Invention Grant
- Patent Title: Transmission circuit and radio communication apparatus
- Patent Title (中): 传输电路和无线电通信装置
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Application No.: US12922798Application Date: 2009-03-26
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Publication No.: US08743706B2Publication Date: 2014-06-03
- Inventor: Akihiro Kirisawa
- Applicant: Akihiro Kirisawa
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2008-083675 20080327
- International Application: PCT/JP2009/056130 WO 20090326
- International Announcement: WO2009/119743 WO 20091001
- Main IPC: H04J3/14
- IPC: H04J3/14 ; H04L12/26 ; H04B10/077
Abstract:
In a transmission circuit used in a TDD scheme, a preset current is supplied from a current source to a detection diode via a switch that is made conductive during a reception period and made non-conductive during a transmission period. A determination is made if the output of the detection diode is within a predetermined specified range and, if the output is out of the specified range, a judgment is made that the detection diode is faulty.
Public/Granted literature
- US20110026426A1 TRANSMISSION CIRCUIT AND RADIO COMMUNICATION APPARATUS Public/Granted day:2011-02-03
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