GB1045500A - Improvements in or relating to phase reversible amplifiers - Google Patents

Improvements in or relating to phase reversible amplifiers

Info

Publication number
GB1045500A
GB1045500A GB5020563A GB5020563A GB1045500A GB 1045500 A GB1045500 A GB 1045500A GB 5020563 A GB5020563 A GB 5020563A GB 5020563 A GB5020563 A GB 5020563A GB 1045500 A GB1045500 A GB 1045500A
Authority
GB
United Kingdom
Prior art keywords
input
output
sin
square wave
collector circuit
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
GB5020563A
Inventor
Brian Eric Grant
Gerald Adrian Kimber
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.)
SECR AVIATION
Minister of Aviation
Original Assignee
SECR AVIATION
Minister of Aviation
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 SECR AVIATION, Minister of Aviation filed Critical SECR AVIATION
Priority to GB5020563A priority Critical patent/GB1045500A/en
Publication of GB1045500A publication Critical patent/GB1045500A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
    • G06G7/163—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division using a variable impedance controlled by one of the input signals, variable amplification or transfer function
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
    • H03F3/10—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only with diodes
    • H03F3/12—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only with diodes with Esaki diodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Amplifiers (AREA)

Abstract

1,045,500. Balanced modulators; telegraphy; transistor amplifiers. MINISTER OF AVIATION. Dec. 17, 1964 [Dec. 19, 19631, No. 50205/63. Headings H3R. H3T and H4P. [Also in Division G1] A tunnel diode D is connected in a forwardly conducting sense in the emitter or collector circuit of a transistor Q and so biased that when a square wave is applied from a source W to the base, the tunnel diode forward bias is shifted between a positive and a negative resistance operating point thereof, so that an input A.C. signal I applied to the transistor base is phase reversed or not, in the collector circuit output, and without change of amplitude, according to the square wave polarity. If w 1 , w 2 are the angular frequencies of the A.C. and square wave respectively, and Y the A.C. input amplitude, the output is The A.C. input I may include a low pass filter ganged with the switching wave generator W, to exclude from the A.C. input any frequencies greater than that of the generator, and thus avoid low frequency beats between them and the w 2 harmonics. If now, the collector circuit includes a very low pass filter (which produces an output only when w 1 , w 2 . are substantially equal), then the product of Y.sin w 1 t with the w 2 harmonics is eliminated from the output, and only the product Y.sin w 1 t.sin w 2 t derived. This signal may be passed to an integrator, the output of which may be used to plot the frequency spectrum of the input I over a range of frequencies determined by varying the switching frequency w 2 .
GB5020563A 1963-12-19 1963-12-19 Improvements in or relating to phase reversible amplifiers Expired GB1045500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5020563A GB1045500A (en) 1963-12-19 1963-12-19 Improvements in or relating to phase reversible amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5020563A GB1045500A (en) 1963-12-19 1963-12-19 Improvements in or relating to phase reversible amplifiers

Publications (1)

Publication Number Publication Date
GB1045500A true GB1045500A (en) 1966-10-12

Family

ID=10455065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5020563A Expired GB1045500A (en) 1963-12-19 1963-12-19 Improvements in or relating to phase reversible amplifiers

Country Status (1)

Country Link
GB (1) GB1045500A (en)

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