Adaptive antenna apparatus including adaptive controller for...

Communications: radio wave antennas – Antennas – With radio cabinet

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07439918

ABSTRACT:
An adaptive antenna apparatus includes antenna elements. One of the antenna elements has an electrical length L1larger than λ/2, and equal to or smaller than a predetermined upper-limit wavelength, where λ is a wavelength of a radio signal. Another antenna element has an electrical length L2equal to or larger than a predetermined lower-limit wavelength and equal to or smaller than λ/2. A controller adaptive-controls the adaptive antenna apparatus to form a radiation pattern of the adaptive antenna apparatus including a plurality of nulls substantively in a direction of an interference wave by adjusting at least one of an amplitude and a phase of each radio signal received by the first and second antenna elements.

REFERENCES:
patent: 5617102 (1997-04-01), Prater
patent: 5940040 (1999-08-01), Koyanagi et al.
patent: 6147651 (2000-11-01), Yamazaki et al.
patent: 6806844 (2004-10-01), Azuma
patent: 6888504 (2005-05-01), Chiang et al.
patent: 6924766 (2005-08-01), Tran
patent: 2003/0189518 (2003-10-01), Johnson et al.
patent: 61-227404 (1986-10-01), None
patent: 8-251099 (1996-09-01), None
patent: 8-288895 (1996-11-01), None
patent: 9-247031 (1997-09-01), None
patent: 10-242739 (1998-09-01), None
patent: 11-215022 (1999-08-01), None
patent: 11-284424 (1999-10-01), None
patent: 2001-111326 (2001-04-01), None
patent: 2001-313525 (2001-11-01), None
International Search Report issued Jun. 13, 2007 in the International (PCT) Application of which the present application is the U.S. National Stage.
International Preliminary Examination Report issued in PCT/JP2005/022377, Form PCT/IB/373, Form PCT/ISA/237, date of mailing Jun. 21, 2007.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Adaptive antenna apparatus including adaptive controller for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive antenna apparatus including adaptive controller for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive antenna apparatus including adaptive controller for... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3989843

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.