A transconductor circuit includes a first input device M1 and a second
input device M2 each having a control terminal coupled to a radio frequency
input signal, and a bias setting device MB having a control terminal
coupled to the radio frequency input signal and an output coupled to the control
terminal of each of said M1 and M2. MB is partitioned
into two equal sized bias setting devices MB1 and MB2. In
the preferred embodiment MB1 and MB2 are coupled to the control
terminals of M1 and M2 for establishing a bias voltage at
the control terminals of M1 and M2. The circuit is shown
to substantially cancel second-order intermodulation distortion and to enhance
a second order intercept point.