Microwave switch

Wave transmission lines and networks – Long line elements and components – Waveguide elements and components

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Details

333103, 333 21R, 333251, H01P 110

Patent

active

045757011

ABSTRACT:
An improved microwave switch incorporating a fin line structure is described. Microwave switches incorporating fin line structures enable microwave energy to be passed to a load or reflected back to the source, by controlling the conductance state of diodes mounted on the fin line structure. The present invention enables the electrical performance of such switches to be greatly improved. The height of a waveguide channel in the vicinity of the fin line structure is very greatly reduced thereby forcing a waveguide mode of propagation into a slot line so that the fin line structure receives substantially all of the energy supplied to the switch. Higher order modes which are generated at the fin line structure are attenuated by lossy material positioned in choke cavities mounted on either side of the fin line structure.

REFERENCES:
patent: 2877434 (1959-03-01), Farr et al.
patent: 3187277 (1965-06-01), Wantuch
patent: 3346825 (1967-10-01), Scott et al.
patent: 3701055 (1972-10-01), Stiles
patent: 3710286 (1973-01-01), Aizu et al.
patent: 3732508 (1973-05-01), Ito et al.
"Integrated Fin-Line Millimeter Components" by Paul J. Meier, from IEEE Transactions on Microwave Theory and Techniques, vol. MTT-22, No. 12, Dec. 1974, pp. 1209-1216.

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