Abstract: A system for quasi real-time computer aided characterization of symmetrical -way microwave power combining structures which utilizes a network analyzer to measure scattering parameters of said combining structure at various RF frequencies and at desired transmission routes through said combining structure. The routes are selected by a coaxial switching network which is controlled by said network analyzer which also computes and outputs the maximum combining efficiency, .eta., and the input impedance of the ith port under conditions of maximum combining efficiency, Zic.

Abstract: A tuned cavity with a number of coaxial circuit microwave sources spaced about the cavity and disposed oppositely of the cavity from flat loads which suppress oscillations of the sources at undesired frequencies, the loads being adjacent to the cavity to provide wide bandwidth and a compact structure and yet spaced from the cavity a distance substantially less than the wavelengths of the operating frequencies so as to not interfere significantly with the electromagnetic fields in the cavity.