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:
Feb. 09, 2010
Filed:
Jun. 05, 2008
Applicants:
Zuo-min Tsai, Taipei, TW;
Shih-fong Chao, Taipei, TW;
Huei Wang, Taipei, TW;
Inventors:
Assignee:
National Taiwan University, Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 1/15 (2006.01); H01P 5/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A single-pole-double-throw switch is provided, which is configured to be integrated with a bandpass filtering function and includes four quarter-wavelength transmission lines connected in series, five resonators connected in parallel to each other, and four transistors connected in parallel to four of the five resonators. When two of the four transistors are turned on and the others are turned off, the single-pole-double-throw switch is equivalent to a third-order quarter-wavelength short-circuited stub bandpass filter.