GB323237A - Improvements in or relating to wireless signalling apparatus - Google Patents

Improvements in or relating to wireless signalling apparatus

Info

Publication number
GB323237A
GB323237A GB2775628A GB2775628A GB323237A GB 323237 A GB323237 A GB 323237A GB 2775628 A GB2775628 A GB 2775628A GB 2775628 A GB2775628 A GB 2775628A GB 323237 A GB323237 A GB 323237A
Authority
GB
United Kingdom
Prior art keywords
wires
road
relating
earthed
receiving aerial
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
GB2775628A
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
Priority to NL31450D priority Critical patent/NL31450C/xx
Application filed by Individual filed Critical Individual
Priority to GB2775628A priority patent/GB323237A/en
Priority to FR681886D priority patent/FR681886A/en
Publication of GB323237A publication Critical patent/GB323237A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

323,237. Marconi, G. Sept. 27, 1928. Local disturbances, eliminating or limiting ; directive signalling; aerials. - A system of screening wires K is erected between a shortwave receiving aerial RA and a source of interfering radiation, such as cars passing along a road RD. The wires K may be rods in tune with the incoming waves, or untuned and longer than one wavelength. They are preferably earthed and may be carried right over the road to form a tunnel-like structure, the individual wires being earthed at both ends. The receiving aerial consists of a plurality of vertical wires A in combination with a plurality of reflector wires R, the system having a horizontal polar curve DC.
GB2775628A 1928-09-27 1928-09-27 Improvements in or relating to wireless signalling apparatus Expired GB323237A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL31450D NL31450C (en) 1928-09-27
GB2775628A GB323237A (en) 1928-09-27 1928-09-27 Improvements in or relating to wireless signalling apparatus
FR681886D FR681886A (en) 1928-09-27 1929-09-17 Improvements to wireless signaling devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2775628A GB323237A (en) 1928-09-27 1928-09-27 Improvements in or relating to wireless signalling apparatus

Publications (1)

Publication Number Publication Date
GB323237A true GB323237A (en) 1929-12-27

Family

ID=10264744

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2775628A Expired GB323237A (en) 1928-09-27 1928-09-27 Improvements in or relating to wireless signalling apparatus

Country Status (3)

Country Link
FR (1) FR681886A (en)
GB (1) GB323237A (en)
NL (1) NL31450C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982249A (en) * 1975-05-30 1976-09-21 Tull Aviation Corporation Microwave radiation method and apparatus with a combined diffraction edge and radiation screen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982249A (en) * 1975-05-30 1976-09-21 Tull Aviation Corporation Microwave radiation method and apparatus with a combined diffraction edge and radiation screen

Also Published As

Publication number Publication date
FR681886A (en) 1930-05-20
NL31450C (en)

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