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SE8203551L - WIRELESS RADIO COMMUNICATION - Google Patents

WIRELESS RADIO COMMUNICATION

Info

Publication number
SE8203551L
SE8203551L SE8203551A SE8203551A SE8203551L SE 8203551 L SE8203551 L SE 8203551L SE 8203551 A SE8203551 A SE 8203551A SE 8203551 A SE8203551 A SE 8203551A SE 8203551 L SE8203551 L SE 8203551L
Authority
SE
Sweden
Prior art keywords
coil
coupling
loop
radio communication
wireless radio
Prior art date
Application number
SE8203551A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE433023B (en
Inventor
Sven Ramstrom
Original Assignee
Sven Ramstrom
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 Sven Ramstrom filed Critical Sven Ramstrom
Priority to SE8203551A priority Critical patent/SE433023B/en
Priority to GB08314425A priority patent/GB2125225B/en
Priority to DK259783A priority patent/DK161232C/en
Priority to NO832084A priority patent/NO159566C/en
Publication of SE8203551L publication Critical patent/SE8203551L/en
Publication of SE433023B publication Critical patent/SE433023B/en

Links

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
    • H01Q7/005—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 with variable reactance for tuning the antenna

Landscapes

  • Details Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Support Of Aerials (AREA)
  • Near-Field Transmission Systems (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

A loop antenna for radio communication includes an antenna member in the form of a coil (L2) comprising several turns, a coupling loop (L1) inductively connected to the coil and adapted for turning inside it, a wideband transformer (2) connected between the connecting loop and a transmitter/receiver, a tuning capacitor (9) for coupling in parallel across the coil, and electrically insulating spacers (5, 22) for carrying the coil and coupling loop and for insulating these units from earth. The characteristic features of the invention is a switch 3 for coupling in an optional number of turns of the coil in parallel across the tuning capacitor and an unsymmetrical mounting of the wideband transformer 2 on the coupling loop. <IMAGE>
SE8203551A 1982-06-08 1982-06-08 LOOP ANTENNA FOR RADIO COMMUNICATION SE433023B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE8203551A SE433023B (en) 1982-06-08 1982-06-08 LOOP ANTENNA FOR RADIO COMMUNICATION
GB08314425A GB2125225B (en) 1982-06-08 1983-05-25 A loop antenna for radio communication
DK259783A DK161232C (en) 1982-06-08 1983-06-07 FRAME ANTENNA FOR RADIO COMMUNICATION
NO832084A NO159566C (en) 1982-06-08 1983-06-08 RADIO COMMUNICATION FRAME ANTENNA.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8203551A SE433023B (en) 1982-06-08 1982-06-08 LOOP ANTENNA FOR RADIO COMMUNICATION

Publications (2)

Publication Number Publication Date
SE8203551L true SE8203551L (en) 1983-12-09
SE433023B SE433023B (en) 1984-04-30

Family

ID=20347013

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8203551A SE433023B (en) 1982-06-08 1982-06-08 LOOP ANTENNA FOR RADIO COMMUNICATION

Country Status (4)

Country Link
DK (1) DK161232C (en)
GB (1) GB2125225B (en)
NO (1) NO159566C (en)
SE (1) SE433023B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703278A (en) * 1984-10-09 1987-10-27 Texaco Inc. Well logging disc coil receiving means and method
GB2274547A (en) * 1993-01-21 1994-07-27 David Doroba Antenna tuning arrangement
GB2422959A (en) * 2005-02-07 2006-08-09 Phillip James Forshaw A method of variable tuning for a loop antenna

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB259300A (en) * 1925-07-07 1926-10-07 Igranic Electric Co Ltd Improvements in or relating to frame aerials for use with radio receiving apparatus
GB286354A (en) * 1926-12-01 1928-03-01 Rees Mace Mfg Company Ltd Improvements in or relating to radio wave interceptors
GB957202A (en) * 1960-09-13 1964-05-06 Multitone Electric Company Ltd Improvements in or relating to electric signal receivers

Also Published As

Publication number Publication date
NO832084L (en) 1983-12-09
NO159566B (en) 1988-10-03
DK259783A (en) 1983-12-09
GB2125225B (en) 1985-11-27
SE433023B (en) 1984-04-30
DK161232B (en) 1991-06-10
DK161232C (en) 1991-12-30
DK259783D0 (en) 1983-06-07
GB8314425D0 (en) 1983-06-29
GB2125225A (en) 1984-02-29
NO159566C (en) 1989-01-11

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