Capacitively weighted surface acoustic wave device

Details Capacitively weighted surface acoustic wave device Capacitively weighted surface acoustic wave device

1977-10-19

1979-08-28

Smith, Alfred E.

Wave transmission lines and networks

Coupling networks

Delay lines including elastic surface wave propagation means

310313, 333154, 333194, 333196, H03H 904, H03H 926, H03H 930, H01L 4110

Patent

active

041662571

ABSTRACT:
A surface acoustic wave device wherein the interdigitated fingers are capacitively weighted with decreasing capacitance from the center of the transducer to the ends thereof has an improved response in the frequency passband in that the dip therein is substantially diminished, if not eliminated, when the interdigitated fingers of the transducer are of the split-connected form except adjacent at the ends of the transducer where the interdigitated fingers are of the split-isolated form, or all of the interdigitated fingers are of the split-isolated form. The increased surface acoustic wave reflection occurring at the end fingers where the weighting capacitors are small is overcome by the decreased surface acoustic wave reflection resulting from the increased impedance of the split-isolated fingers.

REFERENCES:
patent: 3748603 (1973-07-01), Wojcik
patent: 3894251 (1975-07-01), Shibayama et al.
patent: 3904996 (1975-09-01), Rosenfeld
patent: 4035675 (1977-07-01), Malocha et al.

Affiliated with

Also associated with

Rating

Capacitively weighted surface acoustic wave device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Capacitively weighted surface acoustic wave device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Capacitively weighted surface acoustic wave device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-769404