New algorithms for the automated microwave tuner test system

Optimization of amplifier performance characteristics requires the termination of the active device in the proper source and load impedances.With the exception of small-signal amplifiers designed for gain, the correct terminating impedances are found by tuning. The programmable microwave tuner, along with its associated software, represents a very rapid and efficient means of obtaining the proper impedance values. This paper describes new algorithms that improve the search procedures and allow the load terminating the microwave tuner to be any arbitrary impedance of known value.