Title:
INTERFERENCE WAVE ELIMINATION DEVICE
Document Type and Number:
Japanese Patent JP2858508
Kind Code:
B2
Abstract:
PURPOSE: To realize elimination of a broad band interference wave and of a multi-path distortion without damaging the diversity effect.
CONSTITUTION: A transmitter 11 sends radio frequency signals of V and H polarized waves having a delay time τ. A receiver 12 uses a power inversion adaptive array comprising circuits 108-120 to eliminate a broad band interference wave between polarized diversity branches. A changeover device 120 selects an output of an adder 116 when an interference wave is not eliminated and selects an output of a subtractor 117 when the interference is eliminated. The output of the changeover device 120 is subjected to adaptive equalization by an adaptive matching filter 121 and a discrimination feedback equalizer 122. When no interference wave is received between both VH polarized waves, antenna controllers 106, 124 apply rotation control of the polarized face of a transmission antenna 105 and a reception antenna 107 respectively.
Inventors:
TSUJIMOTO ICHIRO
Application Number:
JP21587892A
Publication Date:
February 17, 1999
Filing Date:
August 13, 1992
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
H03H15/00; H03H17/00; H03H17/02; H03H21/00; H04B3/04; H04B7/005; H04B7/10; (IPC1-7): H04B7/10; H03H15/00; H03H21/00; H04B7/005
Domestic Patent References:
| JP435546A | ||||
| JP58197929A | ||||
| JP5344029A | ||||
| JP2177625A |
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)