Title:
SIDE LOBE CANCELLER
Document Type and Number:
Japanese Patent JPH1188208
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress plural interference waves and to reduce a producing cost through the use of only two element antenna by outputting a sum signal and a difference signal from the received signals of two antennas so as to output a difference signal between a sum signal by way of an amplitude equalizing means and the output signal of an adaptive filter. SOLUTION: An array antenna 11 consisting of plural element antennas outputs the sum signal of the received signal of the two antennas to an adding means 4 and the difference signal to a subtracting means 5. A pair of amplitude equalizing means 6a and 6b respectively connected with the means 4 and 5 are respectively provided with the amplitude of interference wave components included in the sum signal and the difference signal. The adaptive filter 20 obtains a load to weight to a difference signal based on the inputs of the difference signal of the means 5 and a difference signal by way of the means 6b, and outputs a signal obtained by loading to the difference signal. A subtracting means 10 outputs a difference signal between a sum signal by way of the means 6a and the output signal of the filter 20.
Inventors:
HIRATA KAZUFUMI
KAWAAI TAKASHI
HARASAWA YASUHIRO
KAWAAI TAKASHI
HARASAWA YASUHIRO
Application Number:
JP18767598A
Publication Date:
March 30, 1999
Filing Date:
July 02, 1998
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H01Q3/26; H01Q25/02; H03H21/00; H04B1/10; H04B7/005; H04B7/08; (IPC1-7): H04B1/10; H01Q3/26; H01Q25/02; H03H21/00; H04B7/005; H04B7/08
Attorney, Agent or Firm:
Soga Doteru (6 people outside)
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