Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
RADIO APPARATUS, METHOD FOR RECEIVING ITS SIGNAL, METHOD FOR MEASURING ITS FILTER COEFFICIENT, AND PROGRAM FOR MEASURING ITS FILTER COEFFICIENT
Document Type and Number:
WIPO Patent Application WO/2003/021813
Kind Code:
A1
Abstract:
A radio apparatus is provided with analog RF circuits (1−4) by corresponding to antennas (A1−A4), and the circuits’ outputs are converted into digital signals by A&sol D convertors (5−8). The preceeding stage of adaptive processing that is its succeeding stage is provided with correction filters (12−15). Each correction filter has a filter coefficient for compensating for the difference between the characteristics of corresponding analog RF circuits and ideal circuit characteristics. This compensates for an error in characteristics between analog RF circuits. These actions are executed by DSP with software programs.

Inventors:
Doi, Yoshiharu c/o SANYO ELECTRIC CO. (LTD. 5-5 Keihanhondori 2-chome Moriguchi-shi, Osaka, 570-8677, JP)
Application Number:
PCT/JP2002/008391
Publication Date:
March 13, 2003
Filing Date:
August 20, 2002
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SANYO ELECTRIC CO., LTD. (5-5 Keihanhondori 2-chome Moriguchi-shi, Osaka, Osaka, 570-8677, JP)
Doi, Yoshiharu c/o SANYO ELECTRIC CO. (LTD. 5-5 Keihanhondori 2-chome Moriguchi-shi, Osaka, 570-8677, JP)
International Classes:
H01Q3/26; H03H17/02; H04B1/10; H04B7/08; H04B7/26; (IPC1-7): H04B7/10; H01Q3/26
Foreign References:
JPH04302543A
JPH07170117A
JPH118507A
JPH11101828A
JP2001156688A
Attorney, Agent or Firm:
Fukami, Hisao (Fukami Patent Office Mitsui Sumitomo Bank Minamimorimachi Bldg. 1-29, Minamimorimachi 2-chome Kita-ku Osaka-shi, Osaka, 530-0054, JP)
Download PDF: