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JPS56710A - Tuning type antenna unit - Google Patents

Tuning type antenna unit

Info

Publication number
JPS56710A
JPS56710A JP7624879A JP7624879A JPS56710A JP S56710 A JPS56710 A JP S56710A JP 7624879 A JP7624879 A JP 7624879A JP 7624879 A JP7624879 A JP 7624879A JP S56710 A JPS56710 A JP S56710A
Authority
JP
Japan
Prior art keywords
variable
tuning
reactance circuit
power feeding
elements
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
JP7624879A
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 JP7624879A priority Critical patent/JPS56710A/en
Publication of JPS56710A publication Critical patent/JPS56710A/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
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole

Landscapes

  • Details Of Aerials (AREA)

Abstract

PURPOSE:To easily obtain the wide band characteristics without increasing the number of antenna elements, by providing the first variable reactance circuit to the power feeding side of antenna element and the second variable reactance circuit to the power supply side. CONSTITUTION:The reactive component of the elements 9, 9' is canceled at the first parallel resonance variable reactance circuit connected to the power feeding side of the elements 9, 9' having the distributed constant inductance, and matching and tuning are made in the tuning frequency f2 with the capacitor 13 for impedance adjustment provided between the first power feeding terminals 12, 12' and variable tuning is made in frequencies f1-f2 to be tuned with the variable capacitors 11, 11'. Further, the second parallel resonant reactance circuit is connected to the terminals 12, 12' after being set to different value from the reactance value in the first circuit, and the original impedance curve can be turned on the constant conductance curve. Thus, the impedance curve shows two-peak characteristics and the band width can easily be extended.
JP7624879A 1979-06-14 1979-06-14 Tuning type antenna unit Pending JPS56710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7624879A JPS56710A (en) 1979-06-14 1979-06-14 Tuning type antenna unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7624879A JPS56710A (en) 1979-06-14 1979-06-14 Tuning type antenna unit

Publications (1)

Publication Number Publication Date
JPS56710A true JPS56710A (en) 1981-01-07

Family

ID=13599881

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7624879A Pending JPS56710A (en) 1979-06-14 1979-06-14 Tuning type antenna unit

Country Status (1)

Country Link
JP (1) JPS56710A (en)

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