A dual-polarized antenna and a mimo antenna with the dual-polarized antenna

Abstract

The invention relates to a dual-polarization antenna. The dual-polarization antenna comprises a first dielectric substrate, a first feeder line, a second feeder line, a metal sheet and a second dielectric substrate, wherein the metal sheet is attached to one surface of the first dielectric substrate; the second dielectric substrate covers the metal sheet; the first feeder line and the second feeder line are both fed into the metal sheet in the coupling way; the metal sheet is provided with a microgroove structure in a hollowing way to form a metal route on the metal sheet; and an antenna is previously provided with a space for being embedded by an electric element. According to the dual-polarization antenna disclosed by the invention, the antenna needs to both receive or transmit electromagnetic waves through the second dielectric substrate so that the integral distributed capacitance of the antenna is enlarged, and the working frequency of the antenna can be effectively reduced through the enlargement of the integral distributed capacitance, and therefore, the antenna can still well work at low frequency under the condition that the lengths of the feeder lines are not changed and the requirements of the antenna on small size, low working frequency, wide band and multimode are met. Besides, the invention also relates to an MIMO (Multiple Input Multiple Output) antenna with the dual-polarization antenna.

Description

technical field

[0001] The invention belongs to the communication field, and in particular relates to a dual-polarization antenna and a MIMO antenna with the dual-polarization antenna. Background technique

[0002] The dual-polarized antenna is a new type of antenna technology. The traditional dual-polarized antenna combines +45° and -45° two antennas with orthogonal polarization directions and works in the duplex mode of transmission and reception at the same time, so its The most prominent advantage is to save the number of antennas of a single directional base station; the directional base station (three sectors) of the general GSM digital mobile communication network will use 9 antennas, and each sector will use 3 antennas (space diversity, one transmission and two receptions), If a dual-polarized antenna is used, only one antenna is required for each sector; at the same time, due to the dual-polarized antenna, the polarization orthogonality of ±45° can ensure the isolat...

Examples

Embodiment 2

[0045] Such as image 3 As shown, in this embodiment, spaces 53 and 54 for embedding capacitive electronic components are preset between the first feeder 2 and the metal sheet 4, and between the second feeder 3 and the metal sheet 4. The preset embedding The position of the electronic component space can be any position between the first feeder 2 and the metal sheet 4 , and between the second feeder 3 and the metal sheet 4 . image 3 The middle space 53 and the space 54 are spaces for embedding capacitive electronic components in this embodiment. There is a certain capacitance between the first feeder 2, the second feeder 3 and the metal sheet 4. Here, the first feeder 2, the second feeder 3 and the metal sheet 4 are adjusted by embedding capacitive electronic components. The signal coupling between the feeder 2, the second feeder 3 and the metal sheet 4 uses the formula: It can be seen that the capacitance value is inversely proportional to the square of the operating frequ...

Embodiment 3

[0047] Such as Figure 4 As shown, in this embodiment, a space for embedding inductive electronic components and / or resistors is reserved on the metal wiring 42 of the metal sheet, and the space for embedding electronic components is not limited to the space 55 and the space given in the figure 56. Other positions are acceptable as long as the conditions are met. The purpose of embedding inductive electronic components here is to increase the inductance value of the resonant structure inside the metal sheet, thereby adjusting the resonant frequency and working bandwidth of the antenna; same as the first embodiment, the purpose of embedding resistors here is to improve the antenna's radiation resistance. As for embedding inductive electronic components or resistors, it depends on the needs. In addition, wires are used to short-circuit in the space where electronic components are not embedded.

Embodiment 4

[0049] Such as Figure 5 As shown, in this embodiment, a space for embedding capacitive electronic components is reserved on the microgroove structure 41 , and the space connects the metal wires 42 on both sides of the microgroove structure 41 . The space for embedding electronic components is not limited only to the Figure 5 The space 57 given in , other locations are all available as long as the conditions are met. Embedding capacitive electronic components can change the resonance performance of the metal sheet, and ultimately improve the Q value and resonance operating point of the antenna. As common knowledge, we know that the relationship between the passband BW, the resonant frequency w0 and the quality factor Q is: BW=wo / Q, this formula shows that the larger Q is, the narrower the passband is, and the smaller Q is, the wider the passband is. In addition: Q=wL / R=1 / wRC, wherein, Q is the quality factor; w is the power frequency when the circuit resonates; L is the ind...

technical field

[0001] The invention belongs to the communication field, and in particular relates to a dual-polarization antenna and a MIMO antenna with the dual-polarization antenna. Background technique

[0002] The dual-polarized antenna is a new type of antenna technology. The traditional dual-polarized antenna combines +45° and -45° two antennas with orthogonal polarization directions and works in the duplex mode of transmission and reception at the same time, so its The most prominent advantage is to save the number of antennas of a single directional base station; the directional base station (three sectors) of the general GSM digital mobile communication network will use 9 antennas, and each sector will use 3 antennas (space diversity, one transmission and two receptions), If a dual-polarized antenna is used, only one antenna is required for each sector; at the same time, due to the dual-polarized antenna, the polarization orthogonality of ±45° can ensure the isolat...

Examples

Embodiment 2

[0045] Such as image 3 As shown, in this embodiment, spaces 53 and 54 for embedding capacitive electronic components are preset between the first feeder 2 and the metal sheet 4, and between the second feeder 3 and the metal sheet 4. The preset embedding The position of the electronic component space can be any position between the first feeder 2 and the metal sheet 4 , and between the second feeder 3 and the metal sheet 4 . image 3 The middle space 53 and the space 54 are spaces for embedding capacitive electronic components in this embodiment. There is a certain capacitance between the first feeder 2, the second feeder 3 and the metal sheet 4. Here, the first feeder 2, the second feeder 3 and the metal sheet 4 are adjusted by embedding capacitive electronic components. The signal coupling between the feeder 2, the second feeder 3 and the metal sheet 4 uses the formula: It can be seen that the capacitance value is inversely proportional to the square of the operating frequ...

Embodiment 3

[0047] Such as Figure 4 As shown, in this embodiment, a space for embedding inductive electronic components and / or resistors is reserved on the metal wiring 42 of the metal sheet, and the space for embedding electronic components is not limited to the space 55 and the space given in the figure 56. Other positions are acceptable as long as the conditions are met. The purpose of embedding inductive electronic components here is to increase the inductance value of the resonant structure inside the metal sheet, thereby adjusting the resonant frequency and working bandwidth of the antenna; same as the first embodiment, the purpose of embedding resistors here is to improve the antenna's radiation resistance. As for embedding inductive electronic components or resistors, it depends on the needs. In addition, wires are used to short-circuit in the space where electronic components are not embedded.

Embodiment 4

[0049] Such as Figure 5 As shown, in this embodiment, a space for embedding capacitive electronic components is reserved on the microgroove structure 41 , and the space connects the metal wires 42 on both sides of the microgroove structure 41 . The space for embedding electronic components is not limited only to the Figure 5 The space 57 given in , other locations are all available as long as the conditions are met. Embedding capacitive electronic components can change the resonance performance of the metal sheet, and ultimately improve the Q value and resonance operating point of the antenna. As common knowledge, we know that the relationship between the passband BW, the resonant frequency w0 and the quality factor Q is: BW=wo / Q, this formula shows that the larger Q is, the narrower the passband is, and the smaller Q is, the wider the passband is. In addition: Q=wL / R=1 / wRC, wherein, Q is the quality factor; w is the power frequency when the circuit resonates; L is the ind...

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