GB311449A - Improvements in or relating to aerial systems - Google Patents

Improvements in or relating to aerial systems

Info

Publication number
GB311449A
GB311449A GB438828A GB438828A GB311449A GB 311449 A GB311449 A GB 311449A GB 438828 A GB438828 A GB 438828A GB 438828 A GB438828 A GB 438828A GB 311449 A GB311449 A GB 311449A
Authority
GB
United Kingdom
Prior art keywords
aerials
frequencies
conductor
radiation
series
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
GB438828A
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 GB438828A priority Critical patent/GB311449A/en
Priority to DEM108549D priority patent/DE499441C/en
Publication of GB311449A publication Critical patent/GB311449A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/22—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of a single substantially straight conductive element

Landscapes

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

Abstract

311,449. Franklin, C. S. Feb. 11, 1928. Aerials; directive signalling. - For directive transmission or reception of energy embracing a narrow band of frequencies as distinct from a definite wave-length, a plurality of multi-conductor aerial or reflector units are used each characterized by having a ratio of inductance to radiation-resistance less than that of a single conductor. In Figs. 2 and 3, a series of aerials A of the kind described in Specification 242,342 are backed by grids or cages R, R1 forming reflector units having the above-mentioned characterstic. Each unit may be insulated from the one above or below, or they may be connected in series through non-radiating induction coils. Such reflectors cut off back-radiation for a given wavelength, and also function efficiently over a band of frequencies. Similar multi-conductor units may also be used for aerials A so that they will accept energy from the feeders over a wider range of frequencies within specified limits, than a similar aerial array made up of single wire elements. Specification 281,762 also is referred to.
GB438828A 1928-02-11 1928-02-11 Improvements in or relating to aerial systems Expired GB311449A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB438828A GB311449A (en) 1928-02-11 1928-02-11 Improvements in or relating to aerial systems
DEM108549D DE499441C (en) 1928-02-11 1929-02-02 Antenna with reflector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB438828A GB311449A (en) 1928-02-11 1928-02-11 Improvements in or relating to aerial systems

Publications (1)

Publication Number Publication Date
GB311449A true GB311449A (en) 1929-05-13

Family

ID=9776219

Family Applications (1)

Application Number Title Priority Date Filing Date
GB438828A Expired GB311449A (en) 1928-02-11 1928-02-11 Improvements in or relating to aerial systems

Country Status (2)

Country Link
DE (1) DE499441C (en)
GB (1) GB311449A (en)

Also Published As

Publication number Publication date
DE499441C (en) 1930-06-06

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