US3324476A - Broad band antenna - Google Patents

Broad band antenna Download PDF

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Publication number
US3324476A
US3324476A US428332A US42833265A US3324476A US 3324476 A US3324476 A US 3324476A US 428332 A US428332 A US 428332A US 42833265 A US42833265 A US 42833265A US 3324476 A US3324476 A US 3324476A
Authority
US
United States
Prior art keywords
broad band
antenna
loop
section
central
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 - Lifetime
Application number
US428332A
Other languages
English (en)
Inventor
Jr Valor C Smith
John O Watson
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.)
LAN JEN CHU
Original Assignee
LAN JEN CHU
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 LAN JEN CHU filed Critical LAN JEN CHU
Priority to US428332A priority Critical patent/US3324476A/en
Priority to SE775/66A priority patent/SE315640B/xx
Priority to DE19661491925D priority patent/DE1491925B1/de
Priority to GB3125/66A priority patent/GB1076233A/en
Priority to NO161422A priority patent/NO117430B/no
Application granted granted Critical
Publication of US3324476A publication Critical patent/US3324476A/en
Assigned to LIQUID CRYSTAL TECHNOLOGY, INC., reassignment LIQUID CRYSTAL TECHNOLOGY, INC., SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DAVIS, FREDERICK
Assigned to BAYBANK MIDDLESEX reassignment BAYBANK MIDDLESEX LICENSE (SEE DOCUMENT FOR DETAILS). Assignors: CHU ASSOCIATES, INC. A CORP. OF MA
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • H01Q9/285—Planar dipole
    • 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
    • H01Q13/10—Resonant slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Definitions

  • the present invention relates to broad band antennas and, more specifically, to monopole antennas of the very broad band type.
  • a further object is to provide a novel antenna of more general use, as well.
  • the antenna of the invention contemplates a closed loop of critically oriented sections from which substantially parallel arrays or conductors of radically different dimensions extend in opposite directions. Preferred constructional details are hereinafter set forth.
  • a closed loop L comprising a first horizontally oriented central straight section 1 bounded by upper and lower substantially parallel spaced segments 1' and 1", fed near their centers by the inner conductor 2 and the outer conductor 2' of a coaxial feed line, so as to effect a shunt-type of feed for transmission or reception.
  • Similar diverging acute-angle sections are provided at 3 and 3, terminating, in turn, in similar horizontal straight sections 5 and 5'.
  • Upper and lower arrays 4 and 4' of substantially parallel conductors or radiators extend in opposite directions from the upper and lower segments of the loop L, and substantially coplanar therewith, and with the conductors 7 of the array 4 being of much greater length than the conductors 7 of the array 4 for purposes later explained.
  • the lower ends of conductors 7 of the array 4 and the upper ends of conductors 7 of the array 4 are connected together by a rectangular conductive frame 9 that also closes off the left and right hand ends of the loop sections 5 and 5'.
  • the conductors 7 and 7' preferably are horizontally spaced a distance similar to the width of the loop L, but in all cases a distance very small compared to the smallest wave length to be used with the antenna so as, in effect, to present the appearance of a relatively continuous conductive surface.
  • planar antenna of the present invention When the planar antenna of the present invention is employed on aircraft or in other areas where streamlining is essential, it may be imbedded in a plastic tear-shaped housing 11.
  • a broad band substantially planar antenna having, in combination, a closed loop of substantially parallel spaced segments comprising a central straight section terminating at its ends in similar diverging sections that terminate, in turn, in similar straight sections substantially parallel to the central section but of shorter length, feed means connected to opposite spaced segments of the central loop section, and a pair of arrays of substantially parallel conductors extending in opposite directions from the loop sections, one array being of much shorter length than the other.

Landscapes

  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
US428332A 1965-01-27 1965-01-27 Broad band antenna Expired - Lifetime US3324476A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US428332A US3324476A (en) 1965-01-27 1965-01-27 Broad band antenna
SE775/66A SE315640B (enrdf_load_html_response) 1965-01-27 1966-01-21
DE19661491925D DE1491925B1 (de) 1965-01-27 1966-01-24 Senkrechte Schlitzantenne
GB3125/66A GB1076233A (en) 1965-01-27 1966-01-24 Broad band antenna
NO161422A NO117430B (enrdf_load_html_response) 1965-01-27 1966-01-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US428332A US3324476A (en) 1965-01-27 1965-01-27 Broad band antenna

Publications (1)

Publication Number Publication Date
US3324476A true US3324476A (en) 1967-06-06

Family

ID=23698436

Family Applications (1)

Application Number Title Priority Date Filing Date
US428332A Expired - Lifetime US3324476A (en) 1965-01-27 1965-01-27 Broad band antenna

Country Status (5)

Country Link
US (1) US3324476A (enrdf_load_html_response)
DE (1) DE1491925B1 (enrdf_load_html_response)
GB (1) GB1076233A (enrdf_load_html_response)
NO (1) NO117430B (enrdf_load_html_response)
SE (1) SE315640B (enrdf_load_html_response)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD808939S1 (en) * 2015-11-11 2018-01-30 Voxx International Corporation Television antenna
USD862426S1 (en) 2016-07-08 2019-10-08 Voxx International Corporation Television antenna
US10541465B2 (en) 2015-11-11 2020-01-21 Voxx International Corporation Omni-directional television antenna with WiFi reception capability

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133632B (en) * 1983-01-10 1987-11-25 Cedomir Djokic Tv ariel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1291657A (fr) * 1961-03-15 1962-04-27 Sud Aviation Perfectionnements apportés aux antennes à fente et les applications de telles antennes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD808939S1 (en) * 2015-11-11 2018-01-30 Voxx International Corporation Television antenna
USD809491S1 (en) * 2015-11-11 2018-02-06 Voxx International Corporation Television antenna
US10541465B2 (en) 2015-11-11 2020-01-21 Voxx International Corporation Omni-directional television antenna with WiFi reception capability
USD862426S1 (en) 2016-07-08 2019-10-08 Voxx International Corporation Television antenna
USD1028950S1 (en) 2016-07-08 2024-05-28 Voxx International Corporation Television antenna

Also Published As

Publication number Publication date
SE315640B (enrdf_load_html_response) 1969-10-06
DE1491925B1 (de) 1972-01-20
NO117430B (enrdf_load_html_response) 1969-08-11
GB1076233A (en) 1967-07-19

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Legal Events

Date Code Title Description
AS Assignment

Owner name: LIQUID CRYSTAL TECHNOLOGY, INC.,

Free format text: SECURITY INTEREST;ASSIGNOR:DAVIS, FREDERICK;REEL/FRAME:003904/0399

Effective date: 19810723

Owner name: BAYBANK MIDDLESEX, SEVEN NEW ENGLAND EXECUTIVE PAR

Free format text: LICENSE;ASSIGNOR:CHU ASSOCIATES, INC. A CORP. OF MA;REEL/FRAME:003917/0324

Effective date: 19810724