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:
Aug. 21, 2018
Filed:
Aug. 17, 2015
Fengxi Huang, Waterloo, CA;
Siamak Fouladi Azarnaminy, Waterloo, CA;
Mitra Nasresfahani, Waterloo, CA;
Raafat R. Mansour, Waterloo, CA;
Fengxi Huang, Waterloo, CA;
Siamak Fouladi Azarnaminy, Waterloo, CA;
Mitra Nasresfahani, Waterloo, CA;
Raafat R. Mansour, Waterloo, CA;
Other;
Abstract
A tunable bandpass filter to provide a constant absolute bandwidth across the entire tuning range. The filter comprises of a plurality of tunable resonators, each having an enclosure. A resonating structure extending upwardly from the bottom surface of the enclosure and a tuning screw with a flat head extending downwardly from the top surface of the enclosure, wherein the resonating structure and the flat head of the screw face each other and form a gap. The height of the tuning screw can be adjusted to change the gap between the resonating structure and the flat head. The adjustable gap of the present filter allows for tunable filter operation.