COMPUTER-AIDED TUNING OF MICROWAVE FILTERS.

Pattern search optimization techniques joined to synthesis of lossless networks containing constant reactances (LCX) are used to construct an effective algorithm for computer aided tuning of microwave filters. Intercavity coupling and resonator detuning of the short-circuited network under test are worked out from the measurement of the phase of the reflection coefficient. The technique proves to be successful in tuning a 6-pole filter having both elliptic attenuation peaks and group delay equalization and looks promising for properly aligning channel filters of manifold multiplexers.