USA As Represented by Secretary of the Navy

David J White

Donald R Bowling

Robert E Hunt

Robert J Dinger

Darry M Kinman

Marko Afendykiw

Carl N Helmick, Jr

An antenna array for combining in space microwave energy from a number of cillators, such as IMPATT diodes, which are controllable by injection locking. The array has elements individually driven by the oscillators, but an injection locking signal is provided in the usual manner only to the oscillator of a central element. The other oscillator are injection locked through mutual coupling between the central element and the other elements so that coherent radiation is output by the array. The radiation may be steered by phase shifters between the elements and their oscillators.

Space power combiner

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.

N-way summing network characterization system

A method and device for adjusting the center frequency after fabrication of surface acoustic wave (SAW) devices by the deposition of a nonconducting coating which alters the SAW propagation velocity of the device.

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Ridgecrest, CA, United States of America

David J White