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A control circuit applied to low power supply voltage radio frequency switch

A radio frequency switch, positive voltage technology, applied in electronic switches, general control systems, program control, etc., can solve problems such as radio frequency switch control, and achieve the effects of reducing the risk of breakdown, easy implementation, and low power consumption

Active Publication Date: 2022-02-01
广州穗源微电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortcomings of the existing technology, the present invention provides a new switch control architecture to solve the control problem of the radio frequency switch when the power supply is powered by low power supply voltage

Method used

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  • A control circuit applied to low power supply voltage radio frequency switch
  • A control circuit applied to low power supply voltage radio frequency switch
  • A control circuit applied to low power supply voltage radio frequency switch

Examples

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Effect test

Embodiment 1

[0030]Embodiment 1: A control circuit applied to a low power supply voltage radio frequency switch: including a ring oscillator, a first inverter, a second inverter, a first non-overlapping clock generation circuit, and a second non-overlapping clock generation circuit Circuit, positive voltage charge pump, negative voltage charge pump, first level conversion circuit and second level conversion circuit. Wherein the output terminal of the ring oscillator is connected with the input terminal of the second inverter through the first inverter, and the output terminals of the first inverter and the second inverter are connected with two of the first non-overlapping clock generation circuit The input terminals are connected, the two output terminals of the first non-overlapping clock generating circuit are connected with the two input terminals of the positive voltage charge pump, the four output terminals of the positive voltage charge pump are respectively connected with the first ...

Embodiment 2

[0031] Embodiment 2: As a further preferred implementation, it includes a ring oscillator, a first inverter, a second inverter, a first non-overlapping clock generation circuit, a second non-overlapping clock generation circuit, and a positive voltage charge pump , Negative voltage charge pump, first level conversion circuit, second level conversion circuit, bandgap reference and low dropout linear regulator. Wherein the output end of the ring oscillator is connected to the input end of the inverter I2 via the inverter I1, and the output ends of the first inverter and the second inverter are connected to the two input ends of the first non-overlapping clock generation circuit The two output terminals of the first non-overlapping clock generation circuit are connected to the two input terminals of the positive voltage charge pump, and the three output terminals of the positive voltage charge pump are respectively connected to the first level conversion circuit and the second non...

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Abstract

The invention discloses a control circuit applied to a low power supply voltage radio frequency switch, comprising a ring oscillator, a first inverter, a second inverter, a first non-overlapping clock generation circuit, and a second non-overlapping clock generation circuit circuit, a positive voltage charge pump, a negative voltage charge pump, a first level shifting circuit and a second level shifting circuit, wherein the three output terminals of the positive voltage charge pump are respectively non-overlapping with the first level shifting circuit and the second level shifting circuit The clock generation circuit and the input terminal of the negative voltage charge pump are connected as a power supply; another structure is disclosed, which also includes a bandgap reference and a low-dropout linear regulator, and the three output terminals of the positive voltage charge pump are respectively It is connected with the input end of the first level conversion circuit, the second non-overlapping clock generation circuit and the low-dropout linear regulator as a power supply. The structure of the invention can realize a low-level driving circuit and control a radio frequency switch, so as to ensure good radio frequency performance when the power supply is low.

Description

technical field [0001] The invention belongs to the field of integrated circuits, in particular to a control circuit applied to low power supply voltage radio frequency switches. Background technique [0002] In a wireless communication transceiver, a high-performance switch is used for signal selection of the transmission path and the reception path, and its insertion loss, power capacity and other performances directly restrict the output power and noise figure performance of the entire system. Positive voltage generators above the supply voltage and negative voltage generators below ground are widely used to increase the dynamic range of handling power, enable efficient switching under DC bias conditions, and reduce quiescent current in the off-state. [0003] Because the charge pump power supply chip is small in size and high in efficiency, it is widely used in the market at present. The charge pump circuit uses the clock pulse to control the switch array to control the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/081H03K17/687
CPCG05B19/0423G05B2219/25257
Inventor 刘小妮刘斌章国豪刘祖华陈哲
Owner 广州穗源微电子科技有限公司
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