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wireless transceiver

A technology of wireless transceiver device and receiving circuit, which is applied in the field of radio frequency front-end, can solve the problems such as the decrease of linearity of receiving circuit, and achieve the effect of improving linearity and making circuit design more flexible

Active Publication Date: 2022-03-11
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when designing for different gain settings, linearity may be limited by the off-state switching elements in parallel with the signal path, which will suffer when receiving larger power signals. The effect of large signal swing leads to a decrease in the linearity of the receiving circuit, especially for middle-gain signals

Method used

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Examples

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Embodiment Construction

[0040] figure 1 is a schematic block diagram of an embodiment of a wireless transceiver device according to the present disclosure, please refer to figure 1 As shown, the wireless transceiver device 10 includes an antenna unit 12 , a first matching unit 14 , a receiving circuit 16 , a second matching unit 18 , a bypass coupling circuit 20 and a transmitting circuit 22 . The antenna unit 12 is used to receive a first radio frequency signal or transmit a second radio frequency signal, wherein the antenna unit 12 further includes an antenna 121 and a switch circuit 122, and the antenna 121 is electrically connected to the switch circuit 122 to utilize the switch circuit 122 Switch signal transmission mode or signal reception mode. The first matching unit 14 is electrically connected to the antenna unit 12 and the receiving circuit 16, the receiving circuit 16 is further electrically connected to the analog-to-digital conversion circuit 24 at the back end, and the analog-to-digit...

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PUM

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Abstract

The present disclosure provides a wireless transceiver device, which includes an antenna unit capable of receiving a first radio frequency signal or transmitting a second radio frequency signal. A first matching unit is electrically connected to the antenna unit and a receiving circuit. The first matching unit and the receiving circuit form a first signal receiving channel for receiving the first radio frequency signal when the first radio frequency signal is a high or low gain radio frequency signal. A second matching unit is electrically connected to the antenna unit and a transmitting circuit, and the second matching unit and the transmitting circuit form a signal transmitting channel for transmitting the second radio frequency signal. A bypass coupling circuit is electrically connected to the receiving circuit and the second matching unit, and the second matching unit, the bypass coupling circuit and the receiving circuit form a second signal receiving channel for receiving when the first radio frequency signal is a medium-gain radio frequency signal. a first radio frequency signal.

Description

technical field [0001] The present disclosure relates to a radio frequency (RF) front-end technology, in particular to a wireless transceiver device with good linearity. Background technique [0002] In the existing radio frequency transceiver circuit, it is mainly composed of a transmitting circuit (TX) and a receiving circuit (RX). These two circuits are usually designed separately and combined with an antenna through an appropriate matching unit to transmit or receive radio frequency signals. . [0003] In order to achieve a wide receive power range, there are various options to attenuate or boost the signal power in the receive circuit. However, when designing for different gain settings, linearity may be limited by the off-state switching elements in parallel with the signal path, which will suffer when receiving larger power signals. The effect of large signal swing leads to a decrease in the linearity of the receiving circuit, especially for middle-gain signals. C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/401H04B1/44H04B1/16H04B1/18
CPCH04B1/401H04B1/44H04B1/16H04B1/18
Inventor 陈家源施冠宇李珈谊
Owner REALTEK SEMICON CORP