Noncontacting waveguide backshort

Details Noncontacting waveguide backshort Noncontacting waveguide backshort

1990-12-21

1992-08-11

Gensler, Paul

Wave transmission lines and networks

Long line elements and components

Waveguide elements and components

333248, H01P 128

Patent

active

051382890

ABSTRACT:
A noncontacting waveguide backshort is provided for use with frequencies of interest between 1 and 1000 GHz including a relatively rugged metallic bar movably mounted within the waveguide in a MYLAR insulator. A series of regularly shaped and spaced circular or rectangular openings are made in the metallic bar to form sections of high impedance alternating with sections of the bar having low impedance. This creates a periodic impedance variation which serves to provided an adjustable short circuit in a waveguide for the frequencies of interest.

REFERENCES:
patent: 2543721 (1951-02-01), Collard et al.
patent: 2675524 (1954-04-01), Collard
patent: 4216450 (1980-08-01), Linke et al.
patent: 4800349 (1989-01-01), Gurcan et al.
McGrath et al, "Development of a 600-700 GHz SIS Receiver", Symposium proceedings, First Int'l Symposium on Space Terahertz Technology, pp. 409-433, Mar. 1990.
Brewer et al, "Dual-Harmonic Noncontacting Millimeter Waveguide Backshorts: Theory, Design, and Test" IEEE Transactions on Microwave Theory and Techniques, pp. 708-714, 1982.

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