Radio frequency switch with improved intermodulation...

Details Radio frequency switch with improved intermodulation... Radio frequency switch with improved intermodulation...

2011-08-30

2011-08-30

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S105000

Reexamination Certificate

active

08008988

ABSTRACT:
A radio frequency (RF) switch using a field effect transistor has 2ndorder intermodulation distortion improved through use of a feed forward capacitor electrically connected between the gate and a voltage coupler connected between the source and drain of the FET. With a control voltage provided at the gate through a gate feed resistor for operation of the FET, the feed forward capacitor feeds an RF voltage from the drain terminal and the source terminal to the gate terminal through the gate feed resistor.

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Ranta, Tero, Ella, Juha, and Pohjonen, Helena; Antenna Switch Linearity Requirements for GSM/WCDMA Mobile Phone Front-Ends; 8th European Conference on Wireless Technology Proceedings; Paris, France, Oct. 2005; pp. 23-26.

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