Tunable Quasi-stripline filter and method therefor

Details Tunable Quasi-stripline filter and method therefor Tunable Quasi-stripline filter and method therefor

1996-11-25

1998-08-25

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333205, 29600, H01P 1203

Patent

active

057986770

ABSTRACT:
Quasi-stripline filters (20) are tuned during manufacture to achieve consistent frequency response. A filter structure (20) which accommodates the method (60) is provided. The microstrip filters (30) are fabricated by forming conductive filter patterns (22) upon non-conductive (dielectric) substrates (24), and then bonding those substrates (24) to conductive (metallic) substrates (28). These filters (30) are then entunneled with conductive housings (34) electrically and physically joined to the conductive plates (28). Housings (34) of varying cross-sectional areas (40) are chosen to produce the desired frequency response, thus converting the microstrip filters (30) into quasi-stripline filters (20) with a specific frequency response.

REFERENCES:
patent: 4020428 (1977-04-01), Friend et al.
patent: 4281302 (1981-07-01), Stegens
patent: 4706050 (1987-11-01), Andrews
patent: 4965537 (1990-10-01), Kommrusch
patent: 5319239 (1994-06-01), Shiau et al.
"K-Band T/R-Converter Modules for the Iridium.RTM. Satellite Program*", IEEE MTT -S Digest, May 1995-2, David W. Corman, Bill T. Agar, Kenneth V. Buer, Dean L. Cook, Motorola Satellite Communications Division, pp. 1653-1656.

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