Quasioptical band rejection filter

Details Quasioptical band rejection filter Quasioptical band rejection filter

1978-06-01

1980-01-22

Smith, Alfred E.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333211, H01P 120

Patent

active

041852575

ABSTRACT:
One of ports of a 3dB hybrid for dividing and combining electromagnetic waves is used as an input port, and first and second resonators are electromagnetically coupled respectively with two ports to which the electromagnetic waves incident from the input port are outputted after being divided. The first and second resonators respectively comprise pluralities of opposed coupling disks sequentially arranged in the direction of travel of the electromagnetic waves and first and second reflectors disposed opposite the coupling disks farthest from the hybrid. The numbers of coupling disks of the first and second resonators are selected to differ by one. The remaining port of the hybrid is used as an output port.

REFERENCES:
patent: 4034315 (1977-07-01), Unrau
U. Unrau et al., Quasioptical Band-Splitting Filter with Extended Bandwidth, Telecommunications Conference, London, England, 9/1970.
Suzuki, Nobuo, A New Band-Splitting Filter for Guided Millimeter-Wave Transmission Systems, IEEE MTT Trans, No. 5, 1976, (May).
Cohen et al., Dielectric Slab-Interference Filters Having Wide Stop Bands, Proceedings IEEE, Jul. 1966.

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