JPS54143274A - Frequency analyzer - Google Patents

Frequency analyzer

Info

Publication number
JPS54143274A
JPS54143274A JP5141378A JP5141378A JPS54143274A JP S54143274 A JPS54143274 A JP S54143274A JP 5141378 A JP5141378 A JP 5141378A JP 5141378 A JP5141378 A JP 5141378A JP S54143274 A JPS54143274 A JP S54143274A
Authority
JP
Japan
Prior art keywords
signals
frequency
output
phase
supplied
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
JP5141378A
Other languages
Japanese (ja)
Inventor
Masami Tajima
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP5141378A priority Critical patent/JPS54143274A/en
Publication of JPS54143274A publication Critical patent/JPS54143274A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To measure the frequency of input signal precisely and stably, by processing the output signal of a frequency discriminator, in a radar system or the like.
CONSTITUTION: When an input signal is supplied into a phase detector 2 and a delay line 4 through a distributor 2, two signals having a phase difference are inputted into the detector 3, which then produces output signals differing in phase by π/2 each other. These output signals are supplied into differential amplifiers 8 to 12 of a logic operation unit 7 to be processed. As a result, logic signals A to D are obtained at output terminals 13 to 16 respectively of the operation unit 7. From these signal levels, the frequency ranges R1 to R8 of the input signals may be measured.
COPYRIGHT: (C)1979,JPO&Japio
JP5141378A 1978-04-28 1978-04-28 Frequency analyzer Pending JPS54143274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5141378A JPS54143274A (en) 1978-04-28 1978-04-28 Frequency analyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5141378A JPS54143274A (en) 1978-04-28 1978-04-28 Frequency analyzer

Publications (1)

Publication Number Publication Date
JPS54143274A true JPS54143274A (en) 1979-11-08

Family

ID=12886232

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5141378A Pending JPS54143274A (en) 1978-04-28 1978-04-28 Frequency analyzer

Country Status (1)

Country Link
JP (1) JPS54143274A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57204464A (en) * 1981-06-11 1982-12-15 Mitsubishi Electric Corp Digital output frequency measuring receiver
JPS57207869A (en) * 1981-06-17 1982-12-20 Mitsubishi Electric Corp Digitizing instantaneous frequency measuring device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57204464A (en) * 1981-06-11 1982-12-15 Mitsubishi Electric Corp Digital output frequency measuring receiver
JPS6134100B2 (en) * 1981-06-11 1986-08-06 Mitsubishi Electric Corp
JPS57207869A (en) * 1981-06-17 1982-12-20 Mitsubishi Electric Corp Digitizing instantaneous frequency measuring device

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