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:
May. 10, 2011
Filed:
Nov. 14, 2006
Yasuhide Iwamoto, Kawasaki, JP;
Jun Tsutsumi, Kawasaki, JP;
Masafumi Iwaki, Kawasaki, JP;
Masanori Ueda, Yokohama, JP;
Yasuhide Iwamoto, Kawasaki, JP;
Jun Tsutsumi, Kawasaki, JP;
Masafumi Iwaki, Kawasaki, JP;
Masanori Ueda, Yokohama, JP;
Taiyo Yuden Co., Ltd., Tokyo, JP;
Abstract
A duplexer includes a transmit filter of a ladder type filter, connected between a common terminal and a transmitting terminal, and a receive filter of the ladder type filter, connected between the common terminal and a receiving terminal. One or more parallel resonators in the transmit filter are grounded through a transmitting inductance, and a portion of multiple parallel resonators are grounded through a first receiving inductance and a remaining portion of the multiple parallel resonators are grounded through a second receiving inductance.