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Antenna unit and multi-input and multi-output antenna system

An antenna unit and antenna system technology, applied in antennas, antenna arrays, antenna combinations with different interactions, etc., can solve the problems of shortening the communication range, reducing the signal-to-noise ratio of the received signal, and reducing the receiving sensitivity of the receiver, and achieving leakage The effect of signal and near-field interference signal cancellation

Inactive Publication Date: 2017-09-08
NANNING FUGUI PRECISION IND CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The above problems will lead to a decrease in the signal-to-noise ratio of the received signal, that is, reduce the receiving sensitivity of the receiver, shorten the communication range, reduce the communication range of useful signals, and may generate intermodulation signals to increase interference and power consumption

Method used

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  • Antenna unit and multi-input and multi-output antenna system
  • Antenna unit and multi-input and multi-output antenna system

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Embodiment Construction

[0029] Please refer to figure 1 , the MIMO antenna system 1000 of the present invention includes a first antenna unit 100 , a second antenna unit 200 and a system controller 300 .

[0030] The first antenna unit 100 includes a first transmitter 11, a first amplifier 21, a second amplifier 22, a first coupler 31, a second coupler 32, a third coupler 33, a first circulator 41, a first Electronic switch 51, first antenna 61, first compensation circuit 71, second compensation circuit 72, first noise suppression circuit 81, first receiver 91, first power combiner 101, resistor R1, resistor R2 and resistor R3 .

[0031] The first terminal 1 of the first transmitter 11 is connected to the first input terminal 1 of the first amplifier 21 . The first terminal 1 of the first transmitter 11 is also connected to the first terminal 1 of the first electronic switch 51 . The second terminal 2 of the first transmitter 11 is connected to the first terminal 1 of the system controller 300 . ...

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Abstract

The invention provides a multi-input and multi-output antenna system, which comprises a first antenna unit and a second antenna unit. The first antenna unit includes a first transmitter, a first receiver, a first circulator, a first compensation circuit, a second compensation circuit, a first antenna and a first electronic switch. The second antenna unit comprises a second transmitter, a second receiver, a second circulator, a third compensation circuit, a fourth compensation circuit, a second antenna and a second electronic switch. The first compensation circuit and the third compensation circuit are used for resisting and reducing leakage signals. The second compensation circuit and the fourth compensation circuit are used for resisting and reducing near-field interference signals. The multi-input and multi-output antenna system can effectively resist and reduce the noise.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an antenna unit, and also to a multiple-input multiple-output antenna system using the antenna unit. Background technique [0002] Transceiver systems such as continuous wave radar and RFID usually use a single antenna for interference suppression, which has several disadvantages, such as large receiving circuit loss, high noise index, low transmission efficiency due to the combination of coupler and combiner, and high resolution High-degree phase shifters and attenuators cause cost increases, etc. [0003] Some existing dual-antenna technologies can effectively improve the above-mentioned problems, but the dual-antenna still needs to face the problem of interference from short-distance obstacles. The reflected echo of a short-distance obstacle is about 30dB lower than the transmitted wave, and more than 20dB higher than the long-distance reflected signal. The above proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q23/00H01Q21/00H01Q21/29
Inventor 翁国执
Owner NANNING FUGUI PRECISION IND CO LTD
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