Patent ID: 7839233

Claim:
A π-type voltage-controlled variable attenuator, comprising: a series arm configured to receive an input signal and output an attenuated signal, the series arm comprising: a first variably resistive component comprising a first field effect transistor (FET); and a second variably resistive component coupled in series with the first variably resistive component, the second variably resistive component comprising a second FET; a first shunt arm comprising a third variably resistive component comprising a third FET, the first shunt arm coupled to the first variably resistive component; and a second shunt arm comprising a fourth variably resistive component comprising a fourth FET, the second shunt atm coupled to the second variably resistive component; wherein the attenuator lacks a capacitor configured to isolate the first variably resistive component from the first shunt arm; wherein the attenuator lacks a capacitor configured to isolate the second variably resistive component from the second shunt arm.