Microwave selective devices using localized modes in weakly asym

Details Microwave selective devices using localized modes in weakly asym Microwave selective devices using localized modes in weakly asym

1994-03-25

1996-01-02

Pascal, Robert J.

Wave transmission lines and networks

Resonators

Cavity resonator

333232, H01P 706

Patent

active

054812330

ABSTRACT:
A microwave cavity device having close frequency resonant modes wherein the major portion of the electromagnetic field energy of each mode is localized in a different region of the cavity is presented. The device can comprise one or several inputs, one or several outputs and tuning elements. These, together with the localization of the modes make the device suitable for different applications such as filters, multiplexors, switches. A class of cavities presenting localized modes are disclosed. These cavities are used in embodiments which have the advantage of being relatively simple, compact, with low insertion loss, high quality factor and simple tuning. Such cavities can be coupled in larger structures.

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patent: 5349316 (1994-09-01), Sterns
Rosenberg, Uwe "Multiplexing and Double Band Filtering With Common-Multimode Cavities" (IEEE Trans. MTT vol. 38, No. 12 pp. 1862-1871, 1990).
Sridhar, S. "Experimental Observations of Scarred Eigenfunctions of Chaotic Microwave Cavities" (Physical Review Letters, vol. 67, No. 7 pp. 785-788, 1991).

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