Wave transmission lines and networks – Automatically controlled systems – With control of equalizer and/or delay network
Patent
1974-11-08
1976-03-02
Borchelt, Archie R.
Wave transmission lines and networks
Automatically controlled systems
With control of equalizer and/or delay network
310 98, 333 30R, H03H 926, H03H 930, H03H 932, H01L 4108
Patent
active
039421406
ABSTRACT:
The input transducers of a multichannel surface acoustic wave device are electrically connected in a series or series-parallel circuit arrangement and are connected to a single channel electromagnetic wave transmission line through an inductor. The inductance value of the inductor is chosen such that minimum transducer insertion loss is achieved at the center frequency of the midband channel. The circuit arrangement is selected which achieves optimum coupling to the midband channel subject to the constraint that the insertion losses of all the remaining channels, measured at their respective center frequencies, lie at or near the above optimum value within an acceptable prespecified margin.
REFERENCES:
patent: 3446975 (1969-05-01), Adler et al.
patent: 3522557 (1970-08-01), Duncan et al.
patent: 3750027 (1973-07-01), Hartmann
patent: 3790828 (1974-02-01), Chao
patent: 3855556 (1974-12-01), Hartmann
patent: 3858118 (1974-12-01), Daniel
Budreau Alan J.
Carr Paul H.
Laker Kenneth R.
Borchelt Archie R.
Matthews, Jr. Willard R.
Nussbaum Marvin
Rusz Joseph E.
The United States of America as represented by the Secretary of
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