1 October 1991 A quasi-optical power combining array with externally injection-locked elements
Author Affiliations +
Proceedings Volume 1576, 16th International Conference on Infrared and Millimeter Waves; 157640 (1991) https://doi.org/10.1117/12.2297857
Event: 16th International Conference on Infrared and Millimeter Waves, 1991, Lausanne, Switzerland
Abstract
Recently, quasi-optical power combining arrays using FETs have been demonstrated [1,2], where the active elements are distributed on a plane between partially reflecting dielectric slabs. Spatial injection locking is achieved by illuminating the array with a plane wave; locking bandwidths are typically low.

In this paper, we demonstrate a new type of power combining array using two-port FET oscillators as the active elements [3]. The oscillators are arranged in a square planar array, with the output of each connected to a patch radiator. The key difference between this approach and the work cited above is that the oscillators are injection locked to a single external source by means of a Wilkinson-type 16 way power divider, rather than by parasitic coupling between the oscillating elements.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Joel Birkeland, "A quasi-optical power combining array with externally injection-locked elements", Proc. SPIE 1576, 16th International Conference on Infrared and Millimeter Waves, 157640 (1 October 1991); doi: 10.1117/12.2297857; https://doi.org/10.1117/12.2297857
PROCEEDINGS
2 PAGES


SHARE
RELATED CONTENT

24 GHz FET oscillator with slot antenna for quasi optical...
Proceedings of SPIE (October 01 1991)
Image-line voltage controllable active antennas
Proceedings of SPIE (October 01 1991)
Development of high-power copper vapor laser system
Proceedings of SPIE (January 11 2000)
RF testbed for thermoacoustic tomography
Proceedings of SPIE (February 12 2009)
Power Combining System Using Two Push Pull Power Amplifiers
Proceedings of SPIE (November 18 1988)

Back to Top