The military requirement to remotely detect and identify objects under realistic battlefield conditions has motivated substantial interest in the region of the electro-magnetic spectrum between microwaves and infrared frequencies with primary focus on that region bounded by atmospheric "windows" between 100 and 1000 GHz.1 This region offers an attractive compromise between the high resolution capabilities of infrared radiation and the low loss propagation characteristics of microwaves. In terms of technology, this region of the spectrum represents a transitional zone between microwave technology and optical technology. This has resulted in a dichotomy of techniques applied to construct systems. On one hand we see devices and systems which utilize modal techniques; i.e., conventional hollow metallic waveguides, and on the other hand, we see devices and systems which utilize quasi-optical, ray techniques; i.e., lenses, beam splitters.

Date Published: 2 August 1982
PDF: 6 pages
Proc. SPIE 0317, Integrated Optics and Millimeter and Microwave Integrated Circuits, (2 August 1982); doi: 10.1117/12.933078

Published in SPIE Proceedings Vol. 0317:
Integrated Optics and Millimeter and Microwave Integrated Circuits
Bob D. Guenther; William Pittman, Editor(s)