Amplifier with gain circuit coupeld to primary coil of transformer

摘要

An amplifier includes a transformer and a first stage gain circuit. The transformer includes a primary coil and a secondary coil. The primary coil is utilized for receiving an input signal. The first stage gain circuit has a first input port, which is coupled to the primary coil. The first stage gain circuit is utilized for gaining the input signal so as to generate a first output.

主权项

1. An amplifier, comprising:
a transformer, including a primary coil and a secondary coil, wherein the primary coil is utilized for receiving an input signal; and a first stage gain circuit, including a first input port, wherein the first input port is coupled to the primary coil, and the first stage gain circuit is utilized for applying a gain to the input signal to generate a first output; wherein the first stage gain circuit comprises a first transistor and a second transistor, and each of the first transistor and the second transistor includes a control electrode, a first electrode and a second electrode; and the first input port comprises:
a first input terminal, coupled to a first terminal of the primary coil; anda second input terminal, coupled to a second terminal of the primary coil;wherein the first electrode of the first transistor and the first electrode of the second transistor serve as the first input terminal and the second input terminal, respectively.