Tuneable microwave filter

Details Tuneable microwave filter Tuneable microwave filter

1988-02-10

1989-02-21

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333204, 333246, H01P 1203

Patent

active

048068900

ABSTRACT:
A tuneable microwave filter comprises two branches of the same type each of which is connected to ground (22, 24) at each end and each of which includes a series-connected variable capacitance diode (13, 13A) controlled by a D.C. signal (V), said filter being disposed on the first face (9) of a plane substrate (8), with each branch comprising in series:

REFERENCES:
patent: 2915716 (1959-12-01), Hattersley
patent: 3530411 (1970-09-01), Sear
patent: 4023125 (1977-05-01), Wolfe
patent: 4078217 (1978-03-01), Beno
patent: 4211987 (1980-07-01), Pan
patent: 4468644 (1984-08-01), Teague et al.
patent: 4500854 (1985-02-01), Meyer
patent: 4619001 (1986-10-01), Kane
IEEE Transactions on Microwave Theory and Techniques, vol. MTT-33, No. 12, Dec. 1985, pp. 1416-1421, IEEE, N.Y., USA; C. Nguyen et al.: "On the analysis and design of spurline bandstop filters".

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