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:
Mar. 03, 2009
Filed:
Dec. 19, 2005
Nobuhiko Shibagaki, Kokubunji, JP;
Mitsutaka Hikita, Hachioji, JP;
Kazuyuki Sakiyama, Chigasaki, JP;
Osamu Hikino, Yokohama, JP;
Nobuhiko Shibagaki, Kokubunji, JP;
Mitsutaka Hikita, Hachioji, JP;
Kazuyuki Sakiyama, Chigasaki, JP;
Osamu Hikino, Yokohama, JP;
Hitachi Media Electronics Co., Ltd., Iwate-Ken, JP;
Abstract
A compact, inexpensive antenna sharing device meeting requirements in terms of transmitter distortion characteristic and ESD characteristic is provided which separates and combines signals transmitted and received in first to third signal bands and which thereby enables an antenna terminal to be shared as a common terminal. It includes a diplexer realizing an attenuation characteristic for protection against ESD, a compound semiconductor switch with an IIP3 of 66 dBm or more, and an inexpensive PIN diode switch.