Tunable waveguide bandpass filter

Details Tunable waveguide bandpass filter Tunable waveguide bandpass filter

1986-06-20

1988-08-02

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333 33, 333212, 333251, 333235, H01P 1207, H01P 1208, H01P 116, H01P 700

Patent

active

047616253

ABSTRACT:
A waveguide bandpass filter includes a fenestrated conductive septum which may be printed on a dielectric circuit board. The center frequency is tuned by a dielectric plate parallel with the septum and contiguous with the fenestrations which is movable in a direction orthogonal to the septum.

REFERENCES:
patent: 2697209 (1954-12-01), Sichak et al.
patent: 3212034 (1965-10-01), Kaufman et al.
patent: 3621483 (1971-11-01), Craven
patent: 3758879 (1973-09-01), Beguin et al.
patent: 3940721 (1976-02-01), Kojima et al.
patent: 4135133 (1979-01-01), Mok
patent: 4320367 (1982-03-01), Boujet
Article entitled "Theory & Design of Low-Insertion Loss Fin-Line Filters" by Arndt et al., published at pp. 155-163 of IEEE Transactions on Microwave Theory and Techniques, Feb. 1982.
Article entitled "A New Class of Optimized Fin-Line & E-Plane Metal Insert Filters with Improved Characteristics" by Vahldieck et al., published at pp. 182-184 of the 1985 IEEE MTT-S Digest.
Article entitled "Design of Waveguide E-Plane Filters with All-Metal Inserts" by Shih, published at pp. 695-704 of IEEE Transactions on Microwave Theory and Techniques, Jul. 1984.
The characteristics of various obstacles in waveguides are described in Chapter 9, pp. 142-157 of "Microwave Transmission Design Data", by Moreno, republished 1958 by Dover.

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