of the first transistor 102 one end of the tank circuit 120 is coupled to a node between the first inductor 104 and the emitter of the second transistor 106 the opposing end of the tank circuit 120 is coupled to a node 129 which may be a ground the tank circuit 120 generally includes an inductor i e a second inductor 122 and a capacitor i e a second capacitor 124 coupled in parallel other forms of the tank circuit 120 will be discussed later in operation a bias voltage is applied to the transconductance cell 100 at the bases and the collectors of the first and second transistors 102 and 106 to bias the first and second transistors 102 and 106 for operation in response to this bias voltage dc currents flow through the first and second transistors 102 and 106 and exit through the first inductor 122 since an inductor behaves like a short circuit to a dc current the bias voltage does not experience any voltage drop across the first inductor 122 this enables the transconductance cell 100 to be operated at a relatively low voltage and also increases the headroom for the circuit once the bias voltage has been applied at the bases and collectors of the first and second transistors 102 and 106 the voltage input 101 is applied to the base of the first transistor 102 to output a signal at the emitter of the first transistor 102 the signal flows through the first inductor 104 and is received at the emitter of the second transistor 106.