JPS5749868A - Signal detector - Google Patents

Signal detector

Info

Publication number
JPS5749868A
JPS5749868A JP55125261A JP12526180A JPS5749868A JP S5749868 A JPS5749868 A JP S5749868A JP 55125261 A JP55125261 A JP 55125261A JP 12526180 A JP12526180 A JP 12526180A JP S5749868 A JPS5749868 A JP S5749868A
Authority
JP
Japan
Prior art keywords
frequency
output
sampling
step wave
level
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.)
Pending
Application number
JP55125261A
Other languages
Japanese (ja)
Inventor
Toshio Asai
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP55125261A priority Critical patent/JPS5749868A/en
Publication of JPS5749868A publication Critical patent/JPS5749868A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis
    • G01R23/173—Wobbulating devices similar to swept panoramic receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE:To enable efficient detecting of even a single component existing in a region of other frequency than a sampling frequency, by a method wherein an integration circuit is connected between a step wave voltage generator and a voltage control oscillator. CONSTITUTION:A step wave output a of a step wave voltage generator is applied to a voltage control type oscillator via an integration circuit 8, and a high-frequency signal, applied to an input terminal 1, is mixed with the output of the oscillator 7 by means of a mixer 2 for the application of it to a decoder 4 via an amplifier 3. A signal level, having a component corresponding to a frequency at an initial rising of each step wave, appears at an output of a sample hold 5 to which a sampling pulse c from a differential circuit 10 is applied. Meanwhile, a comparator 11 sends a sampling signal d when an input level is larger than the output level of the hold circuit 5, and a maximum signal level among sampling frequencies is extracted from an output terminal 6. This permits the efficient detection of a frequency component extending over even a full region of frequency among the sampling frequencies in addition to the sampling frequencies.
JP55125261A 1980-09-11 1980-09-11 Signal detector Pending JPS5749868A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55125261A JPS5749868A (en) 1980-09-11 1980-09-11 Signal detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55125261A JPS5749868A (en) 1980-09-11 1980-09-11 Signal detector

Publications (1)

Publication Number Publication Date
JPS5749868A true JPS5749868A (en) 1982-03-24

Family

ID=14905701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55125261A Pending JPS5749868A (en) 1980-09-11 1980-09-11 Signal detector

Country Status (1)

Country Link
JP (1) JPS5749868A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596334U (en) * 1982-06-30 1984-01-17 三菱電機株式会社 Peak hold circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596334U (en) * 1982-06-30 1984-01-17 三菱電機株式会社 Peak hold circuit

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