Volume magnetostatic wave device

Wave transmission lines and networks – Coupling networks – Delay lines including elastic bulk wave propagation means

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Details

331107A, 333143, 333149, H03H 9125, H03H 938, H03B 500

Patent

active

043921159

ABSTRACT:
The volume magnetostatic wave device comprises a unidirectional-radiation transducer composed of equidistant microstrips connected to a polyphase transformer and coupled to a ferrimagnetic wafer which is subjected to a polarizing magnetic field.

REFERENCES:
patent: 3401360 (1968-09-01), Schulz Du Bois
patent: 3686518 (1972-08-01), Hartmann et al.
patent: 3866154 (1975-02-01), Moore
patent: 4028639 (1977-06-01), Hagon et al.
patent: 4087714 (1978-05-01), La Rosa et al.
patent: 4199737 (1980-04-01), Patterson et al.
Adam et al.-"Microwave Magnetostatic Delay Devices Based on Epitaxial Yttrium Iron Garnet", Proc. of the IEEE, vol. 64, No. 5, May 1976; pp. 794-800.
Shimizu et al.-"Unidirectional Surface-Acoustic Wave Transducer by Meandering and Interdigital Electrodes", The Transactions of the Institute of Electronics and Communication Engineers of Japan, vol. 61, No. 7, Jul. 1978; pp. 557-558.
Adam et al.-"Interdigital Structures for Magnetostatic Wave Transversal Filters", 1978 IEEE International Symposium on Circuits and Systems Proceedings, Roosevelt Hotel, New York, May 17-19, 1978; pp. 569-573.
Miley-"Looking for a 3 DB to 8 DB Microstrip Coupler?", Microwaves vol. 13, No. 3, Mar. 1974; pp. 58-62.

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