Question

The power amplifier of a portable cellular handset operates at 3.2 volts and has an
output power of 600 mW. Find the amplifier output impedance.
The amplifier is connected to the handset antenna which has an impedance of 25 +
j10 Ω at one unspecified operating frequency. Find the inductive reactance and
capacitive reactance needed to match the transmitter output to the antenna under this
condition. (Hint: you can use the amplifier output impedance as Z0. Use the method
of Pozar example 2.5 or any other means to find the matching network).
If the handset is operating at 1800 MHz, find the capacitance and inductance of the
matching network.

Answer 1