GB751980A - Improvements in and relating to non-linear amplifier-detector circuits - Google Patents

Improvements in and relating to non-linear amplifier-detector circuits

Info

Publication number
GB751980A
GB751980A GB3915/54A GB391554A GB751980A GB 751980 A GB751980 A GB 751980A GB 3915/54 A GB3915/54 A GB 3915/54A GB 391554 A GB391554 A GB 391554A GB 751980 A GB751980 A GB 751980A
Authority
GB
United Kingdom
Prior art keywords
amplifier
give
tube
curve
grid
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
GB3915/54A
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.)
Space Systems Loral LLC
Original Assignee
Philco Ford Corp
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 claimed from GB31445/39A external-priority patent/GB585908A/en
Application filed by Philco Ford Corp filed Critical Philco Ford Corp
Publication of GB751980A publication Critical patent/GB751980A/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
    • H04B1/26—Circuits for superheterodyne receivers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/288—Coherent receivers
    • 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
    • G06G7/24—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating logarithmic or exponential functions, e.g. hyperbolic functions

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

751,980. Non-linear circuits. PHILCO CORPORATION. Feb. 10, 1954 [Feb. 11, 1953], No. 3915/54. Class 40 (6). In an amplitude detector circuit for producing an output signal which changes rapidly for relatively small changes in the amplitude of the input, a number of amplifier stages are connected in cascade and detectors are associated with two or more stages, the outputs from the detectors being combined in such a manner that one output tends to cancel another. An I.F. amplifier, Fig. 2, comprises five stages 40, 48, 54, 62 and 56 with grid and cathode resistorcapacitor circuits 46, 52, 58, 64 and 60 to give alternate grid and cathode detection when driven beyond the operating range of the associated valve. The outputs from these circuits are fed over decoupling resistors 70 to a delay line correctly terminated by resistors 72, 72, 74 and of a length equal to the transit time of the signals through the amplifier. As the input is increased from zero, Fig. 3, tube 56 saturates and operates as a grid detector to give the curve 28<SP>1</SP> which levels off when tube 62 saturates. Tube 62 then operates as a cathode detector to give curve 26<SP>11</SP> which, when added to curve 28<SP>1</SP> give the effective curve 26<SP>1</SP>. This is terminated by tube 54 saturating, the process continuing until tube 40 is saturated and operates as a grid detector. A pulse 80 applied to the I.F. amplifier results in a video pulse 90 whereas a larger pulse 81 may produce a smaller pulse 91. In a radar receiver where the modulation is important, the I.F. amplifier is able to handle a large range of input and give a small range of output of modulation voltage. If the graph has a curved portion 34 sharp cut-off limiters may be interposed between the amplifier stages. U.S.A. Specification 2,662,978 is referred to.
GB3915/54A 1939-12-04 1954-02-10 Improvements in and relating to non-linear amplifier-detector circuits Expired GB751980A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB31445/39A GB585908A (en) 1953-02-11 1939-12-04 Improvements in or relating to methods of and apparatus for modifying recurrent signals and applications thereof
US751980XA 1953-02-11 1953-02-11

Publications (1)

Publication Number Publication Date
GB751980A true GB751980A (en) 1956-07-04

Family

ID=32178913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3915/54A Expired GB751980A (en) 1939-12-04 1954-02-10 Improvements in and relating to non-linear amplifier-detector circuits

Country Status (2)

Country Link
US (1) US2433681A (en)
GB (1) GB751980A (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684478A (en) * 1943-06-24 1954-07-20 Us Seerctary Of War Frequency control for pulsed generators
US2836810A (en) * 1945-07-10 1958-05-27 Jr Edward F Macnichol Range unit
GB608739A (en) * 1945-12-21 1948-09-20 Ferranti Ltd Improvements relating to super-regenerative radio receivers of the type associated with transmitting means
US2804612A (en) * 1946-02-01 1957-08-27 Rogers Job Robert Automatic range tracking circuit
US2790168A (en) * 1946-02-04 1957-04-23 Clarence M Connelly Signal generator
US2654881A (en) * 1946-02-20 1953-10-06 La Verne R Philpott Echo ranging system
US2788520A (en) * 1946-04-11 1957-04-09 David L Arenberg Tuning assembly for a radar system
US2652636A (en) * 1946-05-24 1953-09-22 Raymond L Garman Radio echo training system
US2631277A (en) * 1947-09-02 1953-03-10 Hughes Tool Co Flight hazard warning system
US3024441A (en) * 1948-03-25 1962-03-06 Harold L Saxton Sector scan indicator
US2700156A (en) * 1948-06-24 1955-01-18 Philco Corp Variable duration pulse radar system
US2655651A (en) * 1949-03-30 1953-10-13 Rca Corp Zero check or calibrating system for pulse altimeters
US2687520A (en) * 1950-03-28 1954-08-24 Us Army Radar range measuring system
US2978698A (en) * 1950-07-27 1961-04-04 Mortimer A Schultz Radar target tracking system
US3110024A (en) * 1950-07-27 1963-11-05 Jennings Burridge Velocity-locking system
US2656531A (en) * 1950-09-12 1953-10-20 Atlas David Device to permit radar contour mapping of rain intensity in rainstorms
US2942256A (en) * 1955-05-16 1960-06-21 Rca Corp Radar calibration system
US2924819A (en) * 1955-08-29 1960-02-09 Gilfillan Bros Inc Apparatus for drift compensation in aircraft guidance systems
US2984017A (en) * 1956-05-18 1961-05-16 Solartron Electronic Group Apparatus for assisting an operator in performing a skill
US3066278A (en) * 1956-05-25 1962-11-27 Jr Louis R Padberg Short pulse keying attachment
US2939135A (en) * 1956-10-08 1960-05-31 Collins Radio Co Aircraft proximity warning system with incorporated testing system
US3060424A (en) * 1957-08-20 1962-10-23 Gen Electric Signal simulator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2055883A (en) * 1932-01-18 1936-09-29 Rca Corp Aircraft altimeter
NL86272B (en) * 1936-06-20
GB507754A (en) * 1937-11-16 1939-06-16 William Spencer Percival Improvements in or relating to wireless systems employing pulses

Also Published As

Publication number Publication date
US2433681A (en) 1947-12-30

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