Surface wave electro-mechanical device

Details Surface wave electro-mechanical device Surface wave electro-mechanical device

1975-11-07

1977-03-22

Smith, Alfred E.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

310 82, 333 30R, H03H 904, HO3H 926, H03H 932, H03H 930

Patent

active

040139832

ABSTRACT:
The invention relates to elastic surface wave resonators and filters. The device in accordance with the invention is based mainly on the selective reflection of the elastic surface waves. It comprises a crystalline substrate in the upper face of which at least one grating of reflective elements is formed by ion implantation for locally altering the regular arrangement of the atoms in the lattice structure of the substrate.

REFERENCES:
patent: 3781717 (1973-12-01), Kuenemund
patent: 3882430 (1975-05-01), Maerfeld
patent: 3883831 (1975-05-01), Williamson et al.
patent: 3886504 (1975-05-01), Hartmann et al.
Barrekette et al. -- "Multichannel Guide for ASW Memories" in IBM Technical Disclosure Bulletin vol. 14, No. 4 Sept. 1971; pp. 1295-1298.

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