Impedance Measurement by Means of a Broadband Circular-Polarization Coupler

Autor:	Seymour B. Cohn
Rok vydání:	1954
Předmět:	Materials science business.industry Focused Impedance Measurement Bandwidth (signal processing) Right angle Physics::Optics Polarization (waves) Waveguide (optics) Wavelength Optics Broadband Electrical and Electronic Engineering business Circular polarization
Zdroj:	Proceedings of the IRE. 42:1554-1558
ISSN:	0096-8390
DOI:	10.1109/jrproc.1954.274762
Popis:	This paper describes a waveguide component particularly useful as a broadband impedance-measurement instrument. The component consists of a length of circular waveguide at right angles to the broad wall of a rectangular waveguide, and coupled to it by three apertures. A probe rotated one turn in the circular waveguide will sample a field variation exactly equivalent to that in one guide wavelength of the rectangular waveguide. This condition may be maintained with high accuracy over approximately a 20-per cent bandwidth. The principle of operation of the device is discussed in the paper and design equations given. Several possible applications are described.
Databáze:	OpenAIRE
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