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A radio frequency switch circuit

A radio frequency switch and circuit technology, applied in the field of radio frequency, can solve problems such as radio frequency switch harmonics

Active Publication Date: 2022-04-05
RADROCK (SHENZHEN) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a radio frequency switch circuit to solve the harmonic problem existing in the existing radio frequency switch

Method used

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  • A radio frequency switch circuit
  • A radio frequency switch circuit
  • A radio frequency switch circuit

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Embodiment Construction

[0053] 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.

[0054] The present invention provides a radio frequency switch circuit, comprising a series branch, the series branch includes a plurality of switch units connected in series; a plurality of connection nodes on the series branch; a tuning network, one end of the tuning network connected to one of the plurality of connection nodes, the other end of the tuning network is connected to another node of the plurality of connection nodes; an adjustment node arranged in the tuning network, the adjustment node is connected to an external tuner Voltage: the capacitance value generated by the tuning network i...

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Abstract

The present invention provides a radio frequency switch circuit, comprising: a series branch, the series branch includes a plurality of switch units connected in series; a plurality of connection nodes on the series branch; a tuning network, the tuning network One end is connected to one node among the plurality of connection nodes, and the other end of the tuning network is connected to another node among the plurality of connection nodes; an adjustment node arranged in the tuning network, and the adjustment node is connected to an external tuning voltage. The invention tunes the capacitance value generated by the tuning network through the external tuning voltage, effectively reduces the harmonic generated by the radio frequency switch when the radio frequency signal is applied to the radio frequency switch, and realizes the harmonic suppression of the radio frequency switch.

Description

technical field [0001] The invention relates to the field of radio frequency technology, in particular to a radio frequency switch circuit. Background technique [0002] In radio frequency (Radio Frequency, RF for short) electronic applications, complex RF systems impose strict linearity, insertion loss and isolation requirements on transistor-based RF switches. As an important electronic component of a radio frequency transceiver, a transistor-based radio frequency switch usually requires linearity compensation to prevent harmonic distortion caused by a transmit signal being applied to the radio frequency switch when the radio frequency switch is in an off state. However, since the capacitance of each field effect transistor (Field Effect Transistor, FET for short) is relatively small and is almost constant with the voltage, there will be a slight varistor capacitance that will cause the RF switch to generate harmonics, thereby affecting the performance of the RF switch cir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/16
CPCH03K17/165
Inventor 王欢奉靖皓倪建兴王蕴州
Owner RADROCK (SHENZHEN) TECH CO LTD