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:
Apr. 03, 2018
Filed:
Dec. 18, 2015
Thomas J. Johnson, Bedford, NH (US);
Jack Chuang, Avon, OH (US);
Dimitrios Peroulis, West Lafayette, IN (US);
Eric Naglich, Alexandria, VA (US);
Souleymane Gnanou, Salem, NH (US);
Curtis M. Grens, Manchester, NH (US);
Mark Hickle, Lafayette, IN (US);
Michael D. Sinanis, West Lafayette, IN (US);
Mark E. Stuenkel, Goffstown, NH (US);
Paul D. Zemany, Amherst, NH (US);
Thomas J. Johnson, Bedford, NH (US);
Jack Chuang, Avon, OH (US);
Dimitrios Peroulis, West Lafayette, IN (US);
Eric Naglich, Alexandria, VA (US);
Souleymane Gnanou, Salem, NH (US);
Curtis M. Grens, Manchester, NH (US);
Mark Hickle, Lafayette, IN (US);
Michael D. Sinanis, West Lafayette, IN (US);
Mark E. Stuenkel, Goffstown, NH (US);
Paul D. Zemany, Amherst, NH (US);
BAE Systems Information and Electronic Systems Integration Inc., Nashua, NH (US);
Purdue Research Foundation, West Lafayette, IN (US);
Abstract
An evanescent-mode cavity filter with an improved MEMS tuner design is disclosed. The MEMS tuner design allows for the independent control of individual poles in a multi-pole filter, which increases the adaptability of the filter in a crowded RF environment. The filter is further designed to minimize tuning voltages and hysteresis effects. A closed loop control system provides highly responsive tuning of the filter. The closed loop control allows for accurate and stable tuning that compensates for temperature and vibrational effects, while the tuner design enables fast tuning and significantly increases the resolution of the feedback measurement by eliminating charge buildup in the tuner substrate.