Phase shifters
Phase-shifting circuit
Power amplifier
Power amplifier and radio communication apparatus using the...
Power amplifier circuit, control method for power amplifier...
Power amplifier device
Power amplifier for a transmitter
Power amplifier for a transmitter
Power amplifier of a transmitter
Power amplifier system
Power amplifier transmission line transformer
Power amplifier with stabilising network
Power amplifying device comprising a stabilizing circuit
Pre-emphasis network with variable time delay
Preamplifier system