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Attenuator circuit and radio frequency front-end architecture

An attenuator and circuit technology, applied in the field of radio frequency, can solve the problems of excessive parasitic capacitance and poor attenuation performance, and achieve the effect of reducing parasitic capacitance and optimizing attenuation performance

Active Publication Date: 2020-11-17
RADROCK (SHENZHEN) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an attenuator circuit and a radio frequency front-end architecture to solve the problem of poor attenuation performance due to excessive parasitic capacitance in the prior art

Method used

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  • Attenuator circuit and radio frequency front-end architecture
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  • Attenuator circuit and radio frequency front-end architecture

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Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0049] The present invention provides an attenuator circuit, comprising an input node; an output node; a first common attenuation module and a gate attenuation module connected in series, wherein the first end of the first common attenuation module is connected to the input node or the In the output node, the first public attenuation module is configured to attenuate signals, and the gated attenuation module includes an optional bypass branch and at least one attenuation branch. By connecting a common attenuation module in series, the connection relationship between the original attenuation branche...

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Abstract

The invention provides an attenuator circuit. The attenuator circuit comprises: an input node; an output node; a first common attenuation module, wherein the first common attenuation module is configured to attenuate signals, the first end of the first common attenuation module is connected to the input node or the output node, and the second end of the first common attenuation module is connectedto a gating attenuation module; and the gating attenuation module which comprises a selectable bypass branch and at least one attenuation branch, wherein the gating attenuation module is connected with the first common attenuation module in series. The parasitic capacitance of the attenuator circuit is effectively reduced, and the problem of poor attenuation performance caused by overlarge parasitic capacitance in the prior art is solved.

Description

technical field [0001] The invention relates to the field of radio frequency technology, in particular to an attenuator circuit and a radio frequency front-end architecture. Background technique [0002] In radio frequency (Radio Frequency, referred to as RF) electronic applications, radio frequency front-end technology is widely used in remote sensing equipment, wireless communication equipment, radar equipment, portable ultrasonic equipment and other equipment. Wherein, an attenuator circuit is included in some radio frequency front-end architectures, and the attenuator circuit is used to attenuate signals. [0003] figure 1 It is an attenuator circuit used in a radio frequency front-end architecture in the prior art, and the attenuator circuit includes a bypass path and an attenuation path. Among them, the branch path that does not pass through the attenuator, such as figure 1 The path 1 in is the bypass path; the branch path that needs to pass through the attenuator, ...

Claims

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Application Information

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IPC IPC(8): H03H7/24
CPCH03H7/24
Inventor 宋楠倪建兴胡自洁倪楠曹原奉靖皓
Owner RADROCK (SHENZHEN) TECH CO LTD
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