ADAPTIVE ANTENNA

Japanese Patent JP2005109910

A

To obtain an adaptive antenna which raises the calculation accuracy of the load to raise the performance of suppressing unwanted waves.

The antenna comprises a delay time estimator 2 for estimating the delay time D of delayed waves from direct waves, based on received signals at any one element antenna 1-1 among receives signals at M element antennas 1-1 to 1-M, and delay units 3-1 to 3-M for delaying the received signals at the M element antennas 1-1 to 1-M by the delay time D.The loads w1-wM are calculated from the received signal at the antenna element 1-1 and a plurality of delay signals provided by the delay units 3-1 to 3-M so as to minimize the power of a difference signal outputted from a subtractor 7.

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HIRATA KAZUFUMI
KIHIRA KAZUNARI
MIYASHITA HIROAKI
ARITA EIJI
MORITA MASAKAZU

JP2003341042A

April 21, 2005

September 30, 2003

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MITSUBISHI ELECTRIC CORP

H04J11/00; H04B7/02; H04B7/08; H04B7/10; (IPC1-7): H04B7/10; H04B7/02; H04B7/08; H04J11/00

Hiroaki Tazawa
Konobu Kato
Hideaki Tazawa
Hamada Hatsune

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