Title:
分波回路、高周波回路、高周波部品、及び通信装置
Document Type and Number:
Japanese Patent JP5418516
Kind Code:
B2
Abstract:
An inventive high frequency circuit includes a switch circuit (SPDT1), connected to an antenna terminal (Ant1), using a field-effect transistor for switching between a connection with first to third transmitting terminals (Tx1-1, Tx2-1, Tx3-1) and a connection with first to third receiving terminals (Rx1-1, Rx2-1, Rx3-1); a transmitting-side triplexer (Trip1) for branching a transmitting path connected to the switch circuit into transmitting paths of first to third frequency bands; and a receiving-side triplexer (Trip2) for branching a receiving path connected to the switch circuit into receiving paths of the first to third frequency bands. The switch circuit can be formed as an IC to downsize the circuit. For example, in constructing the high frequency circuit with a laminated module using a ceramic laminated substrate or the like, particularly when the number of triplexers occupying a large space is large, the switch circuit is formed as an IC and mounted on the laminated body, whereby the whole structure can be downsized.
Inventors:
Shigeru Kamochi
Fukamachi Keisuke
Kazuhiro Hagiwara
Fukamachi Keisuke
Kazuhiro Hagiwara
Application Number:
JP2011015070A
Publication Date:
February 19, 2014
Filing Date:
January 27, 2011
Export Citation:
Assignee:
Hitachi Metals Co., Ltd.
International Classes:
H03H7/075; H01P1/213; H03H7/12; H03H7/46; H04B1/40; H04B1/44
Domestic Patent References:
| JP2005057342A | ||||
| JP2006128881A | ||||
| JP8321738A | ||||
| JP2005354407A | ||||
| JP2001203601A | ||||
| JP2003198309A | ||||
| JP2006333258A | ||||
| JP2000216661A |
Attorney, Agent or Firm:
Seiji Ohno
Koji Morita
Reiko Tanaka
Kenichi Katayama
Koji Morita
Reiko Tanaka
Kenichi Katayama