GB438506A - Improvements in and relating to feeders and the like for electric currents of high frequency - Google Patents

Improvements in and relating to feeders and the like for electric currents of high frequency

Info

Publication number
GB438506A
GB438506A GB5102/34A GB510234A GB438506A GB 438506 A GB438506 A GB 438506A GB 5102/34 A GB5102/34 A GB 5102/34A GB 510234 A GB510234 A GB 510234A GB 438506 A GB438506 A GB 438506A
Authority
GB
United Kingdom
Prior art keywords
sheath
aerials
conductor
auxiliary
quarter
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
GB5102/34A
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
Priority to GB5102/34A priority Critical patent/GB438506A/en
Priority to US6190A priority patent/US2127088A/en
Priority to FR785656D priority patent/FR785656A/en
Priority to DEE46576D priority patent/DE755778C/en
Publication of GB438506A publication Critical patent/GB438506A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
    • H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced lines or devices with unbalanced lines or devices

Landscapes

  • Insulated Conductors (AREA)
  • Waveguides (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

438,506. Wireless signalling; aerials. PERCIVAL, W. S., 6, York Mansions, York Avenue, Hanwell, and WHITE, E. L. C., 32, The Rise, Hillingdon, both in Middlesex. Feb. 15, 1934, Nos. 5102 and 22023. [Class 40 (v)] Relates to high-frequency feeders for shortwave wireless aerials, of the type in which a central conductor is contained within an outer conductor in the form of a sheath, and consists in the provision of auxiliary members designed to increase the impedance of the central wire and sheath in parallel so as to attenuate undesired waves picked up by the outer sheath, such as would cause interference in reception or such as would vitiate a required directional field in transmission. As shown in Fig. 1, auxiliary conductors 11, 12 having a length one-quarter (or an odd multiple thereof), of the undesired wavelength are connected, at or near the two spaced aerials 8 to the outer sheath of the feeder 1, 2, and act as attenuators, absorbers, or rejector circuits. In Fig. 4 the auxiliary conductor takes the form of a bifurcation 16 connected at 17 to the central conductor 2, as shown, the thickened end portion 18 of the latter serving as an impedance transformer. The members may be coupled to the sheath 1 through a capacitive or inductive impedance according as they are made shorter or longer than an odd multiple of one quarter of the undesired wavelength. Specification 414,296 is referred to.
GB5102/34A 1934-02-15 1934-02-15 Improvements in and relating to feeders and the like for electric currents of high frequency Expired GB438506A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB5102/34A GB438506A (en) 1934-02-15 1934-02-15 Improvements in and relating to feeders and the like for electric currents of high frequency
US6190A US2127088A (en) 1934-02-15 1935-02-12 Feeder and the like for electric currents of high frequency
FR785656D FR785656A (en) 1934-02-15 1935-02-14 Improvements to feeders and similar devices for high frequency electric currents
DEE46576D DE755778C (en) 1934-02-15 1935-02-16 Shortwave arrangement for the transition of an asymmetrical high-frequency line into a symmetrical arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5102/34A GB438506A (en) 1934-02-15 1934-02-15 Improvements in and relating to feeders and the like for electric currents of high frequency

Publications (1)

Publication Number Publication Date
GB438506A true GB438506A (en) 1935-11-15

Family

ID=9789767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5102/34A Expired GB438506A (en) 1934-02-15 1934-02-15 Improvements in and relating to feeders and the like for electric currents of high frequency

Country Status (4)

Country Link
US (1) US2127088A (en)
DE (1) DE755778C (en)
FR (1) FR785656A (en)
GB (1) GB438506A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987000974A1 (en) * 1985-07-30 1987-02-12 Larsen Electronics, Inc. Mobile antenna feed system

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419855A (en) * 1939-06-22 1947-04-29 Roosenstein Hans Otto Arrangement adapted to suppress radio frequency currents on conductors
DE760450C (en) * 1941-01-14 1954-01-18 Telefunken Gmbh Conductor loop for short waves
US2597853A (en) * 1945-01-03 1952-05-27 Us Sec War Unbalanced to balanced line transformer
BE463047A (en) * 1945-01-27
US2433183A (en) * 1945-02-27 1947-12-23 Rca Corp Antenna system
US2639328A (en) * 1945-06-23 1953-05-19 Us Sec War Balanced to unbalanced energy transfer circuit
US2535298A (en) * 1948-02-13 1950-12-26 William J Lattin Radio antenna system
US2939130A (en) * 1952-02-29 1960-05-31 Jr Ralph O Robinson Dipole radio sonde
US3086204A (en) * 1959-11-27 1963-04-16 Andrew Alford Island antenna for installation on aircraft
US4359743A (en) * 1979-07-26 1982-11-16 The United States Of America As Represented By The Secretary Of The Army Broadband RF isolator
SE9902629L (en) * 1999-07-08 2000-09-18 Ericsson Telefon Ab L M Balunkrets
US7834816B2 (en) * 2003-07-25 2010-11-16 Sensormatic Electronics Llc Apparatus for and method of using a diversity antenna

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE577958C (en) * 1933-06-08 Telefunken Gmbh Antenna lead
GB382648A (en) * 1931-07-27 1932-10-27 Marconi Wireless Telegraph Co Improvements in or relating to high frequency transmitters and receivers suitable for use in radio signalling
DE568559C (en) * 1931-11-17 1933-01-24 Telefunken Gmbh Device for coupling a high-frequency arrangement which is constructed asymmetrically with respect to the earth potential to a symmetrically constructed arrangement
FR764473A (en) * 1933-01-11 1934-05-22 Csf Improvements to high frequency transmitters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987000974A1 (en) * 1985-07-30 1987-02-12 Larsen Electronics, Inc. Mobile antenna feed system
US4764773A (en) * 1985-07-30 1988-08-16 Larsen Electronics, Inc. Mobile antenna and through-the-glass impedance matched feed system

Also Published As

Publication number Publication date
US2127088A (en) 1938-08-16
DE755778C (en) 1952-12-01
FR785656A (en) 1935-08-16

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