US1920156A - Antenna for short and ultra-short waves - Google Patents

Antenna for short and ultra-short waves Download PDF

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Publication number
US1920156A
US1920156A US462487A US46248730A US1920156A US 1920156 A US1920156 A US 1920156A US 462487 A US462487 A US 462487A US 46248730 A US46248730 A US 46248730A US 1920156 A US1920156 A US 1920156A
Authority
US
United States
Prior art keywords
short
waves
antenna
ultra
wave
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 - Lifetime
Application number
US462487A
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English (en)
Inventor
Hahnemann Walter
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of US1920156A publication Critical patent/US1920156A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Definitions

  • the dimensions of the frame or loop of such an antenna arrangement must be so chosen, that the side length is very small in comparison with the wave length, amounting to a maximum of one-tenth of the wave-length.
  • the distance of the frame from the earth potential must be as large as possible, but at least one-half of the wave-length.
  • the frame R is connected by way of a supply lead V of energy with the high frequency initial circuit of the apparatus G.
  • the side length of the frame is to be one-tenth of the wave-length at the most, while the distance a amounts to at least one-half of the wave-length. This unusually great distance must be chosen, so that the capacity between the frame and the apparatus, which obviously must be con.-
  • the supply line for the energy is, in order to ensure a symmetry of the conditions, designed particularly as concentric conductor surrounded by a hollow conductor, or in the form of two conductors arranged within a metal hose or the like.
  • An antenna arrangement for directive I Lin oeived and an antenna lead comprising two conductors arranged Within a conducting shield and adapted to efl'ect a connection between the loop and an apparatus connected to earth potential, said lead having an effective vertical length of not less than half the length of the Wave tofbe received.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
US462487A 1929-10-30 1930-06-20 Antenna for short and ultra-short waves Expired - Lifetime US1920156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1920156X 1929-10-30

Publications (1)

Publication Number Publication Date
US1920156A true US1920156A (en) 1933-07-25

Family

ID=7749378

Family Applications (1)

Application Number Title Priority Date Filing Date
US462487A Expired - Lifetime US1920156A (en) 1929-10-30 1930-06-20 Antenna for short and ultra-short waves

Country Status (4)

Country Link
US (1) US1920156A (de)
AT (1) AT127982B (de)
FR (1) FR696056A (de)
GB (1) GB347503A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468143A (en) * 1944-11-03 1949-04-26 Marguerite P Van Camp Probe for detecting and locating sources of electromagnetic energy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468143A (en) * 1944-11-03 1949-04-26 Marguerite P Van Camp Probe for detecting and locating sources of electromagnetic energy

Also Published As

Publication number Publication date
GB347503A (en) 1931-04-30
FR696056A (fr) 1930-12-26
AT127982B (de) 1932-04-25

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