Title:
RADIO DEVICE
Document Type and Number:
WIPO Patent Application WO/2004/082171
Kind Code:
A1
Abstract:
A radio device which sets up a radio transmission line between a transmission end of a wave received by an antenna and the radio device through the antenna after deducing the direction in which the received wave has arrived. The radio device is adapted to a change in environment condition and a variation with time without greatly changing the constitution, and the transmission quality is stably maintained. The radio device comprises two receiving means for detecting parallel and alternately the received wave that has arrived at two elements from a common transmission end for every period that is an integral multiple of the symbol period of the received wave and an arrival angle calculating means (13) for calculating every period the angle of arrival of the received wave as an inverse function of the difference between “the two phases proportional to the distance between the two elements, given respectively to the function of the effective arrangement of the elements and the angle of arrival, and commonly including the phase shift of the two receiving means”.
Inventors:
KOBAYAKAWA SHUJI (JP)
Application Number:
PCT/JP2003/002844
Publication Date:
September 23, 2004
Filing Date:
March 11, 2003
Export Citation:
Assignee:
FUJITSU LTD (JP)
KOBAYAKAWA SHUJI (JP)
KOBAYAKAWA SHUJI (JP)
International Classes:
G01S3/46; G01S3/808; H01Q3/26; H04B7/08; H04B7/10; (IPC1-7): H04B7/10; G01S3/46
Foreign References:
| JPH10177064A | 1998-06-30 | |||
| JPH10229307A | 1998-08-25 | |||
| JP2001281316A | 2001-10-10 |
Attorney, Agent or Firm:
Furuya, Fumio (9th Floor 19-5, Nishishinjuku 1-chom, Shinjuku-ku Tokyo, JP)
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