GB545501A - Improvements in high frequency antennae - Google Patents

Improvements in high frequency antennae

Info

Publication number
GB545501A
GB545501A GB16709/40A GB1670940A GB545501A GB 545501 A GB545501 A GB 545501A GB 16709/40 A GB16709/40 A GB 16709/40A GB 1670940 A GB1670940 A GB 1670940A GB 545501 A GB545501 A GB 545501A
Authority
GB
United Kingdom
Prior art keywords
line
radiator
nov
quarter
feed
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
GB16709/40A
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
Application filed by Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB545501A publication Critical patent/GB545501A/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
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/32—Vertical arrangement of element
    • H01Q9/38—Vertical arrangement of element with counterpoise

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Details Of Aerials (AREA)

Abstract

545,501. Aerials; wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 20, 1940, No. 16709. Convention date, Nov. 24, 1939. [Class 40 (v)] The demountable quarter wave aerial arrangement described in Specification 539,858 is modified by omitting the quarter-wave " coupling transformer," the necessary impedance-matching between the low-impedance aerial and a standard 70-ohm feed-line being secured by adjusting about a quarter wave length the effective lengths of the radiator and a supporting concentric line. As shown in Fig. 2, the antenna conductor 9 is adjustably connected at 25 to a supporting concentric line comprising inner and outer tubular conductors 11, 23 with an adjustable " shorting " block 13. The unit is supported by brackets 21 from a mast 7 which also carries the feed-line 15. In a typical instance, the radiator 9 is adjusted to a length of 0.243 and the resonator 11, 23 to 0.119 Four horizontal conductors 17 are arranged, as shown in Fig. 1, to form an effective " earth for the antenna, which may also be provided with a reflector at one side and a " director at the other side (Fig. 6, not shown) for directive working. Reference has been directed by the Comptroller to Specification 541,870.
GB16709/40A 1939-11-24 1940-11-20 Improvements in high frequency antennae Expired GB545501A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US305813A US2275342A (en) 1939-11-24 1939-11-24 High frequency antenna

Publications (1)

Publication Number Publication Date
GB545501A true GB545501A (en) 1942-05-29

Family

ID=23182460

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16709/40A Expired GB545501A (en) 1939-11-24 1940-11-20 Improvements in high frequency antennae

Country Status (2)

Country Link
US (1) US2275342A (en)
GB (1) GB545501A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505768A (en) * 1942-12-28 1950-05-02 George L Haller Radio antenna
US2425585A (en) * 1943-12-13 1947-08-12 Hazeltine Research Inc Wave-signal antenna
US2617884A (en) * 1945-08-24 1952-11-11 Int Standard Electric Corp Coupling arrangement between aerial and transmission line
US2745102A (en) * 1945-12-14 1956-05-08 Norgorden Oscar Antenna
US2493514A (en) * 1945-12-22 1950-01-03 Rca Corp Multiply-resonant stub antenna
US3022507A (en) * 1953-10-29 1962-02-20 Antenna Engineering Lab Multi-frequency antenna
US2941204A (en) * 1955-06-16 1960-06-14 Arnold B Bailey Antenna mount
US2939144A (en) * 1955-10-05 1960-05-31 Stanley J Havnosky Angularly adjustable and axially extendable antenna array
HU182376B (en) * 1981-09-23 1983-12-28 Budapesti Radiotechnikai Gyar Ground-plane aerial

Also Published As

Publication number Publication date
US2275342A (en) 1942-03-03

Similar Documents

Publication Publication Date Title
GB488480A (en) Antenna systems
GB466063A (en) High frequency electromagnetic wave transmission apparatus
GB528817A (en) Improvements in or relating to radio antenna
FI904893A0 (en) Multiband antenna
GB638020A (en) Antenna
GB680512A (en) Antenna assembly
GB545501A (en) Improvements in high frequency antennae
US2234234A (en) Aerial or aerial system
GB464443A (en) Improvements in or relating to aerial systems
GB489775A (en) Improvements in or relating to antenna systems
US2421593A (en) Coaxial half-wave microwave antenna
GB635343A (en) Improvements in radio antennas
US2485457A (en) Antenna system
GB614419A (en) Improvements in radio antennas
GB654142A (en) Improvements in and relating to antennae
US2509253A (en) Vertical antenna array
US2393218A (en) Electric distribution system
US2199635A (en) Ultra high frequency antenna
US2485654A (en) Antenna
GB579778A (en) Improvements relating to radio antennae
GB609542A (en) Improvements in or relating to frequency-changers in superheterodyne receivers for very short waves
US2467962A (en) High-frequency antenna
GB489774A (en) Improvements in or relating to radio antennae
GB1105354A (en) Improvements in radio antennas
GB773297A (en) Suppression of vertically polarized radiation from an omni-directional range antenna system