Patent ID: 6240131
Filing Date: 2001-05-29
Classification: H03H,H04B

Abstract:
A filter having a first transfer function, said filter comprising:a first signal input for receiving a first input signal;a first signal output operatively coupled to said first signal input for providing a first output signal, wherein a ratio of said first output signal to said first input signal is equal to said first transfer function, wherein said first transfer function has a single pole;a set of control inputs, wherein each control input in said set of control inputs is adapted for providing a digital signal;a first set of selectable transconductive loads, wherein each selectable transconductive load in said first set of selectable transconductive loads has a transconductance and is operatively coupled to said first signal output and a control input in said set of control inputs;a second signal input for receiving a second input signal;a second signal output operatively coupled to said second signal input for providing a second output signal, wherein a ratio of said second output signal to said second input signal is equal to a second transfer function; anda second set of selectable transconductive loads, wherein each selectable transconductive load in said second set of selectable transconductive loads has a transconductance and is operatively coupled to said second signal output and a control input in said set of control inputs.