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:
Nov. 06, 2001
Filed:
Mar. 09, 2000
Ron Barnett, Santa Rosa, CA (US);
Yee Leng Low, Berkeley Heights, NJ (US);
Zhengxiang Ma, Summit, NJ (US);
King L Tai, Berkeley Heights, NJ (US);
Hui Wu, Union, NJ (US);
Avaya Technology Corp., Basking Ridge, NJ (US);
Abstract
A bandpass planar filter (,) comprises a signal input and a signal output (,), and one or more resonator elements (,) coupled serially end-to-end between the input and the output across gaps (,) that separate the elements from the input, the output, and from each other. The resonator elements form a serpentine shape such that at least two portions of the serpentine shape are positioned side-by-side parallel to each other separated by a spacing (,). The side-by-side portions effect additional coupling between the resonator elements that forms a notch (transmission zero) (,) in the passband (,) of the filter. The input, output, and resonator elements are etched into one surface (,) of a PC board (,); the other surface (,) of the PC board forms a ground plane of the filter, and the substrate (,) of the PC board forms a dielectric of the filter.