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. 27, 2001
Filed:
Jul. 14, 1999
Kouth Chen, Hsinchu, TW;
Ching-Kuang C. Tzuang, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu Hsien, TW;
Abstract
A comb-line filter is disclosed which includes: (a) a top metal plate and a bottom metal plate; (b) a pair of resonators sandwiched between the top and bottom metal plates and in a parallel and spaced relationship with respect to the top and bottom metal plates; (c) a pair of resonator extensions extending from the pair of resonators, respectively, and (d) a pair of capacitor plates provided above and below the pair of resonators, respectively. The pair of capacitor plates and the pair of resonators extensions are grounded so as to provide a double-parallel capacitor groups. The comb-line filter can be constructed such that the ratio of the separation between the two resonators (d,) and the separation between the resonator and the capacitor plate (d,) is above about 3. By doing so, the coupling capacitance can be reduced to 0.1 pF or lower. In a more preferred embodiment, the ratio of d,/d,is maintained to below 10, and the coupling capacitance will be essentially zero (less than 0.01 pF).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile