JPS54117610A - Digital frequency sweep receiver - Google Patents

Digital frequency sweep receiver

Info

Publication number
JPS54117610A
JPS54117610A JP2424778A JP2424778A JPS54117610A JP S54117610 A JPS54117610 A JP S54117610A JP 2424778 A JP2424778 A JP 2424778A JP 2424778 A JP2424778 A JP 2424778A JP S54117610 A JPS54117610 A JP S54117610A
Authority
JP
Japan
Prior art keywords
frequency
mixed
synthesizer
output
good
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
JP2424778A
Other languages
Japanese (ja)
Inventor
Kiyoshi Murasawa
Takao Inoue
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2424778A priority Critical patent/JPS54117610A/en
Publication of JPS54117610A publication Critical patent/JPS54117610A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/32—Automatic scanning over a band of frequencies with simultaneous display of received frequencies, e.g. panoramic receivers

Abstract

PURPOSE:To make a good-frequency precision and good-linearity wide band sweep possible and facilitate the frequency set at a delayed recieving time by using a frequency synthesizer for a local oscillator. CONSTITUTION:The output of frequency synthesizer 27 where the oscillated frequency is swept to repeat the changes in steps according to time elaspe and output signals of local oscillator 21 to 23 which oscillate at an approximately fixed frequency are mixed in 24, and the mixed output and the receiving input signal are mixed in 12. Then, prescribed outputs are successively mixed in 13 to 14 to obtain IF signals, thereby performing detection in 18. Then, a gate signal which synchronizes with each change step of synthesizer 27 is generated in 30, and gate 19 is controlled by this gate signal to display the detected frequency spectrum on 20 synchronously with the sweep of synthesizer 27.
JP2424778A 1978-03-03 1978-03-03 Digital frequency sweep receiver Pending JPS54117610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2424778A JPS54117610A (en) 1978-03-03 1978-03-03 Digital frequency sweep receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2424778A JPS54117610A (en) 1978-03-03 1978-03-03 Digital frequency sweep receiver

Publications (1)

Publication Number Publication Date
JPS54117610A true JPS54117610A (en) 1979-09-12

Family

ID=12132912

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2424778A Pending JPS54117610A (en) 1978-03-03 1978-03-03 Digital frequency sweep receiver

Country Status (1)

Country Link
JP (1) JPS54117610A (en)

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