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Title:
BROADBAND ANTENNA
Document Type and Number:
Japanese Patent JP3823293
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a broadband antenna, having a tapered slot antenna structure capable of easily changing the polarized wave faces and making the body small, when it is formed in an array form.
SOLUTION: Each tapered part 6 of a plurality of tapered slot antennas 3a and 3b on the opened side opposite to each other is formed on a dielectric board 1. When there are two tapered slot antennas 3a and 3b, a power feed unit 5 crossing a microstrip line 4 is formed on the side opposite to the opened side of one tapered slot antenna 3a so that electric waves are radiated in the broad-side direction when it is arrayed. In addition, four tapered slot antennas on the opened side are formed opposite to each other and the power is fed selectively to each tapered slot antenna in cross positions to change a vertical polarized wave or a horizontal polarized wave, or the power is fed at 90-degree phases at the same time, to radiate a circularly polarized wave.


Inventors:
Koichi Kobayashi
Atsushi Kanayama
Toshihiko Yamagata
Application Number:
JP2001378099A
Publication Date:
September 20, 2006
Filing Date:
December 12, 2001
Export Citation:
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Assignee:
富士通株式会社
International Classes:
H01P1/161; H01Q13/10; G01S7/02; G01S7/03; H01Q17/00; H01Q21/24; (IPC1-7): H01Q13/10; G01S7/02; G01S7/03; H01P1/161; H01Q17/00; H01Q21/24
Domestic Patent References:
JP4020102A
JP4207503A
JP53076247U
JP6268434A
JP6029723A
JP9298418A
JP6179307A
JP2000252738A
JP9298418A
JP310407A
JP2000196344A
Foreign References:
WO2001069723A1
WO2001052352A1
Attorney, Agent or Firm:
Manabe Kiyoshi
Shoji Kashiwaya
Koichi Watanabe
Toshiro Ito