logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 4072915 B1

PDFFull Text
Date of Patent:
Feb. 07, 1978

Filed:

Sep. 10, 1976

Acoustic surface wave devices

Applicant:
Inventor:

Richard F Mitchell, Merstham, EN;

Assignee:

U.S. Philips Corporation, New York, NY (US);

Attorneys:

Trifari; Frank R.

Franzblau; Bernard

Primary Examiner:

Alfred E Smith

Assistant Examiner:

Marvin Nussbaum

Int. Cl.
CPC ...
H03H / ; H03H / ; H03H / ; H01L / ;
U.S. Cl.
CPC ...
333 72 ; 310313 ; 310366 ;
Abstract

An electrode structure within the cavity of an acoustic surface wave resonator, e.g. an interdigital transducer or a multistrip coupler, has two sections separated by an odd integral multiple of a quarter wavelength of the standing wave in the cavity and located with respect to the center of the cavity so that all the electrodes are midway between a node and an adjacent antinode of the standing wave. Distortion of the resonator response due to reflection by the electrodes of the transducer or coupler is suppressed by this arrangement.

Find Patent Forward Citations

Mitchell, Richard. (1978). Acoustic surface wave devices (U.S. Patent No. 4072915). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4072915

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…