GB773548A - Improvements in or relating to resonant coupling circuits - Google Patents

Improvements in or relating to resonant coupling circuits

Info

Publication number
GB773548A
GB773548A GB2835754A GB2835754A GB773548A GB 773548 A GB773548 A GB 773548A GB 2835754 A GB2835754 A GB 2835754A GB 2835754 A GB2835754 A GB 2835754A GB 773548 A GB773548 A GB 773548A
Authority
GB
United Kingdom
Prior art keywords
inductor
circuit
resonant
inductors
impedance
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
GB2835754A
Inventor
Donald Nappin
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB2835754A priority Critical patent/GB773548A/en
Publication of GB773548A publication Critical patent/GB773548A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/22—Circuits for receivers in which no local oscillation is generated
    • H04B1/24—Circuits for receivers in which no local oscillation is generated the receiver comprising at least one semiconductor device having three or more electrodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/191—Tuned amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

773,548. Resonant coupling circuits. GENERAL ELECTRIC CO., Ltd. Sept. 30, 1955 [Oct. 1, 1954], No. 28357/54. Class 40 (8). [Also in Group XL (c)] A resonant coupling circuit comprises a parallel resonant circuit including an inductor 1 and capacitor 2, a second inductor 3 connected across a circuit having a low output impedance, e.g. the aerial circuit 5, 6, 7, and a third inductor 4 connected across a circuit having a low input impedance, e.g. a transistor amplifier stage 9, the arrangement being such that the mutual inductances between the inductor 1 and the inductors 3, 4 are each less than the self-inductance of the inductor 1 whilst the mutual inductance between the inductors 3 and 4 is negligible. Signals close to the resonant frequency are trans. ferred from the aerial to the transistor via the resonant circuit, the selectivity of which is not greatly affected by the low impedance of the output and input circuits. Since inductors 3 and 4 are not directly coupled there is no transfer of frequencies removed from the resonant frequency.
GB2835754A 1954-10-01 1954-10-01 Improvements in or relating to resonant coupling circuits Expired GB773548A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2835754A GB773548A (en) 1954-10-01 1954-10-01 Improvements in or relating to resonant coupling circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2835754A GB773548A (en) 1954-10-01 1954-10-01 Improvements in or relating to resonant coupling circuits

Publications (1)

Publication Number Publication Date
GB773548A true GB773548A (en) 1957-04-24

Family

ID=10274381

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2835754A Expired GB773548A (en) 1954-10-01 1954-10-01 Improvements in or relating to resonant coupling circuits

Country Status (1)

Country Link
GB (1) GB773548A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006027755A1 (en) * 2004-09-10 2006-03-16 Koninklijke Philips Electronics N.V. Tunable cascode lna with flat gain response over a wide frequency range
EP1869761A4 (en) * 2005-04-15 2011-07-20 Zoran Corp An integrated channel filter using multiple resonant filters and method of operation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006027755A1 (en) * 2004-09-10 2006-03-16 Koninklijke Philips Electronics N.V. Tunable cascode lna with flat gain response over a wide frequency range
US7786806B2 (en) 2004-09-10 2010-08-31 Nxp B.V. Tunable cascode LNA with flat gain response over a wide frequency range
EP1869761A4 (en) * 2005-04-15 2011-07-20 Zoran Corp An integrated channel filter using multiple resonant filters and method of operation

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