JPS5561107A - Short wave reception system - Google Patents

Short wave reception system

Info

Publication number
JPS5561107A
JPS5561107A JP13499978A JP13499978A JPS5561107A JP S5561107 A JPS5561107 A JP S5561107A JP 13499978 A JP13499978 A JP 13499978A JP 13499978 A JP13499978 A JP 13499978A JP S5561107 A JPS5561107 A JP S5561107A
Authority
JP
Japan
Prior art keywords
reflective screen
frequency
semicircle
focuses
focus
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
JP13499978A
Other languages
Japanese (ja)
Inventor
Yasutaro Kato
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.)
DKK Co Ltd
Original Assignee
Denki Kogyo 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 Denki Kogyo Co Ltd filed Critical Denki Kogyo Co Ltd
Priority to JP13499978A priority Critical patent/JPS5561107A/en
Publication of JPS5561107A publication Critical patent/JPS5561107A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • H01Q19/17—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

PURPOSE:To attain reception with invariably-excellent directivity regardless of a frequency by a reflective screen made of conductors extending along a semicircle and nearly perpendicular to the ground, and an antenna provided inside of this reflective screen. CONSTITUTION:Reflective screen 1 is composed of several linear conductors 2 implanted along a semicircle and nearly perpendicular to the ground. Respective conductors 2 are closely arranged at mutual array intervals less than the wavelength of the highest frequency in a frequency band, and their height is greater than the highest frequency. At the position of focus F and those fixed along focuses B and B', several antennas R4 are provided at adequate intervals and antennas on focuses B and B' are connected to focus F by feeders.
JP13499978A 1978-11-01 1978-11-01 Short wave reception system Pending JPS5561107A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13499978A JPS5561107A (en) 1978-11-01 1978-11-01 Short wave reception system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13499978A JPS5561107A (en) 1978-11-01 1978-11-01 Short wave reception system

Publications (1)

Publication Number Publication Date
JPS5561107A true JPS5561107A (en) 1980-05-08

Family

ID=15141560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13499978A Pending JPS5561107A (en) 1978-11-01 1978-11-01 Short wave reception system

Country Status (1)

Country Link
JP (1) JPS5561107A (en)

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