GB1434475A - Directional antenna - Google Patents

Directional antenna

Info

Publication number
GB1434475A
GB1434475A GB1951474A GB1951474A GB1434475A GB 1434475 A GB1434475 A GB 1434475A GB 1951474 A GB1951474 A GB 1951474A GB 1951474 A GB1951474 A GB 1951474A GB 1434475 A GB1434475 A GB 1434475A
Authority
GB
United Kingdom
Prior art keywords
radiators
aerial
points
dipoles
resistive load
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
GB1951474A
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
Publication of GB1434475A publication Critical patent/GB1434475A/en
Expired 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
    • H01Q9/44—Resonant antennas with a plurality of divergent straight elements, e.g. V-dipole, X-antenna; with a plurality of elements having mutually inclined substantially straight portions
    • 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
    • H01Q11/06—Rhombic antennas; V-antennas
    • 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
    • H01Q9/06—Details
    • H01Q9/065—Microstrip dipole antennas

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
  • Waveguide Aerials (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

1434475 Aerials M TACUSSEL 3 May 1974 [21 May 1973] 19514/74 Heading H4A A directional aerial comprises two longitudinally spaced dipole elements 2, 4, Fig. 1, each formed by respective pairs of radiators 6, 6<SP>1</SP> and 8, 8<SP>1</SP> in Vee formation. The apical ends of the radiators 6 and 8 are connected together by a member 10, which is continued to a feed terminal A. Similarly, a member 12 connects the apical ends of the radiators 61 and 8<SP>1</SP> to each other and to a feed terminal B. Points 24, 22 near the outer ends of the radiators 6, 8 are connected together by a resistive load 16, and points 24<SP>1</SP>, 22<SP>1</SP> near the outer ends of the radiators 61, 81 are connected together by a resistive load 16<SP>1</SP>. The length L of each radiator may be between 0À65# and 1À0# (# = wavelength corresponding to mean operating frequency), the vertex angles of the dipoles may be 90 degrees, the spacing D between the dipoles may be from 0À30L to 0À45L, the distance l of the connecting points for the resistive loads from the open ends of the radiators may be from 0À2L to 0À4L, and the values of the resistive loads may be from 400 to 800 ohms. The aerial has a main radiation lobe in the direction 18, and the resistive load arrangement is stated greatly to reduce back lobing. In a second embodiment an additional Vee-shaped dipole is provided which is located between the dipoles 6, 6<SP>1</SP> and 8, 8<SP>1</SP> shown in Fig. 1, and is disposed close to the former. It is connected to the members 10, 12, and to the points 24, 24<SP>1</SP> (Fig. 5, not shown). In a third embodiment, four Vee-shaped dipoles, which are equally spaced apart, have their apical ends connected to common elements from two feed points, and a resistive load is provided between each adjacent pair of radiators (Fig. 6, not shown). The conductive members of an aerial may be rods or tubes, or the whole aerial may be stamped from a metal plate. In a fourth embodiment, the aerial is formed by a printed circuit process, a matching and connection portion 26, Fig. 7, being also provided.
GB1951474A 1973-05-21 1974-05-03 Directional antenna Expired GB1434475A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7318305A FR2231125B1 (en) 1973-05-21 1973-05-21

Publications (1)

Publication Number Publication Date
GB1434475A true GB1434475A (en) 1976-05-05

Family

ID=9119636

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1951474A Expired GB1434475A (en) 1973-05-21 1974-05-03 Directional antenna

Country Status (8)

Country Link
US (1) US3928854A (en)
JP (1) JPS5021655A (en)
CA (1) CA999372A (en)
DE (1) DE2423420C3 (en)
ES (1) ES426919A1 (en)
FR (1) FR2231125B1 (en)
GB (1) GB1434475A (en)
IT (1) IT1014219B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489328A (en) * 1981-06-25 1984-12-18 Trevor Gears Plural microstrip slot antenna
GB2173346A (en) * 1985-04-03 1986-10-08 Singer Co Microstrip circuit temperature compensation
AU586728B2 (en) * 1986-03-06 1989-07-20 Singer Company, The Microstrip antenna bulk load

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS517616U (en) * 1974-07-03 1976-01-20
US4092652A (en) * 1974-07-27 1978-05-30 Canon Kabushiki Kaisha Exposure information indicating device for a camera
JPS5225221A (en) * 1975-08-21 1977-02-25 Meidensha Electric Mfg Co Ltd Detecting system of surge absorption ground fault for stationary high frequency inverter device
JPS5298956A (en) * 1976-02-16 1977-08-19 Toshiba Corp Over-voltage protection device of semi-conductor power convertor
JPS6122466Y2 (en) * 1978-09-20 1986-07-05
US4667204A (en) * 1985-04-08 1987-05-19 Hedrick James D Combination dual rhombic and V-type antenna for VHF-UHF television receivers
DE3539733A1 (en) * 1985-11-08 1987-05-14 Oskar J Kufner A SEND OR RECEIVING ANTENNA, ESPECIALLY FOR THE SHORT AND / OR MEDIUM WAVE AREA
US5528251A (en) * 1995-04-06 1996-06-18 Frein; Harry S. Double tuned dipole antenna
FR2801730B1 (en) * 1999-11-26 2002-01-18 Centre Nat Rech Scient BROADBAND SCISSOR ANTENNA
DE602005010708D1 (en) * 2004-07-20 2008-12-11 Nxp Bv CONFIGURATION OF A MULTIPURPOSE ANTENNA FOR A CONTACTLESS DATA CARRIER

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1935373A (en) * 1929-03-29 1933-11-14 Rca Corp Antenna
US2159646A (en) * 1935-04-30 1939-05-23 Mackay Radio & Telegraph Co Antenna
CH262125A (en) * 1939-08-03 1949-06-15 Standard Telephon & Radio Ag Directional antenna arrangement provided with at least one phase shifter.
GB730398A (en) * 1952-08-22 1955-05-25 Shardlow Electric Wires Ltd Improvements in aerials
US3020550A (en) * 1959-09-28 1962-02-06 Jerrold Electronics Corp Broadband sheet antenna

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489328A (en) * 1981-06-25 1984-12-18 Trevor Gears Plural microstrip slot antenna
GB2173346A (en) * 1985-04-03 1986-10-08 Singer Co Microstrip circuit temperature compensation
GB2173346B (en) * 1985-04-03 1989-07-12 Singer Co Microstrip circuit temperature compensation
AU586728B2 (en) * 1986-03-06 1989-07-20 Singer Company, The Microstrip antenna bulk load

Also Published As

Publication number Publication date
DE2423420C3 (en) 1981-03-26
FR2231125B1 (en) 1977-09-02
DE2423420B2 (en) 1980-07-31
JPS5021655A (en) 1975-03-07
ES426919A1 (en) 1976-07-16
IT1014219B (en) 1977-04-20
FR2231125A1 (en) 1974-12-20
CA999372A (en) 1976-11-02
DE2423420A1 (en) 1974-12-12
US3928854A (en) 1975-12-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee