JPS55132106A - Common-use unit for grounded type folded antenna - Google Patents

Common-use unit for grounded type folded antenna

Info

Publication number
JPS55132106A
JPS55132106A JP3911879A JP3911879A JPS55132106A JP S55132106 A JPS55132106 A JP S55132106A JP 3911879 A JP3911879 A JP 3911879A JP 3911879 A JP3911879 A JP 3911879A JP S55132106 A JPS55132106 A JP S55132106A
Authority
JP
Japan
Prior art keywords
common
use unit
frequencies
conductor
branching filters
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
JP3911879A
Other languages
Japanese (ja)
Inventor
Masashi Mitsukaichi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP3911879A priority Critical patent/JPS55132106A/en
Publication of JPS55132106A publication Critical patent/JPS55132106A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching

Landscapes

  • Details Of Aerials (AREA)

Abstract

PURPOSE:To make it possible to share a unit among frequencies by connecting frequency branching filters between an earth-side conductor and power-feed-side conductor. CONSTITUTION:Between earth conductor 1 and power-feed conductor 2, a common-use unit composed of branching filters is connected. Those branching filters are composed of parallel resonance circuits of half-fixed inductances L1 and L2, and capacitances C1 and C2. Then, the balancing reactance viewed from a feeding point increases at two resonance frequencies f1 and f2 by adequately setting each ratio of the inductance to capacitance, so that each balancing current can be minimized. Therefore, the common-use unit like this is added and can efficiently be shared among frequencies.
JP3911879A 1979-03-31 1979-03-31 Common-use unit for grounded type folded antenna Pending JPS55132106A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3911879A JPS55132106A (en) 1979-03-31 1979-03-31 Common-use unit for grounded type folded antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3911879A JPS55132106A (en) 1979-03-31 1979-03-31 Common-use unit for grounded type folded antenna

Publications (1)

Publication Number Publication Date
JPS55132106A true JPS55132106A (en) 1980-10-14

Family

ID=12544161

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3911879A Pending JPS55132106A (en) 1979-03-31 1979-03-31 Common-use unit for grounded type folded antenna

Country Status (1)

Country Link
JP (1) JPS55132106A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2713439A1 (en) * 2012-10-01 2014-04-02 Hager Security Electromagnetic antenna device with controllable inductance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2713439A1 (en) * 2012-10-01 2014-04-02 Hager Security Electromagnetic antenna device with controllable inductance
FR2996362A1 (en) * 2012-10-01 2014-04-04 Hager Security ELECTROMAGNETIC ANTENNA DEVICE

Similar Documents

Publication Publication Date Title
US3902177A (en) Antenna for direction finders
US4761623A (en) Broadband RFI power line filter
GB708597A (en) Radio frequency filter
JPS6347058Y2 (en)
GB628987A (en) Improvements in or relating to resonant aerials
GB692692A (en) Improvements in and relating to radio aerials
GB544140A (en) Electrical wave filters including trap circuits
JPS55132106A (en) Common-use unit for grounded type folded antenna
US3197720A (en) Transmission line having frequency reject band
US2147168A (en) Antenna system
GB1166986A (en) Resonant Bandpass Filter having Two Frequency Cancellation Traps
US2282968A (en) Coupling apparatus
US2774069A (en) Transmitter multiplexing system
US2617926A (en) Interference reducing radio receiving system
US1962910A (en) Coupling system
SU938161A1 (en) Vacuum capacitive voltage divider
US2558339A (en) Interference reducing radio receiving system
SU637896A1 (en) Hf filter for suppressing two independent frequencies
JPS63157501A (en) Active trap filter
GB1355098A (en) Rejection filter circuit
KR100216245B1 (en) Single sleeve antenna for multi-frequency
EP0147499A3 (en) Broadband impedance transformer and resonator
US2839751A (en) Transmitting apparatus for inductive prospecting
GB1034925A (en) Improvements in or relating to bridge circuit arrangements
US3374446A (en) Multicoupling system with a distribution line