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.:
Date of Patent:
Mar. 17, 2020
Filed:
Jun. 19, 2017
Applicant:
Rfhic Corporation, Anyang, KR;
Inventor:
Won Sang Lee, Chapel Hill, NC (US);
Assignee:
RFHIC Corporation, Anyang, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/56 (2006.01); H03H 3/02 (2006.01); H03H 9/02 (2006.01);
U.S. Cl.
CPC ...
H03H 9/56 (2013.01); H03H 3/02 (2013.01); H03H 9/02047 (2013.01); H03H 9/02102 (2013.01); H03H 9/564 (2013.01);
Abstract
A bulk acoustic wave (BAW) filter for passing through electric signals in a preset frequency range is provided. The BAW filter includes: a diamond substrate; a passivation layer formed on the diamond substrate; a first metal layer formed on the passivation layer; a piezoelectric layer formed on the first metal layer; a second metal layer formed on a piezoelectric layer and a metal pad formed on the first metal layer. The metal pad, first metal layer, piezoelectric layer and second metal layer form an electrical path that allows an electrical signal within a preset frequency range to pass therethrough.