JPS55128904A - Side lobe reducing antenna - Google Patents

Side lobe reducing antenna

Info

Publication number
JPS55128904A
JPS55128904A JP3642579A JP3642579A JPS55128904A JP S55128904 A JPS55128904 A JP S55128904A JP 3642579 A JP3642579 A JP 3642579A JP 3642579 A JP3642579 A JP 3642579A JP S55128904 A JPS55128904 A JP S55128904A
Authority
JP
Japan
Prior art keywords
wave
side lobe
wave absorber
antenna
region
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.)
Granted
Application number
JP3642579A
Other languages
Japanese (ja)
Other versions
JPS6158042B2 (en
Inventor
Nobuo Nakajima
Tadashi Takano
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP3642579A priority Critical patent/JPS55128904A/en
Publication of JPS55128904A publication Critical patent/JPS55128904A/en
Publication of JPS6158042B2 publication Critical patent/JPS6158042B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/001—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems for modifying the directional characteristic of an aerial

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

PURPOSE:To secure the easy reduction of the interference wave by installing the prescribed wave absorber to the effective area antenna. CONSTITUTION:The wave absorber is installed in region DELTAS which is part of reflector surface S of the effective area antenna, and both the position and form of region DELTAS are set so that radiation field E(theta) may be almost zero in direction theta where the reduction of the side lobe is desired, i.e., the conditions of the equation may be satisfied. In that case, f(s) is the main reflector surface field distribution, lambda is the wavelength, R is the distance between the centers of the transmission and the reception antennas, K is the wave number, and r(s) is the distance from region ds through the center of the reception antenna respectively. In such way, wave absorber 22 is installed on reflector surface 20 of the parabola antenna for example, thus giving reduction to the interference wave in the easy way. Furthermore, if the position of the wave absorber is set adjustably, the side lobe level can be reduced in the optional direction.
JP3642579A 1979-03-28 1979-03-28 Side lobe reducing antenna Granted JPS55128904A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3642579A JPS55128904A (en) 1979-03-28 1979-03-28 Side lobe reducing antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3642579A JPS55128904A (en) 1979-03-28 1979-03-28 Side lobe reducing antenna

Publications (2)

Publication Number Publication Date
JPS55128904A true JPS55128904A (en) 1980-10-06
JPS6158042B2 JPS6158042B2 (en) 1986-12-10

Family

ID=12469465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3642579A Granted JPS55128904A (en) 1979-03-28 1979-03-28 Side lobe reducing antenna

Country Status (1)

Country Link
JP (1) JPS55128904A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014174001A (en) * 2013-03-08 2014-09-22 Dainippon Printing Co Ltd Receiving device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014174001A (en) * 2013-03-08 2014-09-22 Dainippon Printing Co Ltd Receiving device

Also Published As

Publication number Publication date
JPS6158042B2 (en) 1986-12-10

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