GB623556A - Improvements in or relating to antenna systems - Google Patents

Improvements in or relating to antenna systems

Info

Publication number
GB623556A
GB623556A GB1542846A GB1542846A GB623556A GB 623556 A GB623556 A GB 623556A GB 1542846 A GB1542846 A GB 1542846A GB 1542846 A GB1542846 A GB 1542846A GB 623556 A GB623556 A GB 623556A
Authority
GB
United Kingdom
Prior art keywords
dipoles
dipole
support
line
array
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
GB1542846A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph 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
Priority to US573724A priority Critical patent/US2455403A/en
Application filed by Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB623556A publication Critical patent/GB623556A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/06Arrays of individually energised antenna units similarly polarised and spaced apart

Abstract

623,556. Directive radio systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 21, 1946, No. 15428. Convention date, Jan. 20, 1945. [Class 40 (vii)] In a broad-band directive aerial array comprising two colinear dipoles 1 and 3 spaced by 2/3#, the two dipoles are energized in phase quadrature from a single feed point, whereby the reactance of one dipole at frequencies differing from the resonant frequency is balanced out by the reactance of the other dipole and the array presents a substantially constant resistive impedance over a broad band of frequencies, e.g. a frequency range of 2: 1; a shield 9 is also provided between the dipoles to minimize coupling and the array is backed by a plane or parabolic reflector 5 provided with side members 7. As shown, each dipole, e.g. 1, comprises two cylindrical elements 11 and 13 secured to a tubular support 15 which has a #/4 slot 17 and the dipole is fed by a coaxial line 19 which has its outer conductor connected to the support 15 and its inner conductor extending up within the slotted portion of the support 15 and connected to the junction of the radiator element 11 with the support 15. The two dipoles are energized in phase quadrature by means of a branched coaxial line, the two branches 19 and 21 differing in length by #/4 and being matched to the main line 25 by a cascaded #/4 line transformer 27, 29. The directivity of such a system is unsymmetrical with respect to the normal to the line of the dipoles, Fig. 3 (not shown), and a symmetrical directivity may be obtained by displacing the dipoles 1 and 3 together with their associated reflectors in the direction of the normal, Fig. 4.
GB1542846A 1945-01-20 1946-05-21 Improvements in or relating to antenna systems Expired GB623556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US573724A US2455403A (en) 1945-01-20 1945-01-20 Antenna

Publications (1)

Publication Number Publication Date
GB623556A true GB623556A (en) 1949-05-19

Family

ID=24293136

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1542846A Expired GB623556A (en) 1945-01-20 1946-05-21 Improvements in or relating to antenna systems

Country Status (2)

Country Link
US (1) US2455403A (en)
GB (1) GB623556A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3102323A1 (en) * 1981-01-24 1982-08-12 Schmidt Metalltech DEVICE FOR IMPROVING THE AERIAL DECOUPLING
GB2471012A (en) * 2009-06-09 2010-12-15 Secr Defence Compact ultra wideband antenna and feed arrangement
CN111066202A (en) * 2017-09-08 2020-04-24 株式会社村田制作所 Antenna device supporting dual frequency bands

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2599864A (en) * 1945-06-20 1952-06-10 Robertson-Shersby-Ha Rob Bruce Wave front modifying wave guide system
US2646506A (en) * 1945-07-09 1953-07-21 Us Sec War Electromagnetic waveguide radiator
US2524993A (en) * 1945-09-14 1950-10-10 Victor H Rumsey Antenna
US2480182A (en) * 1945-09-19 1949-08-30 Us Sec War Antenna
US2513498A (en) * 1945-10-11 1950-07-04 Wireless aerial system
US2633531A (en) * 1946-03-29 1953-03-31 Jessie A Nelson Broad band antenna system
US2876448A (en) * 1954-03-30 1959-03-03 Radio Patents Company Multiple decoupled antennae connected to radio by different length feeder for impedance mismatch reduction
FR1160116A (en) * 1956-10-26 1958-07-08 Sadir Carpentier Improvements to directive antennas
US3727554A (en) * 1956-11-15 1973-04-17 Us Navy Split antenna for dual channel fuze
US3273158A (en) * 1961-07-19 1966-09-13 Ling Temco Vought Inc Multi-polarized tracking antenna
US3131394A (en) * 1962-01-22 1964-04-28 Myron S Wheeler Spiral antenna with spiral reflecting cavity
EP0186455A3 (en) * 1984-12-20 1987-11-25 The Marconi Company Limited A dipole array
GB2193379B (en) * 1986-07-24 1990-04-18 Gen Electric Plc An antenna
US5111214A (en) * 1986-10-10 1992-05-05 Hazeltine Corporation Linear array antenna with E-plane backlobe suppressor
US5274391A (en) * 1990-10-25 1993-12-28 Radio Frequency Systems, Inc. Broadband directional antenna having binary feed network with microstrip transmission line
DK168780B1 (en) * 1992-04-15 1994-06-06 Celwave R F A S Antenna system and method of manufacture thereof
SE501714C2 (en) * 1993-09-06 1995-05-02 Ericsson Telefon Ab L M group antenna
US5818397A (en) * 1993-09-10 1998-10-06 Radio Frequency Systems, Inc. Circularly polarized horizontal beamwidth antenna having binary feed network with microstrip transmission line
US6072439A (en) * 1998-01-15 2000-06-06 Andrew Corporation Base station antenna for dual polarization
US6034649A (en) * 1998-10-14 2000-03-07 Andrew Corporation Dual polarized based station antenna
US6285336B1 (en) 1999-11-03 2001-09-04 Andrew Corporation Folded dipole antenna
US6317099B1 (en) * 2000-01-10 2001-11-13 Andrew Corporation Folded dipole antenna
US7525502B2 (en) * 2004-08-20 2009-04-28 Nokia Corporation Isolation between antennas using floating parasitic elements

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE20922E (en) * 1938-11-22 Antenna
US2275646A (en) * 1939-07-18 1942-03-10 Rca Corp Antenna
BE475639A (en) * 1942-12-31

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3102323A1 (en) * 1981-01-24 1982-08-12 Schmidt Metalltech DEVICE FOR IMPROVING THE AERIAL DECOUPLING
GB2471012A (en) * 2009-06-09 2010-12-15 Secr Defence Compact ultra wideband antenna and feed arrangement
GB2471012B (en) * 2009-06-09 2013-02-20 Secr Defence A compact ultra wideband antenna for transmission and reception of radio waves
CN111066202A (en) * 2017-09-08 2020-04-24 株式会社村田制作所 Antenna device supporting dual frequency bands
CN111066202B (en) * 2017-09-08 2021-05-28 株式会社村田制作所 Antenna device supporting dual frequency bands

Also Published As

Publication number Publication date
US2455403A (en) 1948-12-07

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