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Switching circuit, radio switching circuit, and switching method thereof

A switching circuit and radio frequency switching technology, which is applied in the direction of electrical components, electronic switches, transmission systems, etc., to achieve the effect of improving operable power and reliability, and improving reliability

Inactive Publication Date: 2014-05-21
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of a feedforward capacitor will cause the first and last transistors connected in series to share a large AC voltage, and thus face reliability problems. say, is an important question

Method used

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  • Switching circuit, radio switching circuit, and switching method thereof
  • Switching circuit, radio switching circuit, and switching method thereof
  • Switching circuit, radio switching circuit, and switching method thereof

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Embodiment Construction

[0026] The detailed features and advantages of the present invention are described in detail below in the embodiments, the content of which is sufficient for any person skilled in the art to understand the technical content of the present invention and implement it accordingly, and according to the contents disclosed in this specification, claims and accompanying drawings, The related objects and advantages of the present invention can be easily understood by anyone skilled in the art. The following examples further illustrate the viewpoints of the present invention in detail, but are not intended to limit the scope of the present invention in any respect.

[0027] Please refer to " image 3 ′, which is a circuit diagram of a switching circuit 30. The switching circuit 30 includes a transistor 100 , a first switching element 121 , a second switching element 122 , a first resistor 111 and a second resistor 112 .

[0028] As shown in the figure, the transistor 100 includes a g...

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Abstract

The present disclosure discloses a radio frequency switching circuit including an antenna terminal, a transmitter terminal, a receiver terminal, a first switching module, a second switching module, a first switching component, and a second switching component. The first switching module is connected between the antenna terminal and the transmitter terminal. The second switching module is connected between the antenna terminal and the receiver terminal. The first and second switching modules include several transistors respectively, and each of the transistors includes a gate terminal, a drain terminal, a source terminal, and a bulk. The first switching component has a first anode terminal connecting with the gate terminal, and a first cathode terminal connecting with the drain terminal. The second switching component has a second anode terminal connecting with the gate terminal, and a second cathode terminal connecting with the source terminal.

Description

technical field [0001] The invention relates to a switcher, in particular to a switch circuit, a radio frequency switch circuit and a switch method thereof. Background technique [0002] In a wireless communication system, the RF switcher of the RF front-end is a key element. In a single radio frequency system, a SPDT RF switcher is used to switch the two signal paths from the transmitter to the antenna and from the antenna to the receiver; in a modern multi-frequency and multi-mode wireless system, a SPDM RF switcher The switch is further responsible for switching between different communication systems. [0003] " figure 1 』is a traditional RF switcher 10 architecture, in which transistors Q1 and Q2 connected in series are responsible for the switching of two signal paths, and the function of transistors Q3 and Q4 connected in parallel is to improve isolation, and the gate terminal of each transistor is connected to a resistor R , when the path from the antenna terminal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/44
CPCH03K17/693H03K2217/0054
Inventor 陈正中
Owner IND TECH RES INST