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Multiple-input multiple-output antenna transmitting-receiving circuit

A transceiver circuit, multi-output technology, applied in diversity/multi-antenna system, space transmit diversity and other directions, can solve the damage of low-noise amplifier or radio frequency transceiver, transmit/receive switch cannot achieve high isolation, affect antenna transmit power, etc. question

Inactive Publication Date: 2015-09-30
AMBIT MICROSYSTEMS (SHANGHAI) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the multiple-input multiple-output antenna transceiver circuit, a transmit / receive switch is usually set at the receiving end of the antenna to switch between the transmit path and the receive path. Since the transmit / receive switch usually cannot meet the requirements of high isolation, when the radio frequency transceiver When the radio frequency signal to be transmitted to the antenna via the power amplifier, the transmitted radio frequency signal will be coupled to the receiving path and cause damage to the low noise amplifier or radio frequency transceiver. There is also radiation interference between each other, which in turn affects the transmit power of the antenna

Method used

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  • Multiple-input multiple-output antenna transmitting-receiving circuit

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Embodiment Construction

[0030] figure 1 It is a block diagram of the MIMO antenna transceiver circuit 100 in an embodiment of the present invention. In this embodiment, the MIMO antenna transceiver circuit 100 includes a radio frequency transceiver 10 and a plurality of transceiver units 20a, 20b, 20c (in this embodiment, only three are used as an example, but not limited to three , can contain less than or more than three transceiver units) to realize the transmission or reception of multiple signals. Each transceiver unit 20 a , 20 b , 20 c includes a power amplifier 202 , a low noise amplifier 204 , a first switch unit 206 , a second switch unit 208 and an antenna 210 . The power amplifier 202 is electrically connected to the radio frequency transceiver 10 , and the power amplifier 202 amplifies the power of the signal output by the radio frequency transceiver 10 to be transmitted through the antenna 210 . The low noise amplifier 204 is electrically connected to the radio frequency transceiver 1...

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Abstract

The invention discloses a multiple-input multiple-output antenna transmitting-receiving circuit, and the circuit comprises a radio frequency transmitter and a plurality of transmitting-receiving units. Each transmitting-receiving unit comprises an antenna, a power amplifier, a low-noise amplifier, a first switching unit, and a second switching unit. The power amplifier is used for the power amplification of a to-be-transmitted signal outputted by the radio frequency transmitter, so as to transmit the to-be-transmitted signal. The low-noise amplifiers are used for the amplification of radio frequency signals received by the antennas, so as to transmit the radio frequency signals to a radio frequency transceiver. The first switching units and the second switching units are used for switching a transmitting path according to the transmitting-receiving state of the radio frequency transceiver. The circuit is additionally provided with the switching units so as to achieve the switching of the transmitting path, thereby achieving the isolation of the transmitting path with a receiving path, effectively inhibiting harmonic interference generated between the transmitting path and the receiving path, and improving the isolation degree of adjacent antennas.

Description

technical field [0001] The invention relates to a multiple-input multiple-output antenna transceiver circuit, in particular to a multiple-input multiple-output antenna transceiver circuit that uses switches to increase antenna isolation. Background technique [0002] In the multiple-input multiple-output antenna transceiver circuit, a transmit / receive switch is usually set at the receiving end of the antenna to switch between the transmit path and the receive path. Since the transmit / receive switch usually cannot meet the requirements of high isolation, when the radio frequency transceiver When the radio frequency signal to be transmitted to the antenna via the power amplifier, the transmitted radio frequency signal will be coupled to the receiving path and cause damage to the low noise amplifier or radio frequency transceiver. There is also radiation interference between them, which in turn affects the transmit power of the antenna. Therefore, it has become a major researc...

Claims

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Application Information

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IPC IPC(8): H04B7/04
Inventor 郑光伟
Owner AMBIT MICROSYSTEMS (SHANGHAI) LTD
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