Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1995-08-29
1996-12-17
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
342 81, 342157, H01Q 322
Patent
active
055858031
ABSTRACT:
In an apparatus and method for controlling an array antenna comprising a plurality of antenna elements arranged so as to be adjacent to each other in a predetermined arrangement configuration, a plurality of received signals received by the antenna elements is transformed into respective pairs of quadrature baseband signals, using a common local oscillation signal, wherein each pair of quadrature baseband signals is orthogonal to each other. Then predetermined first and second data are calculated based on each pair of transformed quadrature baseband signals, and are filtered using a noise suppressing filter. Respective elements of a transformation matrix for in-phase combining are calculated based on the filtered first and second data, and the received signals obtained from the each two antenna elements are put in phase based on the calculated transformation matrix. Thereafter, a plurality of received signals which are put in phase are combined in phase, and an in-phase combined received signal is outputted.
REFERENCES:
patent: 4204210 (1980-05-01), Hose
patent: 4241351 (1980-12-01), Shreve
patent: 4492962 (1985-01-01), Hansen
patent: 4996532 (1991-02-01), Kirimoto et al.
patent: 5087917 (1992-02-01), Fujisaka et al.
patent: 5128683 (1992-07-01), Freedman et al.
patent: 5181040 (1993-01-01), Inoue et al.
patent: 5283587 (1994-02-01), Hirshfield et al.
patent: 5396256 (1995-03-01), Chiba et al.
"A Phased Array Tracking Antenna for Vehicles", by S. Ohmori et al, Technical Report on Antenna and Propagation, A.P. 90-75, pp. 33-40, The Institute of Electronics Information and Comminication Engineers in Japan, Oct. 1990.
"Phase Detection Scheme in Digital Beam Forming (DBF) Antenna for Mobile Radio Communications", K. Kashiki et al, Technical Report on Antenna propagation study group, The Institute of Electronics, Information and Communication Engineers, Japan A.P. 88-144, Feb. 17, 1989.
"A Phased Array Tracking Antenna for Vehicles", S. Ohmori et al, proceedings of International Mobile Satellite Conference Ottawa, Jun. 1990.
"A Phased Array Tracking Antenna for Vehicles", S. Ohmori et al, Technical Report on Antenna propagation study group, The Institute of Electronics, Information and Communication Engineers, Japan A.P. 90-75, SANE90-41, Oct. 1990.
"A Flexible Processor for a Digital Adaptive Array Radar", K. Teitelbaum, pp. 103-107 Proceedings of the 1991 IEEE National Radar Conference, Mar. 12-13, 1991.
"Characteristics of CMA Adaptive Array for Selective Fading Compensation in Digital Land Mobile Radio Communications", T. Ohkane et al, Proceedings of the Institute of the Electronics, Information and Communication Engineers, Japan, vol. J73-B-II, No. 10. pp. 489-497, Oct. 1990.
"Null Beam Forming by Phase Control of Selected Elements in Phased-Array Antennas", I. Chiba et al, Proceedings of the Institute of the Electronics, Information and Communication Engineers, Japan, vol. J74-B-II, No. 1. pp. 35-42, Jan. 1991.
"Design of a Directional Diversity Receiver Using an Adaptive Array Antenna", N. Kuroiwa et al, Proceedings of the Institute of the Electronics, Information and Communication Engineers, Japan vol. J73-B-II, No. 11, pp. 755-763, Nov. 1990.
Chiba Isamu
Karasawa Yoshio
Miura Ryu
Tanaka Toyohisa
ATR Optical and Radio Communications Research Labs
Phan Dao L.
Tarcza Thomas H.
LandOfFree
Apparatus and method for controlling array antenna comprising a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for controlling array antenna comprising a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for controlling array antenna comprising a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1994699