GB625977A - Improvements relating to automatic frequency control of radio frequency oscillators - Google Patents

Improvements relating to automatic frequency control of radio frequency oscillators

Info

Publication number
GB625977A
GB625977A GB2050346A GB2050346A GB625977A GB 625977 A GB625977 A GB 625977A GB 2050346 A GB2050346 A GB 2050346A GB 2050346 A GB2050346 A GB 2050346A GB 625977 A GB625977 A GB 625977A
Authority
GB
United Kingdom
Prior art keywords
improvements relating
frequency
radio frequency
oscillators
automatic
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
GB2050346A
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co 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
Application filed by Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB2050346A priority Critical patent/GB625977A/en
Publication of GB625977A publication Critical patent/GB625977A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
    • H03J7/22—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element in which an automatic frequency control circuit is brought into action after the scanning action has been stopped

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

625,977. Automatic tuning correction. WILLIAMS, R. STUART-, SHAND, G., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. July 9, 1946, Nos. 20503/46 and 265/47. [Class 40 (v)] A superheterodyne receiver for pulse signals includes a sweep oscillator for tuning it continuously over a frequency band and also means for applying a rectified signal output of amplitude proportional to the input signal frequency to the sweep oscillator, in such a manner as to produce a control voltage holding the local oscillator frequency at the optimum value for reception.
GB2050346A 1946-07-09 1946-07-09 Improvements relating to automatic frequency control of radio frequency oscillators Expired GB625977A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2050346A GB625977A (en) 1946-07-09 1946-07-09 Improvements relating to automatic frequency control of radio frequency oscillators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2050346A GB625977A (en) 1946-07-09 1946-07-09 Improvements relating to automatic frequency control of radio frequency oscillators

Publications (1)

Publication Number Publication Date
GB625977A true GB625977A (en) 1949-07-07

Family

ID=10146964

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2050346A Expired GB625977A (en) 1946-07-09 1946-07-09 Improvements relating to automatic frequency control of radio frequency oscillators

Country Status (1)

Country Link
GB (1) GB625977A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020691B (en) * 1956-09-15 1957-12-12 Rohde & Schwarz Frequency control in receivers for frequency shift keyed broadcasts
DE1076200B (en) * 1957-09-13 1960-02-25 Telefunken Gmbh Device for automatic re-tuning of the oscillator of a high-frequency overlay receiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020691B (en) * 1956-09-15 1957-12-12 Rohde & Schwarz Frequency control in receivers for frequency shift keyed broadcasts
DE1076200B (en) * 1957-09-13 1960-02-25 Telefunken Gmbh Device for automatic re-tuning of the oscillator of a high-frequency overlay receiver

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