Transverse-electric mode filters and methods

Details Transverse-electric mode filters and methods Transverse-electric mode filters and methods

1998-04-28

2000-09-12

Ham, Seungsook

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

333208, 333212, H04B 7185, H01P 3123

Patent

active

061189782

ABSTRACT:
A transverse-electric waveguide filter is provided for transmitting a fundamental transverse-electric mode in a first frequency band while attenuating an associated higher-order transverse-electric mode in a second frequency band. The filter includes transverse corrugations between input and output waveguide ports to attenuate the higher-order transverse-electric mode. The input and output waveguide ports have a characteristic impedance and the filter also incudes a ridge system that is coupled between the first and second waveguide ports and is configured to provide a signal-path impedance that substantially matches the characteristic impedance to thereby support transmission of the fundamental transverse-electric mode from the input port to the output port.

REFERENCES:
patent: 3271706 (1966-09-01), Rooney
patent: 3949327 (1976-04-01), Chapell
patent: 4675631 (1987-06-01), Waggett
patent: 5254963 (1993-10-01), Bonetti et al.
patent: 5256990 (1993-10-01), Young
Matthaei, George L., et al., Microwave Filters, Impedance Matching Networks and Coupling Structures, Artech House, 1993, Norwood, MA, sections 3.1.3 and 7.0.4.

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