Multiplex data communications using acoustical surface wave filt

Details Multiplex data communications using acoustical surface wave filt Multiplex data communications using acoustical surface wave filt

1975-01-09

1976-10-12

Claffy, Kathleen H.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333 72, H03H 710, H04J 100

Patent

active

039859681

ABSTRACT:
An acoustical wave filter is formed by depositing a pattern of interdigitated conductors which form a coding arrangement on a piezeoelectric crystal. Multiplex communication through the crystal is achieved by depositing input filters of differing configuration on the crystals, which separate channels by autocorrelation of a pulse code. A single output filter is provided to respond to the waves set up in the crystal by the input filters to transmit these waves to a single common conductor. Demultiplex is similarly done on a second crystal.

REFERENCES:
patent: 3358082 (1967-12-01), Helm
patent: 3358083 (1967-12-01), Helm
patent: 3766496 (1973-10-01), Whitehouse
patent: 3836876 (1974-09-01), Marshall
patent: 3858118 (1974-12-01), Daniel

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