JPS5496390A - Radar device - Google Patents

Radar device

Info

Publication number
JPS5496390A
JPS5496390A JP346778A JP346778A JPS5496390A JP S5496390 A JPS5496390 A JP S5496390A JP 346778 A JP346778 A JP 346778A JP 346778 A JP346778 A JP 346778A JP S5496390 A JPS5496390 A JP S5496390A
Authority
JP
Japan
Prior art keywords
reception
polarized wave
wave
circular polarized
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP346778A
Other languages
Japanese (ja)
Inventor
Shigekazu Hori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP346778A priority Critical patent/JPS5496390A/en
Publication of JPS5496390A publication Critical patent/JPS5496390A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/001—Crossed polarisation dual antennas

Abstract

PURPOSE:To prevent the S/N lowering at the rain fall time by using the slot antenna which is formed in such a way that both the transmission and reception is possible for the circular polarized wave with a set of the slot antenna and the reception wave can be taken out at different feeder terminals in accordance with the rotary directions of the polarized wave. CONSTITUTION:The electromagnetic wave of the right-turned circular polarized wave radiated from each slot pair A1 and B1 hits the spot-symmetric object such as the rain drops or the like and is then reflected in the form of the left-turned circular polarized wave to return to antenna 14. Then field EA1 and EB1 are generated at slot pair A1 and B1, and EA1 features more advanced phase by 90 deg.C than EB1 because of the left-turned circular polarized wave. Therefore, the signals on strip line conductor 144 advance toward feeder terminal 142 to be led to second receiver 122 in the form of the reception signals, and are not transmitted toward terminal 141. At the rain fall time, switch 15 and 17 are connected to the b-side, and the output of first receiver 121 is taken out at reception output terminal 18. Thus, the reception output of excellent S/N can be obtained with no component of the reflected wave contained.
JP346778A 1978-01-17 1978-01-17 Radar device Pending JPS5496390A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP346778A JPS5496390A (en) 1978-01-17 1978-01-17 Radar device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP346778A JPS5496390A (en) 1978-01-17 1978-01-17 Radar device

Publications (1)

Publication Number Publication Date
JPS5496390A true JPS5496390A (en) 1979-07-30

Family

ID=11558124

Family Applications (1)

Application Number Title Priority Date Filing Date
JP346778A Pending JPS5496390A (en) 1978-01-17 1978-01-17 Radar device

Country Status (1)

Country Link
JP (1) JPS5496390A (en)

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