JPS5778210A - Filter circuit - Google Patents

Filter circuit

Info

Publication number
JPS5778210A
JPS5778210A JP15324280A JP15324280A JPS5778210A JP S5778210 A JPS5778210 A JP S5778210A JP 15324280 A JP15324280 A JP 15324280A JP 15324280 A JP15324280 A JP 15324280A JP S5778210 A JPS5778210 A JP S5778210A
Authority
JP
Japan
Prior art keywords
time
frequency components
elements
delay
distributed
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
JP15324280A
Other languages
Japanese (ja)
Inventor
Naoki Suehiro
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 JP15324280A priority Critical patent/JPS5778210A/en
Publication of JPS5778210A publication Critical patent/JPS5778210A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To obtain a signal which has the waveform of less side lobe and has the energy distributed concentratively in a short-time part, by processing an input signal, where N number kinds of frequency components continue for every N time, by delay elements and a Fourier converting circuit. CONSTITUTION:An input signal which has respective frequency components continued for every N time and consists of N number kinds of frequency components is applied to a terminal 1 and is applied successively to delay elements 21-2N-1 of a delay time tau, and N number branch signals at intervals of the time tau are led out from elements 21-2N-1 and are inputted to an N degree Fourier converting circuit 4. Signals subjected to Fourier conversion by the circuit 4 are inputted to delay elements 61-6N-1 of a delay time Ntau in order from higher frequency components to lower frequency components, and outputs of elements 61-6N-1 are added and outputted from an output terminal 7. As the result, the output signal becomes a signal which has the energy of the input signal, where the energy is distributed for a long time, distributed concentratively in a short-time part and has the waveform of less side lobe.
JP15324280A 1980-10-31 1980-10-31 Filter circuit Pending JPS5778210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15324280A JPS5778210A (en) 1980-10-31 1980-10-31 Filter circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15324280A JPS5778210A (en) 1980-10-31 1980-10-31 Filter circuit

Publications (1)

Publication Number Publication Date
JPS5778210A true JPS5778210A (en) 1982-05-15

Family

ID=15558159

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15324280A Pending JPS5778210A (en) 1980-10-31 1980-10-31 Filter circuit

Country Status (1)

Country Link
JP (1) JPS5778210A (en)

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