Abstract: An apparatus including: a transmitter output impedance matching circuit including an inductive element; a low noise amplifier (LNA) including a first field effect transistor (PET); a receiver input impedance matching circuit, including: a transformer including a first winding and a second winding; and a capacitor coupled in series with the first winding between a first end of the inductive element and a gate of the first FET, wherein the second winding is coupled to a second end of the inductive element; and a radio frequency (RF) port coupled between the first end of the inductive element and the capacitor.

Abstract: An apparatus includes a low-noise amplifier having an input and an output, a first switch coupled between the input of the low-noise amplifier and the output of the low-noise amplifier, and a transformer including a first inductor and a second inductor, wherein the first inductor is coupled to the output of the low-noise amplifier. The apparatus also includes a power amplifier having an input and an output, and a switching circuit coupled between the output of the power amplifier and the second inductor.