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Patent Searching and Data


Title:
WIRELESS COMMUNICATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2006/057085
Kind Code:
A1
Abstract:
Existing modems of time division duplex (TDD) system can be utilized, as they are, to perform a high-rate wireless communication with a stable communication quality in other frequency bands such as submillimeter to millimeter wave bands. There are included a circulator (11) that is connected to TDD modems (1,2) and receives signals transmitted thereby to output those signals to a first connection terminal (p1) and that outputs signals received from a second connection terminal (p2) to the TDD modems (1,2); and a frequency converter (2a) that raises the signals from the circulator (11) by a predetermined frequency width and lowers the frequency of the signals from a reception antenna (32) by a predetermined frequency width. It may be arranged that the frequency conversion width be made different between the uplink and the downlink and that a filter, which blocks the transmission wireless frequency and passes the reception wireless frequency, is provided between the reception antenna (32) and a frequency converter (22a).

Inventors:
FUKUMOTO YOSHITO (JP)
MANABE CHITAKA (JP)
GOTO YUICHIRO (JP)
IKEDA HIDEO (JP)
INOUE KOJI (JP)
KEGASA KOYO (JP)
Application Number:
PCT/JP2005/009320
Publication Date:
June 01, 2006
Filing Date:
May 23, 2005
Export Citation:
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Assignee:
KOBE STEEL LTD (JP)
FUKUMOTO YOSHITO (JP)
MANABE CHITAKA (JP)
GOTO YUICHIRO (JP)
IKEDA HIDEO (JP)
INOUE KOJI (JP)
KEGASA KOYO (JP)
International Classes:
H04B7/212; H04B1/40
Foreign References:
JP2002335199A2002-11-22
JPH02207626A1990-08-17
JPH0936793A1997-02-07
JPH0568143U1993-09-10
JP2003124839A2003-04-25
JPH11196019A1999-07-21
JPH09121146A1997-05-06
JPH0832383A1996-02-02
Other References:
TOYODA K. ET AL: "HiSWANa/b Junkyo 5/25GHz-tai Dual Band Musen LAN Card-gata Tanmatu no Shisaku", IEICE COMMUNICATIONS SOCIETY CONFERENCE KOEN RONBUNSHU 1, vol. B-5-173, 10 September 2003 (2003-09-10), pages 550, XP003006191
Attorney, Agent or Firm:
Kawamiya, Osamu (IMP Building 3-7, Shiromi 1-chome, Chuo-k, Osaka-shi Osaka 01, JP)
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