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:
Jul. 27, 2004
Filed:
Sep. 16, 2002
Applicant:
Inventor:
Sung-ho Wang, Seoul, KR;
Assignee:
Berkana Wireless, Inc., Campbell, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 1/116 ;
U.S. Cl.
CPC ...
H03H 1/116 ;
Abstract
A quadrature signal generator includes a polyphase filter where four resistive elements and four variable capacitive elements are connected alternately in series to form a loop; and a phase corrector that variably controls the capacitance of the variable capacitive elements.