aspect or any one of the first to fourth possible implementation manners of the first aspect, in a fifth possible implementation manner, the first resonant circuit is configured to open circuit for the first frequency path and the first resonant circuit is configured to open circuit for the second frequency path, and the fifth possible implementation manner is implemented by using the following circuit structure: the first resonant circuit is connected in parallel with the first antenna element, and the first resonant circuit is a series resonant structure having a resonant frequency of the second frequency.
With reference to the first aspect or any one of the first to fifth possible implementation manners of the first aspect, in a sixth possible implementation manner, the second resonant circuit is configured to open the second frequency path and the second resonant circuit is configured to open the first frequency path, and the following circuit structure is implemented: the second resonant circuit is connected in parallel with the second antenna unit, and the second resonant circuit is a series resonant structure having a resonant frequency of the first frequency.
With reference to the first aspect or any one of the first to sixth possible implementation manners of the first aspect, in a seventh possible implementation manner, the first resonant circuit is configured to open the first frequency path and the first resonant circuit is configured to open the second frequency path, and the following circuit structure is implemented: the first resonant circuit is connected in parallel with the first antenna element, and the first resonant circuit is a parallel resonant structure having a resonant frequency of the first frequency.
With reference to the first aspect or any one of the first to seventh possible implementation manners of the first aspect, in an eighth possible implementation manner, the first resonant circuit is a lumped resonant circuit, or the first resonant circuit is a distributed resonant circuit.
With reference to the first aspect or any one of the first to eighth possible implementation manners of the first aspect, in a ninth possible implementation manner, the second resonant circuit is a lumped resonant circuit, or the second resonant circuit is a distributed resonant circuit.
With reference to the first aspect or any one of the first to ninth possible implementation manners of the first aspect, in a tenth possible implementation manner, the lumped resonant circuit includes an inductive device and a capacitive device.
With reference to the first aspect or any one of the first to tenth possible implementation manners of the first aspect, in an eleventh possible implementation manner, the distributed resonant circuit is a printed circuit structure, and the distributed resonant circuit includes an equivalent inductance and an equivalent capacitance.
With reference to the first aspect or any one of the first to the twelfth possible implementation manners of the first aspect, in a thirteenth possible implementation manner, the distributed resonant circuit structure includes one of a slot unit, a circular ring unit, and a spiral unit.
With reference to the first aspect or any one of the first to the thirteenth possible implementation manners of the first aspect, in a fourteenth possible implementation manner, the first antenna unit is at least one of a dipole antenna, a patch antenna, a monopole antenna, and a horn antenna, or the second antenna unit is at least one of a dipole antenna, a patch antenna, a monopole antenna, and a horn antenna.
With reference to the first aspect or any one of the first to fourteenth possible implementation manners of the first aspect, in a fifteenth possible implementation manner, when the number of the first antenna elements is at least two, the antenna further includes a first transmission line, and the first transmission line is used to connect the at least two first antenna elements.
With reference to the first aspect or any one of the first to fifteenth possible implementation manners of the first aspect, in a sixteenth possible implementation manner, when the number of the second antenna units is at least two, the antenna further includes a second transmission line, and the second transmission line is used to connect the at least two second antenna units.
With reference to the first aspect or any one of the first to sixteenth possible implementation manners of the first aspect, in a seventeenth possible implementation manner, the length of the first transmission line is one medium wavelength of the first frequency; the length of the second transmission line is a dielectric wavelength of the second frequency.
With reference to the first aspect or any one of the first to seventeenth possible implementation manners of the first aspect, in an eighteenth possible implementation manner, the first transmission line is a coaxial line or a coplanar waveguide CPW transmission line, and the second transmission line is a coaxial line or a CPW transmission line.
With reference to the first aspect or any one of the first to eighteenth possible implementation manners of the first aspect, in a nineteenth possible implementation manner, the at least one first antenna element and the at least one second antenna element are arranged on the dielectric plate, and the method includes: the at least one first antenna unit is arranged on one surface of the dielectric plate, and the at least one second antenna unit is arranged on the other surface of the dielectric plate; or the at least one first antenna unit and the at least one second antenna unit are arranged on the same surface of the dielectric plate; or the at least one first antenna unit and the at least one second antenna unit are arranged on the same surface of the dielectric plate.
According to the technical scheme provided by the embodiment of the application, the first resonant circuit is arranged at the port of the first antenna unit of the antenna, the second resonant circuit is arranged at the port of the second antenna unit, the first resonant circuit is in circuit breaking with respect to the first frequency path, the first resonant circuit is in circuit breaking with respect to the second frequency path, the second resonant circuit is in circuit breaking with respect to the second frequency path, and the second resonant circuit is in circuit breaking with respect to the first frequency path, so that the communication speed is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below.
Fig. 1 is a schematic diagram of an antenna 100 according to an embodiment of the present application;
fig. 2 is a schematic diagram of an antenna structure according to an embodiment of the present application;
fig. 3 is a schematic diagram of an antenna 300 according to an embodiment of the present application;
FIG. 4 is a graph illustrating test results according to an embodiment of the present application;
fig. 5 is a schematic diagram of an antenna 500 according to an embodiment of the present application;
FIG. 6 is a diagram illustrating simulation results according to an embodiment of the present application.
Detailed Description
Fig. 1 is a schematic structural diagram of an antenna 100 according to an embodiment of the present application. The antenna 100 includes a dielectric plate 101, at least one first antenna element 102 resonating at a first frequency, at least one second antenna element 103 resonating at a second frequency, a first resonant circuit 104, and a second resonant circuit 105. At least one first antenna element 102 and at least one second antenna element 103 are arranged on the dielectric plate 101. A first resonant circuit 104 is located at the port of the first antenna element 102 and a second resonant circuit 105 is located at the port of the second antenna element 103. The first resonant circuit 104 is open circuit for a first frequency path and the first resonant circuit 104 is open circuit for a second frequency path. Second resonant circuit 105 is open-circuited for the second frequency and second resonant circuit 105 is open-circuited for the first frequency. Wherein, at least one first antenna element 102 and at least one second antenna element 103 are arranged on the dielectric plate 101, including: all the first antenna units 102 are arranged on one surface of the dielectric plate 101, and all the second antenna units 103 are arranged on the other surface of the dielectric plate 101; or all the first antenna elements 102 and all the second antenna elements 103 are arranged on the same surface of the dielectric plate 101; alternatively, all the first antenna elements 102 and at least one second antenna element 103 are arranged on the same surface of the dielectric plate 101; alternatively, all the second antenna elements 103 and at least one first antenna element 102 are arranged on the same plane of the dielectric plate 101. The dielectric plate is generally planar and in some cases also of flexible material, and may be curved, in which case the antenna element may be located on the outer surface of the dielectric plate. The first antenna unit 102 may be at least one of a dipole antenna, a patch antenna, a monopole antenna, and a horn antenna, and the second antenna unit 103 may also be at least one of a dipole antenna, a patch antenna, a monopole antenna, and a horn antenna.
When the number of the first antenna elements 102 is at least two, the antenna 100 further comprises a first transmission line 106, and the first transmission line 106 is used for connecting at least two first antenna elements 102. When the number of the second antenna elements 103 is at least two, the antenna 100 further comprises a second transmission line 107 for connecting at least two second antenna elements 104. The length of the first transmission line 106 is one medium wavelength of the first frequency. The second transmission line 107 has a length of one dielectric wavelength of the second frequency. The first transmission line 106 may be a coaxial or Coplanar waveguide (CPW) transmission line, and the second transmission line 107 may also be a coaxial or CPW transmission line.
Specifically, the first resonant circuit 104 can be disconnected for the first frequency path and the second frequency path in the following manners one to four.
The method I comprises the following steps: the first resonant circuit 104 adopts a parallel resonant structure, and the resonant frequency is the second frequency, and is connected in series with the first antenna unit.
The second method comprises the following steps: the first resonant circuit 104 adopts a series resonant structure, and the resonant frequency is a first frequency and is connected in series with the first antenna unit.
The third method comprises the following steps: the first resonant circuit 104 adopts a series resonant structure, and the resonant frequency is the second frequency and is connected in parallel with the first antenna unit.
The method is as follows: the first resonant circuit 104 adopts a parallel resonant structure, and the resonant frequency is the first frequency and is connected in parallel with the first antenna unit.
The second resonant circuit 105 can be implemented in the following five to eight ways for the second frequency path and for the first frequency path.
The fifth mode is as follows: the second resonant circuit 105 is of a parallel resonant structure, has a first resonant frequency, and is connected in series with the second antenna unit.
The method six: the second resonant circuit 105 adopts a series resonant structure, and the resonant frequency is the second frequency and is connected in series with the second antenna unit.
The method is as follows: the second resonant circuit 105 adopts a series resonant structure, has a resonant frequency of the first frequency, and is connected in parallel with the second antenna unit.
The method eight: the second resonant circuit 105 adopts a parallel resonant structure, and the resonant frequency is the second frequency and is connected in parallel with the second antenna unit.
The principle that the resonant circuit adopts a series resonance structure or a parallel resonance structure to realize the access or the open circuit of a certain frequency is as follows: the series resonant structure is equivalent to a path to energy when connected in series to the transmission line; a series resonant structure is equivalent to an open circuit to energy when connected in parallel to a transmission line. When the parallel resonance structure is connected in series with the transmission line, the energy is equivalent to open circuit; parallel resonant structures are equivalent to a path for energy when connected in parallel to a transmission line.
The first resonant circuit in the first to fourth modes is a lumped resonant circuit or a distributed resonant circuit.
The second resonant circuit in the fifth to eighth modes is a lumped resonant circuit or a distributed resonant circuit.
The lumped resonant circuit includes an inductive device and a capacitive device. The distributed resonant circuit is a printed circuit structure and comprises an equivalent inductance and an equivalent capacitance.
By designing the first resonance circuit 104 to be open circuit for the first frequency path and for the second frequency path, and the second resonance circuit 105 to be open circuit for the second frequency path and for the first frequency path, an increase in isolation between the ports can be achieved. Further, when the resonant circuit is located at the antenna element port, the energy coupling spatial path difference causing the isolation reduction does not need to be considered.
Only two resonant frequencies of the antenna element are shown in fig. 1, and in practical applications, the solution of the embodiment of fig. 1 is also applicable to antenna elements with three or more resonant frequencies. Specifically, the antenna comprises m1 (m1 is more than or equal to 1) antenna units which are distributed on a dielectric plate and resonate at a frequency f1, m2 (m2 is more than or equal to 1) antenna units which resonate at a frequency f2, and so on, mn (mn is more than or equal to 1, n is more than or equal to 3) antenna units which resonate at a frequency fn, and resonant circuits which are respectively positioned on ports of the antenna units with the resonant frequencies f1, f2 and fn. When the number of antenna elements per resonant frequency is 2 or more, the antenna further includes a transmission line connecting the antenna elements of resonant frequencies f1, f2, fn, as shown in fig. 2. The implementation of the resonant circuit is described with reference to fig. 1, and is not described herein again.
Fig. 3 is a schematic structural diagram of an antenna 300 according to an embodiment of the present application. The antenna 300 is a dual-band, dual-feed antenna operating in the 2G and 5G frequency bands. The dielectric plate 201 has a length of 152mm, a width of 13mm and a thickness of 0.8 mm. The antenna unit resonating at the 2G frequency band is located on one surface of the dielectric plate 201, and the antenna unit resonating at the 5G frequency band is located on the other surface of the dielectric plate 201. The antenna units resonating in the 2G frequency band and the 5G frequency band are of dipole structures. The number of the antenna units resonating in the 2G frequency band is two, and the number of the antenna units resonating in the 5G frequency band is three. The antenna units with the same resonant frequency are spaced from each other. The antenna unit a and the antenna unit b resonating at the 5G frequency band are connected by a CPW transmission line, and the antenna unit b and the antenna unit c are connected by a coaxial line. The antenna unit a and the antenna unit b resonating in the 2G band are connected by a coaxial line.
In this embodiment, the resonant circuit is formed by lumped inductance L and lumped capacitance C. L, C value of the resonant circuit resonant at 5G band: l ═ 1.2nH, C ═ 0.5 pF; l, C value of resonant circuit resonating in 2G band: l2.2 nH and C2.4 pF. The first LC circuit structure resonated in the 5G frequency band is connected in series to the port of the 2G antenna unit a, and the first LC circuit structure is a parallel LC structure, so as to improve the isolation of the 5G frequency band. The second LC circuit structure resonating at the 2G frequency band is connected in series to the port of the 5G antenna unit a, and the second LC circuit structure is a parallel LC structure, so as to improve the isolation of the 2G frequency band. The test results are shown in fig. 4. Compared with the antenna without the resonant circuit loaded at the port, after the resonant circuit is loaded, the isolation in the 2G frequency band is improved by more than 7dB, and the isolation in the 5G frequency band is improved by more than 10 dB.
Fig. 5 is a schematic structural diagram of an antenna 500 according to an embodiment of the present application. Unlike the embodiment of fig. 3, the resonant circuit in the embodiment of fig. 5 is implemented by printing a distributed resonant circuit structure. Specifically, a port of the 2G antenna unit a is connected in series with a first distributed resonant circuit, and the first distributed resonant circuit is composed of 2 slot units with resonant frequency of 5G frequency band, so as to improve isolation of 5G frequency band. In this embodiment, the slit structure itself may be equivalent to a parallel LC resonant circuit structure. The outer gap length of each gap unit of the first distributed resonant circuit is 6.2mm, the inner gap length is 1.6mm, the gap width is 1.6mm, the transverse interval between the gaps is 0.2mm, and the distance between the two gaps is 0.3 mm. The port department of 5G antenna element a connects in series the second distributed resonant circuit, and the second distributed resonant circuit comprises 1 resonant frequency is the slot unit of 2G frequency channel to promote the isolation of 2G frequency. The length of the outer gap of the gap unit of the second distributed resonant circuit is 14.5mm, the length of the inner gap is 5.3mm, the width of the gap is 1.4mm, and the transverse interval between the gaps is 0.2 mm. The simulation results are shown in fig. 6: compared with an antenna with a port not loaded with the resonant circuit, after the resonant circuit is loaded, the isolation in the 2G frequency band is improved by more than 4dB, and the isolation in the 5G frequency band is improved by more than 8 dB.
The scheme described in the embodiment of the application is suitable for the scene of improving the pilot frequency isolation of the antenna, and is suitable for base stations, mobile phones, vehicles, WIFI products, microwave products and the like.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (20)

1. An antenna, characterized in that, it comprises a dielectric plate, at least one first antenna element resonating at a first frequency, at least one second antenna element resonating at a second frequency, a first resonance circuit, a second resonance circuit;
the at least one first antenna unit and the at least one second antenna unit are arranged on the dielectric plate;
the first resonant circuit is located at a port of the first antenna element and the second resonant circuit is located at a port of the second antenna element; said first resonant circuit opens to said first frequency path and said first resonant circuit opens to said second frequency path; the second resonant circuit opens to the second frequency path and the second resonant circuit opens to the first frequency path.
2. The antenna of claim 1, wherein the first resonant circuit is open-circuited for the first frequency path and the first resonant circuit is open-circuited for the second frequency path by a circuit configuration comprising:
the first resonant circuit is connected in series with the first antenna element, and the first resonant circuit is a parallel resonant structure having a resonant frequency of the second frequency.
3. An antenna according to claim 1 or 2, wherein the second resonant circuit is open circuit for the second frequency path and the second resonant circuit is open circuit for the first frequency path, and wherein the circuit is configured as follows:
the second resonant circuit is connected in series with the second antenna unit, and the second resonant circuit is a parallel resonant structure having a resonant frequency of the first frequency.
4. The antenna of claim 1, wherein the first resonant circuit is open-circuited for the first frequency path and the first resonant circuit is open-circuited for the second frequency path by a circuit configuration comprising:
the first resonant circuit is connected in series with the first antenna element, and the first resonant circuit is a series resonant structure having a resonant frequency of the first frequency.
5. The antenna of claim 1 or 4, wherein the second resonant circuit is open-circuited for the second frequency path and the second resonant circuit is open-circuited for the first frequency path by a circuit configuration comprising:
the second resonant circuit is connected in series with the second antenna unit, and the second resonant circuit is a series resonant structure having a resonant frequency of the second frequency.
6. The antenna of claim 1, wherein the first resonant circuit is open-circuited for the first frequency path and the first resonant circuit is open-circuited for the second frequency path by a circuit configuration comprising:
the first resonant circuit is connected in parallel with the first antenna element, and the first resonant circuit is a series resonant structure having a resonant frequency of the second frequency.
7. The antenna of claim 1, wherein the second resonant circuit is open-circuited to the second frequency and the second resonant circuit is open-circuited to the first frequency by a circuit configuration comprising:
the second resonant circuit is connected in parallel with the second antenna unit, and the second resonant circuit is a series resonant structure having a resonant frequency of the first frequency.
8. The antenna of claim 1, wherein the first resonant circuit is open-circuited for the first frequency path and the first resonant circuit is open-circuited for the second frequency path by a circuit configuration comprising:
the first resonant circuit is connected in parallel with the first antenna element, and the first resonant circuit is a parallel resonant structure having a resonant frequency of the first frequency.
9. The antenna of claim 1, wherein the second resonant circuit is open-circuited for the second frequency and the second resonant circuit is open-circuited for the first frequency by a circuit configuration comprising:
the second resonant circuit is connected in parallel with the second antenna unit, and the second resonant circuit is a parallel resonant structure having a resonant frequency of the second frequency.
10. An antenna according to any of claims 2, 4, 6 or 8, wherein the first resonant circuit is a lumped resonant circuit or the first resonant circuit is a distributed resonant circuit.
11. An antenna according to any of claims 3, 5, 7 or 9, wherein the second resonant circuit is a lumped resonant circuit or the second resonant circuit is a distributed resonant circuit.
12. An antenna according to claim 10 or 11, wherein the lumped resonant circuit comprises an inductive device and a capacitive device.
13. An antenna according to claim 10 or 11, wherein the distributed resonant circuit is a printed circuit structure, the distributed resonant circuit comprising an equivalent inductance and an equivalent capacitance.
14. The antenna of claim 6 or 7, wherein the distributed resonant circuit structure comprises one of a slot element, a circular loop element, and a spiral element.
15. The antenna according to any of claims 1 to 14, wherein the first antenna element is at least one of a dipole antenna, a patch antenna, a monopole antenna, a horn antenna, or the second antenna element is at least one of a dipole antenna, a patch antenna, a monopole antenna, a horn antenna.
16. The antenna of any one of claims 1 to 15, wherein when the number of the first antenna elements is at least two, the antenna further comprises a first transmission line for connecting the at least two first antenna elements.
17. The antenna of any one of claims 1 to 16, wherein when the number of the second antenna elements is at least two, the antenna further comprises a second transmission line for connecting the at least two second antenna elements.
18. An antenna according to claim 16 or 17, wherein the length of the first transmission line is one medium wavelength of the first frequency; the length of the second transmission line is a dielectric wavelength of the second frequency.
19. The antenna of any one of claims 16 to 18, wherein the first transmission line is a coaxial or coplanar waveguide (CPW) transmission line and the second transmission line is a coaxial or CPW transmission line.
20. The antenna of any one of claims 1 to 19, wherein the at least one first antenna element and the at least one second antenna element are arranged on the dielectric plate, and wherein the antenna comprises:
the at least one first antenna unit is arranged on one surface of the dielectric plate, and the at least one second antenna unit is arranged on the other surface of the dielectric plate; or
The at least one first antenna unit and the at least one second antenna unit are arranged on the same surface of the dielectric plate; or
The at least one first antenna unit and the at least one second antenna unit are arranged on the same surface of the dielectric plate.
CN202011423434.4A 2020-12-08 2020-12-08 Antenna Pending CN114614255A (en)

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