High frequency amplifier circuit for tuned radio

High-frequency amplifiers are crucial to FM receivers. Some receivers use off-the-shelf product components, which are FM tuners, or
FM heads for short. Therefore, we will introduce the high-frequency circuit of FM together, including the input circuit, high-frequency amplification , local oscillation and mixing circuits.
    The figure shows the high-frequency amplification circuit of an FM radio . This amplifier uses a preamplifier for FM radio frequency signals. It uses an insulated gate field effect transistor MOS FET and has a dual-gate field effect transistor with small cross-interference modulation.