| Title of Invention | A RADIO APPARATUS CAPABLE OF CALIBRATING TRANSMISSION CHARACTERISTICS, AND A CALIBRATION METHOD FOR THE SAID APPARATUS |
|---|---|
| Abstract | The present invention relates to a radio apparatus capable of calibrating transmission characteristics, comprising: n (n: integer greater than or equal to 3) signal transmission systems each comprising an antenna (ANT) as well as a transmission circuit (TX) and a receiving circuit (RX) sharing said antenna; control means performing control for transmitting a known signal from said transmission circuit of each of said n signal transmission systems and receiving said transmitted signal in said receiving circ,uits of a plurality of signal transmission systems comprised in said n signal transmission systems in calibration; signal processing means (PE, AE) provided for each said signal transmission system for performing prescribed signal processing on a' signal received in said receiving circuit of said signal transmission system with said known signal; storage means storing signals obtained by said signal processing means in said plurality of signal transmission systems; and arithmetic means , calculating information related to at least either a phase rotation quantity or an amplitude fluctuation quantity resulting in a signal from passage of said signal through each of said transmission circuit and said receiving circuit of each of said n signal transmission systems on the basis of said signals stored in said storage means. |
| Full Text |
|---|
in-pct-2001-0300-che abstract-duplicate.pdf
in-pct-2001-0300-che abstract.jpg
in-pct-2001-0300-che abstract.pdf
in-pct-2001-0300-che claims-duplicate.pdf
in-pct-2001-0300-che claims.pdf
in-pct-2001-0300-che correspondence-others.pdf
in-pct-2001-0300-che correspondence-po.pdf
in-pct-2001-0300-che description (complete) 1.pdf
in-pct-2001-0300-che description (complete)-duplicate 1.pdf
in-pct-2001-0300-che description (complete)-duplicate.pdf
in-pct-2001-0300-che description (complete).pdf
in-pct-2001-0300-che drawings-duplicate.pdf
in-pct-2001-0300-che drawings.pdf
in-pct-2001-0300-che form-1.pdf
in-pct-2001-0300-che form-19.pdf
in-pct-2001-0300-che form-26.pdf
in-pct-2001-0300-che form-3.pdf
in-pct-2001-0300-che form-5.pdf
in-pct-2001-0300-che pct search report.pdf
in-pct-2001-0300-che petition.pdf
| Patent Number | 229287 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Indian Patent Application Number | IN/PCT/2001/300/CHE | |||||||||
| PG Journal Number | 12/2009 | |||||||||
| Publication Date | 20-Mar-2009 | |||||||||
| Grant Date | 16-Feb-2009 | |||||||||
| Date of Filing | 05-Mar-2001 | |||||||||
| Name of Patentee | SANYO ELECTRIC CO., LTD | |||||||||
| Applicant Address | 5-5, KEIHANHONDORI 2-CHOME, MORIGUCHI-SHI, OSAKA 570-8677, | |||||||||
Inventors:
|
||||||||||
| PCT International Classification Number | H04B 7/08 | |||||||||
| PCT International Application Number | PCT/JP99/04173 | |||||||||
| PCT International Filing date | 1999-08-02 | |||||||||
PCT Conventions:
|
||||||||||