GB2051485B - Antenna coupler - Google Patents

Antenna coupler

Info

Publication number
GB2051485B
GB2051485B GB7918737A GB7918737A GB2051485B GB 2051485 B GB2051485 B GB 2051485B GB 7918737 A GB7918737 A GB 7918737A GB 7918737 A GB7918737 A GB 7918737A GB 2051485 B GB2051485 B GB 2051485B
Authority
GB
United Kingdom
Prior art keywords
coil
capacitors
electrical contact
piston rods
turns
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
GB7918737A
Other versions
GB2051485A (en
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.)
Valcom Ltd
Original Assignee
Valcom Ltd
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 CA273,588A priority Critical patent/CA1078474A/en
Application filed by Valcom Ltd filed Critical Valcom Ltd
Priority to GB7918737A priority patent/GB2051485B/en
Publication of GB2051485A publication Critical patent/GB2051485A/en
Application granted granted Critical
Publication of GB2051485B publication Critical patent/GB2051485B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38—Impedance-matching networks

Landscapes

  • Details Of Aerials (AREA)
  • Transmitters (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

A high power, high frequency radio transmitter is connected to an antenna through an adjustable impedance matching device which comprises a helical coil 10 having a number of straight-sided triangular turns 12. Remotely operable, pneumatic cylinders 18 are mounted on each side or segment of the coil turns in electrical contact therewith and have piston rods 22 which can be moved into and out of electrical contact with a respective fixed conductive bus 28a, 28b disposed alongside the coil. Additionally, a number of capacitors can be connected into circuit as required by the similar movement of piston rods into contact with a similar bus, each such piston rod being housed within a pneumatic cylinder electrically connected to a respective one of such capacitors. <IMAGE>
GB7918737A 1977-03-09 1979-05-30 Antenna coupler Expired GB2051485B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA273,588A CA1078474A (en) 1977-03-09 1977-03-09 Antenna coupler
GB7918737A GB2051485B (en) 1977-03-09 1979-05-30 Antenna coupler

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA273,588A CA1078474A (en) 1977-03-09 1977-03-09 Antenna coupler
GB7918737A GB2051485B (en) 1977-03-09 1979-05-30 Antenna coupler

Publications (2)

Publication Number Publication Date
GB2051485A GB2051485A (en) 1981-01-14
GB2051485B true GB2051485B (en) 1983-08-10

Family

ID=49885927

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7918737A Expired GB2051485B (en) 1977-03-09 1979-05-30 Antenna coupler

Country Status (2)

Country Link
CA (1) CA1078474A (en)
GB (1) GB2051485B (en)

Also Published As

Publication number Publication date
GB2051485A (en) 1981-01-14
CA1078474A (en) 1980-05-27

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee