JPS54136190A - Array antenna for single-beam scanning radar - Google Patents

Array antenna for single-beam scanning radar

Info

Publication number
JPS54136190A
JPS54136190A JP4404378A JP4404378A JPS54136190A JP S54136190 A JPS54136190 A JP S54136190A JP 4404378 A JP4404378 A JP 4404378A JP 4404378 A JP4404378 A JP 4404378A JP S54136190 A JPS54136190 A JP S54136190A
Authority
JP
Japan
Prior art keywords
antenna
beam direction
frequency
omegao
thetao
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
JP4404378A
Other languages
Japanese (ja)
Inventor
Hitoshi Hirasawa
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4404378A priority Critical patent/JPS54136190A/en
Publication of JPS54136190A publication Critical patent/JPS54136190A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/22—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation in accordance with variation of frequency of radiated wave

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To secure a constant data rate as well as to increase the number of the pulse bit to the specified target by varying the radar transmission frequency with adding no special parts nor functions to the antenna. CONSTITUTION:Radiation elements A1-An are arranged on series feeder line length l with space d between. With variation of frequency f, the beam direction theta of the antenna shifts. And the direction of elevation angle is scanned via phase shifter B, and then the antenna has a mechanical turn clockwise by angle omegaO during time tO'-tO. If the beam direction from normal line 2 of antenna 1 is set to thetaO at normal using frequency fO, beam direction 4 shifts by omegaO from target 3 after tO'-tO. Accordingly, a variation is secured from frequency fO by a fixed amount so that thetaO' = thetaO - omegaO may be secured for the beam direction from normal line 2' when antenna state 1' is obtained. Thus, beam direction 5 turns toward target 3, increasing the number of the pulse bit.
JP4404378A 1978-04-13 1978-04-13 Array antenna for single-beam scanning radar Pending JPS54136190A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4404378A JPS54136190A (en) 1978-04-13 1978-04-13 Array antenna for single-beam scanning radar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4404378A JPS54136190A (en) 1978-04-13 1978-04-13 Array antenna for single-beam scanning radar

Publications (1)

Publication Number Publication Date
JPS54136190A true JPS54136190A (en) 1979-10-23

Family

ID=12680583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4404378A Pending JPS54136190A (en) 1978-04-13 1978-04-13 Array antenna for single-beam scanning radar

Country Status (1)

Country Link
JP (1) JPS54136190A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4779097A (en) * 1985-09-30 1988-10-18 The Boeing Company Segmented phased array antenna system with mechanically movable segments
JP2012198138A (en) * 2011-03-22 2012-10-18 Denso Corp Axis adjusting method and axis adjusting system of array antenna

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5026360A (en) * 1973-07-10 1975-03-19
JPS5327776B2 (en) * 1974-08-07 1978-08-10

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5026360A (en) * 1973-07-10 1975-03-19
JPS5327776B2 (en) * 1974-08-07 1978-08-10

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4779097A (en) * 1985-09-30 1988-10-18 The Boeing Company Segmented phased array antenna system with mechanically movable segments
JP2012198138A (en) * 2011-03-22 2012-10-18 Denso Corp Axis adjusting method and axis adjusting system of array antenna

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