JPS55126861A - Frequency measuring device - Google Patents

Frequency measuring device

Info

Publication number
JPS55126861A
JPS55126861A JP3530179A JP3530179A JPS55126861A JP S55126861 A JPS55126861 A JP S55126861A JP 3530179 A JP3530179 A JP 3530179A JP 3530179 A JP3530179 A JP 3530179A JP S55126861 A JPS55126861 A JP S55126861A
Authority
JP
Japan
Prior art keywords
frequency
signal
band
frequency signal
sent
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.)
Granted
Application number
JP3530179A
Other languages
Japanese (ja)
Other versions
JPS6148667B2 (en
Inventor
Tadao Tsuji
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 JP3530179A priority Critical patent/JPS55126861A/en
Publication of JPS55126861A publication Critical patent/JPS55126861A/en
Publication of JPS6148667B2 publication Critical patent/JPS6148667B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Superheterodyne Receivers (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)

Abstract

PURPOSE: To make it possible to measure the frequency of a signal only within a band, by detecting only the needed signal by discriminating and removing spurious and image signals.
CONSTITUTION: A high-frequency signal inputted to high-frequency signal input terminal 200 is sent to mixers 203 and 208 by way of band-pass filter 201 and voltage distributor 202 and then converted into an intermediate-frequency signal. Through amplifiers 205 and 209, the intermediate-frequency signal is sent to (n)- channel branching filters 206 and 211 and branched to (n)-channels. To respective outputs of coincidence detection circuits 213-1W213-n, signals are transferred only when a signal resides in the objective high-frequency band, and frequency display unit 214 provides frequency measurement display.
COPYRIGHT: (C)1980,JPO&Japio
JP3530179A 1979-03-26 1979-03-26 Frequency measuring device Granted JPS55126861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3530179A JPS55126861A (en) 1979-03-26 1979-03-26 Frequency measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3530179A JPS55126861A (en) 1979-03-26 1979-03-26 Frequency measuring device

Publications (2)

Publication Number Publication Date
JPS55126861A true JPS55126861A (en) 1980-10-01
JPS6148667B2 JPS6148667B2 (en) 1986-10-25

Family

ID=12437945

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3530179A Granted JPS55126861A (en) 1979-03-26 1979-03-26 Frequency measuring device

Country Status (1)

Country Link
JP (1) JPS55126861A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007309708A (en) * 2006-05-17 2007-11-29 Advantest Corp Instrument for measuring frequency components
JP2008519960A (en) * 2004-11-10 2008-06-12 株式会社アドバンテスト Distinguishing actual and image lines in frequency converters for spectrum analyzers.
JP2015175717A (en) * 2014-03-14 2015-10-05 三菱電機株式会社 Frequency measuring device, frequency measuring method, and program

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008519960A (en) * 2004-11-10 2008-06-12 株式会社アドバンテスト Distinguishing actual and image lines in frequency converters for spectrum analyzers.
JP2007309708A (en) * 2006-05-17 2007-11-29 Advantest Corp Instrument for measuring frequency components
JP2015175717A (en) * 2014-03-14 2015-10-05 三菱電機株式会社 Frequency measuring device, frequency measuring method, and program

Also Published As

Publication number Publication date
JPS6148667B2 (en) 1986-10-25

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