Active waveguide coupler for surface acoustic waves

Details Active waveguide coupler for surface acoustic waves Active waveguide coupler for surface acoustic waves

1977-09-12

1983-06-07

Gensler, Paul L.

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333113, 350 9613, H01P 504, H01P 518

Patent

active

043873537

ABSTRACT:
Coupling devices for SAW's, which permit switching of SAW power between cnels. Channel waveguides are laid down on or in the surface of a substrate. The waveguides have a coupling region in which they are close to each other. The input waveguide is formed from a material whose acoustic wave velocity characteristic can be changed by an external means. Various means for altering the velocity of the SAW, such as electric or optical fields, are employed by applying them to the coupling region of the input waveguide.

REFERENCES:
patent: 3406358 (1968-10-01), Seidel et al.
patent: 3560891 (1971-02-01), MacLeay et al.
patent: 3585531 (1971-06-01), Degenford et al.
patent: 3589794 (1971-06-01), Marcatili
patent: 3626334 (1971-12-01), Keyes
patent: 3753157 (1973-08-01), Ash et al.
patent: 3893047 (1975-07-01), Lardat
patent: 3976358 (1976-08-01), Thompson
patent: 4012113 (1977-03-01), Kogelnik et al.
patent: 4078186 (1978-03-01), Folen et al.

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