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. 01, 1997
Filed:
Jun. 29, 1995
Michael Dydyk, Scottsdale, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A filter (500) including a first resonator (505) coupled in shunt with a first port (507), a first bridging network (510) coupled between the first port (507) and a first node (509), a second resonator (515) coupled in shunt with the first node (509) and a second port (547) coupled to the first node (509). The first (505) and second (515) resonators each include acoustic resonators (15) and the first bridging network (510) has an electrical length .THETA. at a frequency .omega. in a system having a characteristic admittance Y in accordance with .omega.C.sub.o =Ycot.THETA. where C.sub.o is a shunt capacitance including the clamping capacitance of the first resonator (505) and .omega. is a center frequency of the filter (500).