GB628986A - Improvements in or relating to aerials - Google Patents

Improvements in or relating to aerials

Info

Publication number
GB628986A
GB628986A GB2918246A GB2918246A GB628986A GB 628986 A GB628986 A GB 628986A GB 2918246 A GB2918246 A GB 2918246A GB 2918246 A GB2918246 A GB 2918246A GB 628986 A GB628986 A GB 628986A
Authority
GB
United Kingdom
Prior art keywords
aerial
loading
band
frequency band
frequency
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
GB2918246A
Original Assignee
Edward Cecil Cork
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 Edward Cecil Cork filed Critical Edward Cecil Cork
Priority to GB268705X priority Critical
Publication of GB628986A publication Critical patent/GB628986A/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
    • H01Q21/08Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • H01Q21/10Collinear arrangements of substantially straight elongated conductive units

Abstract

628,986. Aerials. CORK, E. C. Oct. 1, 1946, No. 29182. [Class 40 (vii)] An aerial coupled to energizing or receiving apparatus capable of operating over a wide frequency band comprises a series capacity loaded conductor, the loading being at intervals of less than a quarter wavelength and causing it to function over the frequency band substantially as a half or quarter-wave resonator with substantially uniform efficiency. A wide frequency band consists of a band of a width 8 per cent or more of its mean frequency and the efficiency should be such that nowhere in the band the reflection co-efficient exceeds 10 per cent. A capacity loaded dipole, Fig. 1, may have the loading elements either equal or unequal in magnitude and distribution. Preferably, the loading is non-uniform to cause more current to flow in the extremities of the aerial whose physical length may be of the order of 4 freespace wavelengths. Because of the more extended current distribution the aerial has a greater directivity than a normal dipole and it is stated that the lobes of the polar diagram may show a tendency to split. By inclining the arms 10 and 11 as shown, this tendency may be overcome although the radiation within the V then exceeds that in the opposite direction. Another embodiment, Fig. 2 (not shown), is formed of a plurality of insulated but overlapping tubular conductive elements which form a capacitively loaded aerial electrically similar to that of Fig. 1. A feeder may be connected either at the adjacent ends 13, 14, or to the extreme ends and the invention is also applicable to unipoles. To provide a D.C. or low-frequency de-icing current path the capacities may be shunted by a high radio frequency impedance line or coil. Specification 586,578 is referred to.
GB2918246A 1946-10-01 1946-10-01 Improvements in or relating to aerials Expired GB628986A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB268705X 1946-10-01

Publications (1)

Publication Number Publication Date
GB628986A true GB628986A (en) 1949-09-08

Family

ID=10250507

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2918246A Expired GB628986A (en) 1946-10-01 1946-10-01 Improvements in or relating to aerials

Country Status (5)

Country Link
US (1) US2715184A (en)
CH (1) CH268705A (en)
DE (1) DE833064C (en)
FR (1) FR953486A (en)
GB (1) GB628986A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2712602A (en) * 1950-05-03 1955-07-05 Ericsson Telefon Ab L M Reflection-free antenna
US2924823A (en) * 1954-12-08 1960-02-09 Emi Ltd Separate adjacent antennas for different bands with means to reduce cross coupling
US2967300A (en) * 1957-11-22 1961-01-03 L A Young Spring & Wire Corp Multiple band antenna
US3064257A (en) * 1958-02-14 1962-11-13 James D Guest Antenna with adjustable tuning reactance
GB2148605A (en) * 1983-10-18 1985-05-30 Plessey Co Plc Whip aerial
GB2148604A (en) * 1983-10-18 1985-05-30 Plessey Co Plc Monopole aerial
GB2171258A (en) * 1985-02-19 1986-08-20 Plessey Co Plc Aerials

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975023C (en) * 1952-07-24 1961-07-06 Heinz Dr Phil Graziadei Broadband directional antenna with a conductive surface of variable width
DE957855C (en) * 1954-06-18 1900-01-01
US3159839A (en) * 1955-07-07 1964-12-01 Donald L Hings Driven dipole coupled to a colinear array spaced with respect to the first fresnel zone
US3530474A (en) * 1968-07-02 1970-09-22 Us Army Antenna with adjustable-ratio dual capacitive loading
GB1524210A (en) * 1975-12-31 1978-09-06 Marconi Co Ltd Radio antennae
GB1547136A (en) * 1978-02-07 1979-06-06 Marconi Co Ltd Radio antennae
SE432035B (en) * 1982-07-28 1984-03-12 Philips Svenska Ab RIGHT ANTENAL ELEMENT OF TYPE V-SHIPPED DIPOL

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1839426A (en) * 1924-07-25 1932-01-05 Drahtlose Telegraphie Gmbh Antenna
US1790646A (en) * 1925-05-09 1931-02-03 alex anderson
US1935373A (en) * 1929-03-29 1933-11-14 Rca Corp Antenna
US2208749A (en) * 1937-02-09 1940-07-23 Emi Ltd Aerial system
US2258406A (en) * 1938-04-16 1941-10-07 Rca Corp Wide band antenna
BE441497A (en) * 1939-08-03
US2272608A (en) * 1939-12-19 1942-02-10 Internat Telephone Dev Co Inc Antenna matching structure
US2352977A (en) * 1942-09-18 1944-07-04 Gen Electric Self-compensating video antenna
US2409542A (en) * 1942-11-20 1946-10-15 Rca Corp High-frequency transducer system
US2419552A (en) * 1943-06-12 1947-04-29 Standard Telephones Cables Ltd Radio antenna
BE460255A (en) * 1944-05-02

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2712602A (en) * 1950-05-03 1955-07-05 Ericsson Telefon Ab L M Reflection-free antenna
US2924823A (en) * 1954-12-08 1960-02-09 Emi Ltd Separate adjacent antennas for different bands with means to reduce cross coupling
US2967300A (en) * 1957-11-22 1961-01-03 L A Young Spring & Wire Corp Multiple band antenna
US3064257A (en) * 1958-02-14 1962-11-13 James D Guest Antenna with adjustable tuning reactance
GB2148605A (en) * 1983-10-18 1985-05-30 Plessey Co Plc Whip aerial
GB2148604A (en) * 1983-10-18 1985-05-30 Plessey Co Plc Monopole aerial
GB2171258A (en) * 1985-02-19 1986-08-20 Plessey Co Plc Aerials

Also Published As

Publication number Publication date
DE833064C (en) 1952-03-03
US2715184A (en) 1955-08-09
FR953486A (en) 1949-12-07
CH268705A (en) 1950-05-31

Similar Documents

Publication Publication Date Title
GB927051A (en) Improvements in or relating to antennas for high frequencies
US2283914A (en) Antenna
GB628986A (en) Improvements in or relating to aerials
US2455403A (en) Antenna
US3582951A (en) Helmet antenna
US3653056A (en) Combined vhf-uhf dipole antenna array
US2935747A (en) Broadband antenna system
GB580569A (en) Improvements in aerial systems
US2975423A (en) Antenna director
US3543277A (en) Reduced size broadband antenna
US2821708A (en) Coupling connection for slot antenna
US2691730A (en) Wide band antenna
US3241148A (en) End loaded planar spiral antenna
US2769169A (en) Dipole impedance matching device
US3114913A (en) Wing type dipole antenna with u-shaped director
GB654935A (en) Improvements in and relating to high frequency antennae
US2714659A (en) Broad band unidirectional antenna
US2886813A (en) Directional antenna
US2524993A (en) Antenna
US2508438A (en) Broad band antenna
US2683808A (en) Broad band antenna
US2485482A (en) Broad band antenna
US2646505A (en) Broad band bidirectional antenna
GB647198A (en) Improvements in and relating to antennae
US2932026A (en) Antenna