EP4075593A1

EP4075593A1 - Half-wave oscillator, half-wave oscillator assembly and antenna

Info

Publication number: EP4075593A1
Application number: EP20905828.8A
Authority: EP
Inventors: Kaowen HANG
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2019-12-24
Filing date: 2020-12-24
Publication date: 2022-10-19
Also published as: WO2021129734A1; CN113036401A; EP4075593A4

Abstract

Provided in the present disclosure are a half-wave oscillator, a half-wave oscillator assembly, and an antenna. The half-wave oscillator comprises a first radiation arm and a second radiation arm. The first radiation arm and the second radiation armeach comprise two segments of radiation bodies disposed in a straight line and a connector disposed between the radiation bodies. The connectors are used to disconnect or connect the two segments of radiation bodies in the radiation arms. In the first radiation arm and the second radiation arm, the radiation body close to the other radiation arm is used to connect to a feed unit. The radiation bodies of the first radiation arm and the radiation bodies of the second radiation arm are symmetrically arranged.

Description

CROSS-REFERENCE TO RELATED APPLICATION

This application is filed on the basis of Chinese patent application No. CN201911341881.2 filed December 24, 2019 , and claims priority of the Chinese patent application, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

Embodiments of the present disclosure relate to, but not limited to, the technical field of communication, and in particular to, but not limited to, a half-wave dipole, a half-wave dipole assembly, and an antenna.

BACKGROUND

In mobile communications, an antenna that uses a half-wave dipole as a radiation module is usually used for communication. For example, in a system that supports Multi Input Multi Output (MIMO) and diversity reception functions, each cell or sector is required to be configured with multiple antennas, and these antennas are required to have zero coherence. Orthogonally polarized antennas which meet these requirements can be used for communication in such a system. For an orthogonally polarized antenna, two half-wave dipoles are placed vertically on a plane, so as to realize the orthogonal polarization characteristics of two antennas.
The half-wave dipole has the advantages of simple engineering implementation and space saving. However, in the existing technology, because the operating bandwidth of the half-wave dipole is too narrow, multiple independent half-wave dipoles and feeder systems are required in order to achieve multi-band coverage, which overburdens mobile base station antenna towers which are already quite crowded. On the other hand, building a new mobile base station antenna tower not only requires huge investment, but is also confronted with difficulty in land acquisition.

SUMMARY

A half-wave dipole, a half-wave dipole assembly, and an antenna provided by the present disclosure mainly solve, to at least a certain extent, the technical problem of high costs required for achieving multi-band coverage due to the narrow operating bandwidth of the half-wave dipole.
To solve the above technical problem to at least a certain extent, the present disclosure provides a half-wave dipole, including: a first radiation arm and a second radiation arm. The first radiation arm and the second radiation arm each include two radiators arranged along a straight line and a connector arranged between the radiators. The connector is configured for disconnecting or connecting the two radiators in respective radiation arms. In the first radiation arm and the second radiation arm, the radiator close to the other radiation arm is configured for connecting to a feeding unit. The radiators of the first radiation arm and the radiators of the second radiation arm are symmetrically arranged.
According to an embodiment of the present disclosure, a half-wave dipole assembly is also provided, which includes at least one half-wave dipole described above.
According to an embodiment of the present disclosure, an antenna is also provided, which includes at least one half-wave dipole described above.
Additional features and advantages of the present disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the present disclosure.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic structural diagram of a half-wave dipole according to embodiment one of the present disclosure;
FIG. 2 is another schematic structural diagram of the half-wave dipole according to embodiment one of the present disclosure;
FIG. 3 is still another schematic structural diagram of the half-wave dipole according to embodiment one of the present disclosure;
FIG. 4 is a schematic structural diagram of the half-wave dipole where the connector is a switch according to embodiment one of the present disclosure;
FIG. 5 is a schematic structural diagram of the half-wave dipole where the connector is a reactive wire according to embodiment one of the present disclosure;
FIG. 6 is a schematic structural diagram of a half-wave dipole according to embodiment two of the present disclosure;
FIG. 7-1 is a first schematic structural diagram of a half-wave dipole assembly according to embodiment three of the present disclosure;
FIG. 7-2 is a second schematic structural diagram of the half-wave dipole assembly according to embodiment three of the present disclosure;
FIG. 8-1 is a third schematic structural diagram of the half-wave dipole assembly according to embodiment three of the present disclosure;
FIG. 8-2 is a fourth schematic structural diagram of the half-wave dipole assembly according to embodiment three of the present disclosure;
FIG. 9-1 is a schematic structural diagram of a half-wave dipole according to embodiment four of the present disclosure;
FIG. 9-2 is a schematic structural diagram of a half-wave dipole assembly according to embodiment four of the present disclosure;
FIG. 10-1 is a schematic structural diagram of a half-wave dipole according to embodiment five of the present disclosure; and
FIG. 10-2 is a schematic structural diagram of a half-wave dipole assembly according to embodiment five of the present disclosure.

DETAILED DESCRIPTION

Objects, technical schemes and advantages of the present disclosure will be clear from a detailed description of embodiments of the present disclosure in conjunction with the drawings. It should be understood that the specific embodiments described herein are merely used for illustrating the present disclosure, and are not intended to limit the present disclosure.

Embodiment One

An antenna includes a radiation unit and a feeding unit. Generally, a half-wave dipole is used as the radiation unit. The half-wave dipole includes two symmetrically arranged radiators, and has the advantages of simple engineering implementation and space saving. However, the operating bandwidth of the half-wave dipole cannot be too wide. If the operating bandwidth of the half-wave dipole is too wide, the standing wave, beam width, gain, etc., of the antenna may deviate from design values. Therefore, in the existing technology, the bandwidth of the half-wave dipole is relatively narrow, and high costs are incurred when achieving multi-band coverage.
In order to solve the above technical problem, according to an embodiment of the present disclosure, a half-wave dipole is provided. As shown in FIG. 1, the half-wave dipole includes a first radiation arm 10 and a second radiation arm 20. The first radiation arm 10 and the second radiation arm 20 each include two radiators arranged along a straight line and a connector arranged between the radiators. The connector is configured for disconnecting or connecting the two radiators in respective radiation arms. In the first radiation arm 10 and the second radiation arm 20, the radiator close to the other radiation arm is configured for connecting to a feeding unit 30. The radiators of the first radiation arm 10 and the radiators of the second radiation arm 20 are symmetrically arranged. That is to say, the half-wave dipole includes four radiators and two connectors. A first radiator 101 and a second radiator 102 are arranged along a same straight line, and a first connector 103 is arranged between the first radiator 101 and the second radiator 102, to form the first radiation arm 10. The first connector 103 is configured to disconnect the first radiator 101 from the second radiator 102, or connect the first radiator 101 to the second radiator 102. A third radiator 201 and a fourth radiator 202 are arranged along a same straight line, and a second connector 203 is arranged between the third radiator 201 and the fourth radiator 202, to form the second radiation arm 20. The second connector 203 is configured to disconnect the third radiator 201 from the fourth radiator 202, or connect the third radiator 201 to the fourth radiator 202. In addition, the first radiator 101 and the fourth radiator 202 are symmetrically arranged (that is, the first radiator 101 and the fourth radiator 202 are identical, and the positions of the first radiator 101 and the fourth radiator 202 are symmetrical). The second radiator 102 and the third radiator 201 are symmetrically arranged (that is, the second radiator 102 and the third radiator 201 are identical, and the positions of the second radiator 102 and the third radiator 201 are symmetrical). The second radiator 102 in the first radiation arm 10 is close to the second radiation arm 20. The third radiator 201 in the second radiation arm 20 is close to the first radiation arm 10. The second radiator 102 and the third radiator 201 are configured to connect to the feeding unit 30. It should be understood that because the length of the radiator is related to the operating band of the radiator, an effective radiator length of the radiation arm can be changed by disconnecting or connecting the radiators of the radiation arm by the connector, so that the radiation arm can operate in two operating bands, thereby increasing the bandwidth of the half-wave dipole. For example, for the first radiation arm, when the first radiator 101 is connected to the second radiator 102 by the first connector 103, the first radiator 101 is connected to the feeding unit 30 through the second radiator 102, so that both the first radiator 101 and the second radiator 102 are effective radiators of the first radiation arm 10, and in this case the first radiation arm 10 operates in a first band (it should be understood that the first band corresponds to a total length of the first radiator 101 and the second radiator 102). When the first radiator 101 is disconnected from the second radiator 102 by the first connector 103, only the second radiator 102 is connected to the feeding unit 30, so that the effective radiator of the first radiation arm 10 is the second radiator 102, and the first radiation arm 10 operates in a second band (it should be understood that the operating band corresponds to a length of the second radiator 102). For the second radiation arm, reference may be made to the description of the first radiation arm.
In an embodiment of the present disclosure, the radiator may be a metal radiator, and the metal radiator may be a printed dipole or a die-cast dipole. The length of the radiator may be flexibly set according to actual needs. Since the length of the radiator is related to the operating band of the radiator, the length of the radiator may be determined according to the operating band of the half-wave dipole to be designed. In the embodiment, the two radiators of the first radiation arm 10 may be the same or different, and the two radiators of the second radiation arm 20 may be the same or different.
In an embodiment of the present disclosure, an angle between the first radiation arm 10 and the second radiation arm 20 may be greater than or equal to 90 degrees and less than or equal to 180 degrees. For example, as shown in FIG. 1, the angle between the first radiation arm 10 and the second radiation arm 20 is 180 degrees (that is, the first radiation arm 10 and the second radiation arm 20 are arranged along a straight line). Alternatively, referring to FIG. 2, the angle between the first radiation arm 10 and the second radiation arm 20 is 90 degrees. Alternatively, referring to FIG. 3, the angle between the first radiation arm 10 and the second radiation arm 20 is 120 degrees.
In an embodiment of the present disclosure, the connectors in the two radiation arms may be in different states. For example, the first radiator 101 is connected to the second radiator 102 by the first connector 103, and the third radiator 201 is disconnected from the fourth radiator 202 by the second connector 203. In this case, the operating band of the first radiation arm 10 is the first band, and the operating band of the second radiation arm 20 is the second band. To improve radiation efficiency, the connectors in the two radiation arms may be in the same state. That is to say, the connector in the first radiation arm 10 (i.e., the first connector 103) is in the same state as the connector in the second radiation arm 20 (i.e., the second connector 203). For example, the first connector 103 and the second connector 203 may both be in a connected state. In this case, the first radiator 101 is connected to the second radiator 102, the third radiator 201 is connected to the fourth radiator 202, and the operating bands of the first radiation arm 10 and the second radiation arm 20 are both the first band. Alternatively, the first connector 103 and the second connector 203 may both be in a disconnected state. In this case, the first radiator 101 is disconnected from the second radiator 102, the third radiator 201 is disconnected from the fourth radiator 202, and the operating bands of the first radiation arm 10 and the second radiation arm 20 are both the second band.
In an embodiment of the present disclosure, referring to FIG. 4, the connector may be a switch. Two ends of the switch are respectively connected with the two radiators. On/off of the switch is controlled according to a band of a signal to be sent or received, so as to realize switching between the operating bands of the half-wave dipole. That is to say, one end of the first switch 103 is connected to the first radiator 101, and the other end of the first switch 103 is connected to the second radiator 102. One end of the second switch 203 is connected to the third radiator 201, and the other end of the second switch 203 is connected to the fourth radiator 202.
In an embodiment of the present disclosure, referring to FIG. 5, the connector may be a reactive wire. Two stages of the reactive wire are respectively connected to the two radiators in the radiation arm. A first stage of a first reactive wire 103 is connected to the first radiator 101, and the other stage of the first reactive wire 103 is connected to the second radiator 102. A first stage of a second reactive wire 203 is connected to the third radiator 201, and the other stage of the second reactive wire 203 is connected to the fourth radiator 202. Whether the two stages of the reactive wire are connected is related to a band of a signal inputted to the reactive wire. In the embodiment, the reactive wire has the following characteristics: when a frequency of a signal inputted to the reactive wire is in the first band, the two stages of the reactive wire are in a connected state; when the frequency of the signal inputted to the reactive wire is in the second band, the two stages of the reactive wire are in a disconnected state. That is to say, a signal in the first band can be transmitted between the two stages of the reactive wire, and a signal in the second band cannot be transmitted between the two stages of the reactive wire. In this way, for the first radiation arm 10, when a signal inputted to the first radiation arm 10 is in the first band, the signal can pass through the first reactive wire 103 and be transmitted between the first radiator 101 and the second radiator 102, and both the first radiator 101 and the second radiator 102 are effective radiators. When a signal inputted to the first radiation arm 10 is in the second band, the signal cannot pass through the first reactive wire, and the effective radiator is the second radiator 102. For the operating principle of the second radiation arm 20, reference may be made to the operating principle of the first radiation arm 10, and the details will not be repeated here. With the use of the reactive wire as the connector, on the one hand, the disconnection and connection can be realized for different bands. On the other hand, because the disconnection and connection of the two stages of the reactive wire are related to the frequency of the signal inputted to the reactive wire, signals in the first band and the second band can be simultaneously inputted to the first radiation arm 10, with the signal in the first band transmitted through the first radiator 101 and the second radiator 102, and the signal in the second band transmitted through the second radiator 102, thereby achieving coverage of two bands at the same time.
In an embodiment of the present disclosure, the reactive wire may be a semi-steel cable. Certainly, the reactive wire may also be of other materials.
In an embodiment of the present disclosure, a signal sent to the first radiation arm 10 and a signal sent to the second radiation arm 20 may be in the same band and have a phase difference of 180 degrees.
Embodiments of the present disclosure provide a half-wave dipole and a half-wave dipole assembly. The half-wave dipole includes a first radiation arm and a second radiation arm. The first radiation arm and the second radiation arm each include two radiators arranged along a straight line and a connector arranged between the radiators. The connector is configured for disconnecting or connecting the two radiators in respective radiation arms. In the first radiation arm and the second radiation arm, the radiator close to the other radiation arm is configured for connecting to a feeding unit. The radiators of the first radiation arm and the radiators of the second radiation arm are symmetrically arranged. In some implementations, each of the radiation arms of the half-wave dipole includes two radiators which can be connected to or disconnected from each other. When the two radiators are disconnected from each other, the radiation arm has one effective radiator. When the two radiators are connected to each other, the radiation arm has two effective radiators. The radiation frequency of one effective radiator is different from the radiation frequency of two effective radiators, so that the operating band of the radiation arm can cover two bands, which increases the operating bandwidth of the half-wave dipole and reduces the costs required for achieving multi-band coverage.

Embodiment Two

For a better understanding of the present disclosure, the embodiments of the present disclosure are described with reference to the following examples. Referring to FIG. 6, a half-wave dipole according to an embodiment of the present disclosure includes a first radiation arm 10 and a second radiation arm 20. The first radiation arm 10 and the second radiation arm 20 each include two radiators arranged along a straight line and a reactive wire arranged between the radiators. In the first radiation arm 10 and the second radiation arm 20, the radiator close to the other radiation arm is configured for connecting to a feeding unit 30. The radiators of the first radiation arm 10 and the radiators of the second radiation arm 20 are symmetrically arranged. That is to say, the half-wave dipole includes four radiators and two reactive wires. A first radiator 101 and a second radiator 102 are arranged along a same straight line, a first reactive wire 103 is arranged between the first radiator 101 and the second radiator 102, and two stages of the first reactive wire 103 are respectively connected to the first radiator 101 and the second radiator 102, to form the first radiation arm 10. A third radiator 201 and a fourth radiator 202 are arranged along a same straight line, a second reactive wire 203 is arranged between the third radiator 201 and the fourth radiator 202, and two stages of the second reactive wire 203 are respectively connected to the third radiator 201 and the fourth radiator 202, to form the second radiation arm 20. In addition, the first radiator 101 and the fourth radiator 202 are symmetrically arranged (that is, the first radiator 101 and the fourth radiator 202 are identical, and the positions of the first radiator 101 and the fourth radiator 202 are symmetrical). The second radiator 102 and the third radiator 201 are symmetrically arranged (that is, the second radiator 102 and the third radiator 201 are identical, and the positions of the second radiator 102 and the third radiator 201 are symmetrical). The second radiator 102 in the first radiation arm 10 is close to the second radiation arm 20. The third radiator 201 in the second radiation arm 20 is close to the first radiation arm 10. The second radiator 102 and the third radiator 201 are configured to be connected to the feeding unit 30.
In an embodiment of the present disclosure, when the first radiator 101 is connected to the second radiator 102, and the third radiator 201 is connected to the fourth radiator 202, the first radiator 101 and the second radiator 102 are effective radiators of the first radiation arm 10, the third radiator 201 and the fourth radiator 202 are effective radiators of the second radiation arm 20, and the operating bands of the two radiation arms are both the first band. When the first radiator 101 is disconnected from the second radiator 102, and the third radiator 201 is disconnected from the fourth radiator 202, the second radiator 102 is the effective radiator of the first radiator arm 10, the third radiator 201 is the effective radiator of the second radiator arm 20, and the operating bands of the two radiators are both the second band.
In an embodiment of the present disclosure, the first reactive wire 103 and the second reactive wire 203 are identical.
In an embodiment of the present disclosure, for a signal whose frequency is in the first band, the two stages of each of the first reactive wire 103 and the second reactive wire 203 are in a state of being connected to each other with zero impedance. For a signal whose frequency is in the second band, the two stages of each of the first reactive wire 103 and the second reactive wire 203 are disconnected from each other. That is to say, for a signal whose frequency is in the first band, the first radiator 101 and the second radiator 102 are in a state of being connected to each other, and the third radiator 201 and the third radiator 201 are in a state of being connected to each other. For a signal whose frequency is in the second band, the first radiator 101 and the second radiator 102 are in a state of being disconnected from each other, and the third radiator 201 and the third radiator 201 are in a state of being disconnected from each other. In this way, the operating bands of the first radiation arm 10 and the second radiation arm 20 can cover the first band and the second band at the same time, so that the operating bands of the half-wave dipole can cover the first band and the second band at the same time. That is to say, for the first radiation arm 10, assuming that a signal in the first band and a signal in the second band are simultaneously inputted to the first radiation arm 10, the signal in the first band may be transmitted through the first radiator 101 and the second radiator 102, and the signal in the second band may be transmitted through the second radiator 102, so that the signal in the first band and the signal in the second band can be transmitted at the same time. The same is true for the second radiation arm 20. In an embodiment of the present disclosure, signals may be simultaneously inputted to the first radiation arm 10 and the second radiation arm 20 through a radiation unit, where the signal inputted to the first radiation arm 10 and the signal inputted to the second radiation arm 20 are in the same band and have a phase difference of 180 degrees.
In an embodiment of the present disclosure, the radiator may be a metal radiator, and the metal radiator is a printed dipole. The first radiator 101 is identical to the second radiator 102, that is, the half-wave dipole includes four identical radiators. The lengths of the first radiator 101 and the second radiator 102 may be designed according to the operating band of the half-wave dipole to be designed. Assuming that the first band is f₁, the second band is f₂, a wavelength corresponding to the first band is λ₁, and a wavelength corresponding to the second band is λ₂, then fi is greater than f₁, λ₁ is greater than λ₂, f₂ is in a range of [1.8f₁, 2.2f₁], the length of the metal radiator is λ₂/4, a spacing between the two stages of respective reactive wires is less than λ₂/100, and the length of the reactive wires is: λ₂/(2ε^1/2), where ε is a dielectric constant of a material for preparing the reactive wire.
In an embodiment of the present disclosure, an angle between the first radiation arm 10 and the second radiation arm 20 is 180 degrees.
According to an embodiment of the present disclosure, a half-wave dipole is provided. The half-wave dipole includes a first radiation arm and a second radiation arm. The first radiation arm and the second radiation arm each include two radiators arranged along a straight line and a connector arranged between the radiators. The connector is configured for disconnecting or connecting the two radiators in respective radiation arms. In the first radiation arm and the second radiation arm, the radiator close to the other radiation arm is configured for connecting to a feeding unit. The radiators of the first radiation arm and the radiators of the second radiation arm are symmetrically arranged. In some implementations, each of the radiation arms of the half-wave dipole includes two radiators which can be connected to or disconnected from each other. When the two radiators are disconnected from each other, the radiation arm has one effective radiator. When the two radiators are connected to each other, the radiation arm has two effective radiators. The radiation frequency of one effective radiator is different from the radiation frequency of two effective radiators, so that the operating band of the radiation arm can cover two bands, which increases the operating bandwidth of the half-wave dipole and reduces the costs required for achieving multi-band coverage.

Embodiment Three

According to an embodiment of the present disclosure, an antenna is provided, The antenna includes at least one half-wave dipole according to any one of Embodiment one and Embodiment two described above.
According to an embodiment of the present disclosure, a half-wave dipole assembly is provided. The half-wave dipole assembly includes at least one half-wave dipole according to any one of Embodiment one and Embodiment two described above.
When the half-wave dipole assembly includes two half-wave dipoles, the radiation arms of a first half-wave dipole may be respectively perpendicular to the radiation arms of a second half-wave dipole.
When the angle between the first radiation arm 10 and the second radiation arm 20 of each half-wave dipole is 90 degrees or 180 degrees, and the half-wave dipole assembly includes two half-wave dipoles, the two half-wave dipoles may form a criss-cross pattern. For example, referring to FIG. 7-1, the angle between the first radiation arm and the second radiation arm of each half-wave dipole is 90 degrees, and a first half-wave dipole 701 and a second half-wave dipole 702 form a criss-cross pattern.
When the angle between the first radiation arm 10 and the second radiation arm 20 of each half-wave dipole is 90 degrees, and the half-wave dipole assembly includes two half-wave dipoles, the two half-wave dipoles may form a rectangular pattern. For example, referring to FIG. 7-2, the angle between the first radiation arm and the second radiation arm of each half-wave dipole is 90 degrees, and a first half-wave dipole 703 and a second half-wave dipole 704 forms a rectangular pattern.
When the angle between the first radiation arm 10 and the second radiation arm 20 of each half-wave dipole is 90 degrees or 180 degrees, and the half-wave dipole assembly includes four half-wave dipoles, the four half-wave dipoles may form a rectangular pattern. For example, referring to FIG. 8-1, the angle between the first radiation arm and the second radiation arm of each half-wave dipole is 180 degrees, and a half-wave dipole 801, a half-wave dipole 802, a half-wave dipole 803, and a half-wave dipole 804 form a rectangular pattern. Referring to FIG. 8-2, the angle between the first radiation arm and the second radiation arm of each half-wave dipole is 90 degrees, and a half-wave dipole 805, a half-wave dipole 806, a half-wave dipole 807, and a half-wave dipole 808 form a rectangular pattern.
Embodiments of the present disclosure provide a half-wave dipole assembly and an antenna. The half-wave dipole assembly and the antenna each include at least one half-wave dipole described below. The half-wave dipole includes a first radiation arm and a second radiation arm. The first radiation arm and the second radiation arm each include two radiators arranged along a straight line and a connector arranged between the radiators. The connector is configured for disconnecting or connecting the two radiators in respective radiation arms. In the first radiation arm and the second radiation arm, the radiator close to the other radiation arm is configured for connecting to a feeding unit. The radiators of the first radiation arm and the radiators of the second radiation arm are symmetrically arranged. In some implementations, each of the radiation arms of the half-wave dipole includes two radiators which can be connected to or disconnected from each other. When the two radiators are disconnected from each other, the radiation arm has one effective radiator. When the two radiators are connected to each other, the radiation arm has two effective radiators. The radiation frequency of one effective radiator is different from the radiation frequency of two effective radiators, so that the operating band of the radiation arm can cover two bands, which increases the operating bandwidth of the half-wave dipole. The half-wave dipole assembly and antenna including at least one half-wave dipole have a wider operating bandwidth. Therefore, the costs required for achieving multi-band coverage are reduced.

Embodiment Four

For a better understanding of the present disclosure, an embodiment of the present disclosure provides a half-wave dipole whose operating bands include 700-1000 MHz and 1700-2700 MHz. Referring to FIG. 9-1, the half-wave dipole includes four radiators and two reactive wires. A first radiator 101 and a second radiator 102 are arranged along a same straight line, a first reactive wire 103 is arranged between the first radiator 101 and the second radiator 102, and two stages of the first reactive wire 103 are respectively connected to the first radiator 101 and the second radiator 102, to form a first radiation arm 10. A third radiator 201 and a fourth radiator 202 are arranged along a same straight line, a second reactive wire 203 is arranged between the third radiator 201 and the fourth radiator 202, and two stages of the second reactive wire 203 are respectively connected to the third radiator 201 and the fourth radiator 202, to form a second radiation arm 20. In addition, the first radiator 101 and the fourth radiator 202 are symmetrically arranged (that is, the first radiator 101 and the fourth radiator 202 are identical, and the positions of the first radiator 101 and the fourth radiator 202 are symmetrical). The second radiator 102 and the third radiator 201 are symmetrically arranged (that is, the second radiator 102 and the third radiator 201 are identical, and the positions of the second radiator 102 and the third radiator 201 are symmetrical). The second radiator 102 in the first radiation arm 10 is close to the second radiation arm 20. The third radiator 201 in the second radiation arm 20 is close to the first radiation arm 10. The second radiator 102 and the third radiator 201 are configured to connect to a feeding unit (not shown). An angle between the first radiation arm 10 and the second radiation arm 20 is 180 degrees.
The first radiator 101, the second radiator 102, the third radiator 201, and the fourth radiator 202 are metal radiators, and have the same width, which is 5-12 mm. The first radiator 101 and the fourth radiator 202 have a length of 56 mm. The second radiator 102 and the third radiator 201 have a length of 34 mm. The first reactive wire 103 has a length of 90.3 mm. A distance between the two stages of the first reactive wire 103 is 1-3 mm. When a frequency of a signal inputted to the first reactive wire 103 is 1700-2700 MHz, the two stages of the first reactive wire 103 are in a state of being disconnected from each other. When a frequency of a signal inputted to the first reactive wire 103 is 700-1000 MHz, the two stages of the first reactive wire 103 are in a state of being connected to each other. The first reactive wire 103 is identical to the second reactive wire 203.
In an embodiment of the present disclosure, the radiators of the half-wave dipole may be made from a 2 mm thick FR4 printed circuit board (PCB), with a copper layer on one side being completely etched away, and a copper layer on the other side being etched according to the size of the half-wave dipole.
An embodiment of the present disclosure also provides a half-wave dipole assembly. As shown in FIG. 9-2, the half-wave dipole assembly includes two half-wave dipoles as shown in FIG. 9-1, and the two half-wave dipoles form a criss-cross pattern.
Embodiments of the present disclosure provide a half-wave dipole and a half-wave dipole assembly. The half-wave dipole includes a first radiation arm and a second radiation arm. The first radiation arm and the second radiation arm each include two radiators arranged along a straight line and a connector arranged between the radiators. The connector is configured for disconnecting or connecting the two radiators in respective radiation arms. In the first radiation arm and the second radiation arm, the radiator close to the other radiation arm is configured for connecting to a feeding unit. The radiators of the first radiation arm and the radiators of the second radiation arm are symmetrically arranged. In some implementations, each of the radiation arms of the half-wave dipole includes two radiators which can be connected to or disconnected from each other. When the two radiators are disconnected from each other, the radiation arm has one effective radiator. When the two radiators are connected to each other, the radiation arm has two effective radiators. The radiation frequency of one effective radiator is different from the radiation frequency two effective radiators, so that the operating band of the radiation arm can cover two bands, which increases the operating bandwidth of the half-wave dipole. The half-wave dipole assembly including the half-wave dipole has a wider operating bandwidth. Therefore, the costs required for achieving multi-band coverage are reduced.

Embodiment Five

For a better understanding of the present disclosure, an embodiment of the present disclosure provides a half-wave dipole whose operating frequencies include 900 MHz and 1800 MHz. Referring to FIG. 10-1, the half-wave dipole includes four radiators and two reactive wires. A first radiator 101 and a second radiator 102 are arranged along a same straight line, a first reactive wire 103 is arranged between the first radiator 101 and the second radiator 102, and two stages of the first reactive wire 103 are respectively connected to the first radiator 101 and the second radiator 102, to form a first radiation arm. A third radiator 201 and a fourth radiator 202 are arranged along a same straight line, a second reactive wire 203 is arranged between the third radiator 201 and the fourth radiator 202, and two stages of the second reactive wire 203 are respectively connected to the third radiator 201 and the fourth radiator 202, to form a second radiation arm. In addition, the first radiator 101 and the fourth radiator 202 are symmetrically arranged (that is, the first radiator 101 and the fourth radiator 202 are identical, and the positions of the first radiator 101 and the fourth radiator 202 are symmetrical). The second radiator 102 and the third radiator 201 are symmetrically arranged (that is, the second radiator 102 and the third radiator 201 are identical, and the positions of the second radiator 102 and the third radiator 201 are symmetrical). The second radiator 102 in the first radiation arm is close to the second radiation arm. The third radiator 201 in the second radiation arm is close to the first radiation arm. The second radiator 102 and the third radiator 201 are configured to connect to the feeding unit 30. An angle between the first radiation arm and the second radiation arm is 90 degrees.
The first radiator 101, the second radiator 102, the third radiator 201, and the fourth radiator 202 are identical and have a length of 41.7 mm. The first reactive wire 103 has a length of 56.8 mm. The first reactive wire 103 is a semi-steel cable having an inner conductor and an outer conductor respectively connected to the first radiator 101 and the second radiator 102. When a signal inputted to the first reactive wire 103 has a frequency of 1800 MHz, the two stages (i.e., the inner conductor and the outer conductor) of the first reactive wire 103 are disconnected from each other. When a signal inputted to the first reactive wire 103 has a frequency of 900 MHz, the two stages of the first reactive wire 103 are connected to each other. The first reactive wire 103 and the second reactive wire 203 are identical.
An embodiment of the present disclosure further provides a half-wave dipole assembly which, as shown in FIG. 10-2, includes four half-wave dipoles as shown in FIG. 10-1. The four half-wave dipoles form a rectangular pattern. The half-wave dipole assembly further includes a support member 40 configured for supporting the radiators. The support member 40 may be of a non-metallic material.
According to the half-wave dipole, the half-wave dipole assembly, and the antenna provided by the embodiments of the present disclosure, the half-wave dipole includes: a first radiation arm and a second radiation arm. The first radiation arm and the second radiation arm each include two radiators arranged along a straight line and a connector arranged between the radiators. The connector is configured for disconnecting or connecting the two radiators in respective radiation arms. In the first radiation arm and the second radiation arm, the radiator close to the other radiation arm is configured for connecting to a feeding unit. The radiators of the first radiation arm and the radiators of the second radiation arm are symmetrically arranged. In some implementations, each of the radiation arms of the half-wave dipole includes two radiators which can be connected to or disconnected from each other. When the two radiators are disconnected from each other, the radiation arm has one effective radiator. When the two radiators are connected to each other, the radiation arm has two effective radiators. The radiation frequency of one effective radiator is different from the radiation frequency of two effective radiators, so that the operating band of the radiation arm can cover two bands, which increases the operating bandwidth of the half-wave dipole. The half-wave dipole assembly including the half-wave dipole has a wider operating bandwidth. Therefore, the costs required for achieving multi-band coverage are reduced.
The foregoing is a further detailed description of the present disclosure in conjunction with specific embodiments, and it should not be considered that the specific implementation of the present disclosure is limited thereto. Some simple deductions or replacements can be made by those having ordinary skill in the art to which the present disclosure pertains without departing from the conception of the present disclosure, which are all regarded as falling within the protection scope of the present disclosure.

Claims

A half-wave dipole, comprising: a first radiation arm and a second radiation arm, wherein:
the first radiation arm and the second radiation arm each comprise two radiators arranged along a straight line and a connector arranged between the radiators, and the connector is configured for disconnecting or connecting the two radiators in respective radiation arms;

in the first radiation arm and the second radiation arm, the radiator close to the other radiation arm is configured for connecting to a feeding unit; and

the radiators of the first radiation arm and the radiators of the second radiation arm are symmetrically arranged.
The half-wave dipole of claim 1, wherein an angle between the first radiation arm and the second radiation arm is greater than or equal to 90 degrees and less than or equal to 180 degrees.
The half-wave dipole of claim 2, wherein the angle between the first radiation arm and the second radiation arm is 90 degrees or 180 degrees.
The half-wave dipole of claim 1, wherein the two radiators comprised in the first radiation arm are identical, and the two radiators comprised in the second radiation arm are identical.
The half-wave dipole of claim 1, wherein the connector in the first radiation arm has the same state as the connector in the second radiation arm.
The half-wave dipole of any one of claims 1 to 5, wherein the connectors are reactive wires, two stages of the reactive wire of the first radiation arm are respectively connected to the two radiators in the first radiation arm, and two stages of the reactive wire of the second radiation arm are respectively connected to the two radiators in the second radiation arm; in response to a frequency of a signal inputted to the reactive wire being in a first band, the two stages of the reactive wire are in a connected state; and in response to the frequency of the signal inputted to the reactive wire being in a second band, the two stages of the reactive wire are in a disconnected state.
The half-wave dipole of any one of claims 1 to 5, wherein the connectors are switches.
A half-wave dipole assembly, comprising at least one half-wave dipole of any one of claims 1 to 7.
The half-wave dipole assembly of claim 8, wherein in response to the angle between the first radiation arm and the second radiation arm being 90 degrees or 180 degrees, the half-wave dipole assembly comprises two half-wave dipoles, and the two half-wave dipoles form a criss-cross pattern.
The half-wave dipole assembly of claim 8, wherein in response to the angle between the first radiation arm and the second radiation arm being 90 degrees or 180 degrees, the half-wave dipole assembly comprises four half-wave dipoles, and the four half-wave dipoles form a rectangular pattern.
An antenna, comprising at least one half-wave dipole of any one of claims 1 to 7.