GB551231A - Improvements in or relating to wireless aerial coupling circuits - Google Patents

Improvements in or relating to wireless aerial coupling circuits

Info

Publication number
GB551231A
GB551231A GB1522241A GB1522241A GB551231A GB 551231 A GB551231 A GB 551231A GB 1522241 A GB1522241 A GB 1522241A GB 1522241 A GB1522241 A GB 1522241A GB 551231 A GB551231 A GB 551231A
Authority
GB
United Kingdom
Prior art keywords
frequency
circuits
becomes
resonance
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
GB1522241A
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 GB1522241A priority Critical patent/GB551231A/en
Publication of GB551231A publication Critical patent/GB551231A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
    • H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers

Landscapes

  • Transmitters (AREA)

Abstract

551,231. Wireless transmitting and receiving apparatus. FLETCHER, H. Nov. 26, 1941, No. 15222. [Classes 40 (iii) and 40 (v)] An electrical tuning system comprises two pretuned circuits designed so that for a frequency other than their common resonance frequency one of the circuits becomes inductively reactive and the other circuit becomes capacitatively reactive, and means are provided whereby the intercoupling of the two circuits can be varied to balance these reactances of different sign to enable the combined circuits to be brought into resonance at any one of a number of frequencies. Fig. 4 shows the invention applied to coupling an aerial 15 to the output 14 of a transmitter 13. An inductance 17 is tuned by a condenser 18 to parallel resonance at the mid-frequency of the desired tuning range. The aerial 15 is tuned by a coil 16 to series resonance at the same frequency. At any other frequency one of the circuits becomes inductive and the other becomes capacitative according as whether the frequency is above or below the mid-frequency. The adjustable tap 19 enables these opposite reactances to be neutralized to tune the combined circuits to any 'desired frequency in the range. The tap 20 is chosen to match the output to the transmitter. The invention is also applicable to the input coupling of a receiver.
GB1522241A 1941-11-26 1941-11-26 Improvements in or relating to wireless aerial coupling circuits Expired GB551231A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1522241A GB551231A (en) 1941-11-26 1941-11-26 Improvements in or relating to wireless aerial coupling circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1522241A GB551231A (en) 1941-11-26 1941-11-26 Improvements in or relating to wireless aerial coupling circuits

Publications (1)

Publication Number Publication Date
GB551231A true GB551231A (en) 1943-02-12

Family

ID=10055199

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1522241A Expired GB551231A (en) 1941-11-26 1941-11-26 Improvements in or relating to wireless aerial coupling circuits

Country Status (1)

Country Link
GB (1) GB551231A (en)

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