Frequency offset technique for YIG devices

Details Frequency offset technique for YIG devices Frequency offset technique for YIG devices

1978-05-08

1979-09-25

Smith, Alfred E.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333207, 325448, H03H 900, H04B 126

Patent

active

041692535

ABSTRACT:
An improved electronic structure for achieving a frequency offset between two or more YIG devices tuned by a single electro-magnet. The structure does not require different sizes of YIG spheres, different magnet gap spacings, or modified coil windings on the electro-magnet, but relies entirely upon the anisotropy variations of the single crystal structure of the YIG spheres when they are mounted on respective tuning rods on a specific axis and rotated under a variable field for a fixed frequency input.

REFERENCES:
patent: 3274519 (1966-09-01), Nathanson
patent: 3290625 (1966-12-01), Bartram et al.
patent: 3368169 (1968-02-01), Carter et al.
patent: 3434057 (1969-03-01), Jackman et al.
patent: 3435346 (1969-03-01), Allen et al.
patent: 3838367 (1974-09-01), Bex
patent: 3921085 (1975-11-01), Keane
IEE Trans on MTT, May, 1965, pp. 306-315, Carter, P.S., "Side-Wall-Coupled, Strip Transmission-Line Magnetically Tunable Filters Employing Ferrimagnetic YIG Res".

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