JPS56712A - Antenna unit - Google Patents

Antenna unit

Info

Publication number
JPS56712A
JPS56712A JP7625179A JP7625179A JPS56712A JP S56712 A JPS56712 A JP S56712A JP 7625179 A JP7625179 A JP 7625179A JP 7625179 A JP7625179 A JP 7625179A JP S56712 A JPS56712 A JP S56712A
Authority
JP
Japan
Prior art keywords
impedance
capacitor
curve
antenna element
power feeding
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
JP7625179A
Other languages
Japanese (ja)
Inventor
Joji Kane
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7625179A priority Critical patent/JPS56712A/en
Priority to US06/158,132 priority patent/US4381566A/en
Priority to CA000353876A priority patent/CA1152660A/en
Priority to DE8080302020T priority patent/DE3066820D1/en
Priority to EP80302020A priority patent/EP0021762B1/en
Publication of JPS56712A publication Critical patent/JPS56712A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)

Abstract

PURPOSE:To increase the operating gain by providing the capacitor for impedance adjustment, between the power feeding terminals of a pair of antennas connecting the two terminal variable reactance circuit to the antenna element taking greater the distributed inductance value. CONSTITUTION:Since the shorted antenna element uses metal foil low in electric resistance and is formed with the forming pattern folding required points with respective directions and angles for required number of times, then when they are continuously arranged with alternative distribution toward length and orthogonal direction, the distributed inductance is operated to be equivalent as being added with coils to cancel the reactance. Accordingly, the pattern is designed to obtain the impedance as the curve A at frequencies f1-f2-f3 of the elements 8, 8' and the impedance with the variable capacitors 12, 12' of the two terminal variable reactance circuit connected to it and the capacitor 14 inserted between the power feeding terminals cause the impedance as the curve C, allowing to increase the operating gain.
JP7625179A 1979-06-14 1979-06-14 Antenna unit Pending JPS56712A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP7625179A JPS56712A (en) 1979-06-14 1979-06-14 Antenna unit
US06/158,132 US4381566A (en) 1979-06-14 1980-06-10 Electronic tuning antenna system
CA000353876A CA1152660A (en) 1979-06-14 1980-06-12 Electronic tuning antenna system
DE8080302020T DE3066820D1 (en) 1979-06-14 1980-06-16 Electronic tuning antenna system
EP80302020A EP0021762B1 (en) 1979-06-14 1980-06-16 Electronic tuning antenna system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7625179A JPS56712A (en) 1979-06-14 1979-06-14 Antenna unit

Publications (1)

Publication Number Publication Date
JPS56712A true JPS56712A (en) 1981-01-07

Family

ID=13599966

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7625179A Pending JPS56712A (en) 1979-06-14 1979-06-14 Antenna unit

Country Status (1)

Country Link
JP (1) JPS56712A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4591171A (en) * 1984-03-02 1986-05-27 Sheffer Collet Company Seal for air charging a chuck
JPS62122401A (en) * 1985-11-22 1987-06-03 Dia Kogyo Kk Zigzag antenna conductor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4591171A (en) * 1984-03-02 1986-05-27 Sheffer Collet Company Seal for air charging a chuck
JPS62122401A (en) * 1985-11-22 1987-06-03 Dia Kogyo Kk Zigzag antenna conductor

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