Paper
1 December 1990 Phase and phase centres in quasi-optical systems
R. J. Wylde
Author Affiliations +
Proceedings Volume 1514, 15th International Conference on Infrared and Millimeter Waves; 15145P (1990) https://doi.org/10.1117/12.2301615
Event: 15th International Conference on Infrared and Millimeter Waves, 1990, Orlando, FL, United States
Abstract
The idea of a "phase-centre" for a feed antenna is frequently used when designing a system to be fed by the antenna. The phase-centre is loosely thought of as the point from which the beam emanates but that will be uniquely defined only for a beam which has a truly spherical phase-front and that is rarely the situation with a feed antenna, even in the far-field.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. J. Wylde "Phase and phase centres in quasi-optical systems", Proc. SPIE 1514, 15th International Conference on Infrared and Millimeter Waves, 15145P (1 December 1990); https://doi.org/10.1117/12.2301615
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KEYWORDS
Antennas

Beam analyzers

Mirrors

Off axis mirrors

Spherical lenses

Superposition

Near field

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