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. 05, 2008
Filed:
Jun. 15, 2004
Bill Blair, Freehold, NJ (US);
Jeff Blair, Freehold, NJ (US);
Bill Engst, Marlboro, NJ (US);
Robert Laemmle, Freehold, NJ (US);
Greg Lamont, Jackson, NJ (US);
Weili Wang, Rocky Hill, CT (US);
William Wilber, Southbury, CT (US);
Bill Blair, Freehold, NJ (US);
Jeff Blair, Freehold, NJ (US);
Bill Engst, Marlboro, NJ (US);
Robert Laemmle, Freehold, NJ (US);
Greg Lamont, Jackson, NJ (US);
Weili Wang, Rocky Hill, CT (US);
William Wilber, Southbury, CT (US);
Radio Frequency Systems, Inc., Meriden, CT (US);
Abstract
A microwave filter and method for remotely tuning a microwave filter from one sub-band to another sub-band using metallic rings to adjust the capacitance or inductance of the resonator. In adjusting the capacitance, a plurality of metallic rings are disposed in the upper section or end of the resonator. Each ring has an RF switch that connects or disconnects each ring to ground, thereby varying the capacitance of the resonator. In adjusting the inductance, a plurality of metallic rings are disposed perpendicular to the magnetic field of the resonator. Each ring has an RF switch disposed within the electrical path of the ring that opens or closes the electrical path of each ring. By opening and closing each ring, the magnetic field of the resonator is altered, thereby varying the inductance of the resonator.