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)
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:
Assignee:
KOBE STEEL LTD (JP)
FUKUMOTO YOSHITO (JP)
MANABE CHITAKA (JP)
GOTO YUICHIRO (JP)
IKEDA HIDEO (JP)
INOUE KOJI (JP)
KEGASA KOYO (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:
JP2002335199A | 2002-11-22 | |||
JPH02207626A | 1990-08-17 | |||
JPH0936793A | 1997-02-07 | |||
JPH0568143U | 1993-09-10 | |||
JP2003124839A | 2003-04-25 | |||
JPH11196019A | 1999-07-21 | |||
JPH09121146A | 1997-05-06 | |||
JPH0832383A | 1996-02-02 |
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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