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RF front-end circuits and systems

A radio frequency front-end and circuit technology, applied in the transmission system, electrical components, transmission noise suppression, etc., can solve the problems of noise attenuation, non-use of wireless communication, etc., and achieve the effect of eliminating noise and improving communication quality

Active Publication Date: 2016-04-13
SUZHOU HUASHI WIRELESS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since in actual work, the received radio frequency signal or the transmitted radio frequency signal is transmitted through the second switch 14, this will inevitably introduce some unnecessary noise and unnecessary attenuation, thereby not utilizing the communication between the two sides of the wireless communication.

Method used

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  • RF front-end circuits and systems
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  • RF front-end circuits and systems

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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of this embodiment, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0037] The invention discloses a structure of a radio frequency front-end circuit, such as figure 2 shown, including:

[0038] toggle switch 21;

[0039] Specifically, the switch 21 may be a radio frequency switch;

[0040] An attenuator 22 and a filter 23 connected to the switch 21 respectively;

[0041] Specifically, the filter 23 may be a bandpass filter;

[0042] A power amplifier 24 connected to the attenuator 22;

[0043] A transmitting...

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PUM

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Abstract

The invention discloses a radio-frequency front end circuit and system. The radio-frequency front end circuit comprises a diverter switch, an attenuator, a filter, a power amplification device, a transmitting antenna, a low-noise amplifier and a receiving antenna, wherein the attenuator and the filter are respectively connected with the diverter switch, the power amplification device is connected with the attenuator, the transmitting antenna is connected with the power amplification device, the low-noise amplifier is connected with the filter, and the receiving antenna is connected with the low-noise amplifier. By the adoption of the radio-frequency front end circuit and system, due to the fact that a diverter switch used for controlling the antennas to transmit or receive a wireless radio-frequency signal is not required to be arranged, noise introduced by the diverter switch and unnecessary attenuation can be eliminated, and communication quality of both wireless communication sides is improved.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a radio frequency front-end circuit and system. Background technique [0002] In a wireless communication system, a radio frequency front-end circuit is generally set to amplify a radio frequency signal to be transmitted or a received radio frequency signal, so that both parties in the wireless communication can have better communication quality. [0003] Among them, for the widely used time division duplex TDD wireless communication system, the structure of its RF front-end circuit is as follows figure 2 As shown, it can be seen that the transmitting link 11 and the receiving link 12 share an antenna 13; wherein, the second switch 14 can control the antenna 13 to transmit or receive radio frequency signals. Its specific working process is as follows: [0004] When the second switch 13 was connected with the transmission link 11, it would disconnect the connectio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/40H04B15/00H04B1/44
Inventor 高怀朱向伟李昕丁杰周智俐梁效迪
Owner SUZHOU HUASHI WIRELESS TECH