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GB697193A - Reflection-free antenna - Google Patents

Reflection-free antenna

Info

Publication number
GB697193A
GB697193A GB9788/51A GB978851A GB697193A GB 697193 A GB697193 A GB 697193A GB 9788/51 A GB9788/51 A GB 9788/51A GB 978851 A GB978851 A GB 978851A GB 697193 A GB697193 A GB 697193A
Authority
GB
United Kingdom
Prior art keywords
termination
aerials
shows
base
series
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.)
Expired
Application number
GB9788/51A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB697193A publication Critical patent/GB697193A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/28—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave comprising elements constituting electric discontinuities and spaced in direction of wave propagation, e.g. dielectric elements or conductive elements forming artificial dielectric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/04—Non-resonant antennas, e.g. travelling-wave antenna with parts bent, folded, shaped, screened or electrically loaded to obtain desired phase relation of radiation from selected sections of the antenna
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave

Landscapes

  • Details Of Aerials (AREA)

Abstract

697,193. Aerials. TELEFONAKTIEBOLAGET L. M. ERICSSON. April 26, 1951 [May 3, 1950; March 30, 1951], No. 9788/51. Class 40 (vii). In a travelling-wave aerial, the free ends are terminated by impedances, the reactance component of which increases in the direction of the ends. As shown in Fig. 3, the termination, of which the Figure shows a portion, may comprise a series of capacitively coupled sleeves mounted upon a common core 6. Fig. 6 shows a helically wound inductive termination, the material thereof being also resistive. The resistive material may be applied directly in the shape shown to the base 21 of insulating material or the base may be completely covered and material subsequently removed to produce the desired shape. Fig. 7 shows a termination comprising a series of capacitively coupled conducting elements mounted on an insulating base 31. Figs. 8 and 9 (not shown), show modifications wherein the thickness or the superficial area of the elements varies along the length of the termination. The aerials incorporating these terminations may consist wholly of pieces having a varying impedance per unit length, or the end portions only may be constructed as shown. Figs. 4 and 5 show loop aerials having varying reactive elements 10 and 14 and one and two feed-points 11 and 13 respectively.
GB9788/51A 1950-05-03 1951-04-26 Reflection-free antenna Expired GB697193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE697193X 1950-05-03

Publications (1)

Publication Number Publication Date
GB697193A true GB697193A (en) 1953-09-16

Family

ID=20315361

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9788/51A Expired GB697193A (en) 1950-05-03 1951-04-26 Reflection-free antenna

Country Status (5)

Country Link
US (1) US2712602A (en)
DE (1) DE849123C (en)
FR (1) FR1047716A (en)
GB (1) GB697193A (en)
NL (2) NL76969C (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966679A (en) * 1957-11-13 1960-12-27 Edward F Harris Unloaded helical antenna
US3009982A (en) * 1958-03-10 1961-11-21 Morris M Newman Lightning diverters
US3079602A (en) * 1958-03-14 1963-02-26 Collins Radio Co Logarithmically periodic rod antenna
DK110213C (en) * 1963-03-22 1971-01-18 Allgon Antennspecialisten Akti Directional antenna.
US3325814A (en) * 1965-06-23 1967-06-13 Sanders Associates Inc Broadband receiving antenna
US4829310A (en) * 1981-10-02 1989-05-09 Eyring Research Institute, Inc. Wireless communication system using current formed underground vertical plane polarized antennas
US4809010A (en) * 1981-10-02 1989-02-28 Canon Kabushiki Kaisha Low profile wireless communication system and method
US4825224A (en) * 1986-09-02 1989-04-25 Eyring Research Institute, Inc. Broad band impedance matching system and method for low-profile antennas
WO1989012330A1 (en) * 1988-06-03 1989-12-14 Eyring Research Institute, Inc. Wireless communication system and method using current formed underground vertical plane polarized antennas
WO1989012331A1 (en) * 1988-06-03 1989-12-14 Eyring Research Institute, Inc. Low profile wireless communication system and method
WO1996007216A1 (en) * 1994-08-26 1996-03-07 Westinghouse Electric Corporation Nonsquinting end-fed quadrifilar helical antenna

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE576776C (en) * 1933-05-18 Telefunken Gmbh Dipole antenna
US2165958A (en) * 1933-12-23 1939-07-11 Rca Corp Aperiodic antenna
US2159637A (en) * 1935-04-30 1939-05-23 Mackay Radio & Telegraph Compa Antenna system
US2411976A (en) * 1944-08-31 1946-12-03 Rca Corp Broad band radiator
US2588610A (en) * 1946-06-07 1952-03-11 Philco Corp Directional antenna system
GB628986A (en) * 1946-10-01 1949-09-08 Edward Cecil Cork Improvements in or relating to aerials

Also Published As

Publication number Publication date
NL160940B (en)
FR1047716A (en) 1953-12-16
NL76969C (en)
DE849123C (en) 1952-09-11
US2712602A (en) 1955-07-05

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