JPS5521675A - Polyphase digital filter - Google Patents

Polyphase digital filter

Info

Publication number
JPS5521675A
JPS5521675A JP9518278A JP9518278A JPS5521675A JP S5521675 A JPS5521675 A JP S5521675A JP 9518278 A JP9518278 A JP 9518278A JP 9518278 A JP9518278 A JP 9518278A JP S5521675 A JPS5521675 A JP S5521675A
Authority
JP
Japan
Prior art keywords
input terminal
numerator
input
transfer function
terminal
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
JP9518278A
Other languages
Japanese (ja)
Other versions
JPS6115616B2 (en
Inventor
Akira Kanemasa
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 JP9518278A priority Critical patent/JPS5521675A/en
Publication of JPS5521675A publication Critical patent/JPS5521675A/en
Publication of JPS6115616B2 publication Critical patent/JPS6115616B2/ja
Granted 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)
  • Complex Calculations (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

PURPOSE:To simplify the circuit constitution, by reducing the amount of multiplication required and making small the scale of hardware, through the use of the symmetry of the coefficient of the numerator of the transfer function. CONSTITUTION:YN-1-i(ZN) is inputted from the input terminal 100, Yi-1(ZN) is inputted from the input terminal 200, and Ci(ZN) as shown in equation (11) is outputted from the output terminal 300. By this output, since the absolute value of the coefficient of the numerator of the real band filter Gi.O(-Z<2>N) and GN-1,i(-Z<2>N) has symmetry, the multipliers 31, 32 and 33 can commonly be used. When the input of the input terminal 200 is zeroed, the transfer function from the input terminal 100 to the output terminal 300 is G'i.O(-Z<2>N). When the input at the input terminal 100 is zeroed, the transfer function from the input terminal 200 to the output terminal 300 is Z<->NG'N-i,O(-Z<2>N). Thus, the number of multiplications for the numerator of the two real band filters can be equal to the number of multiplications of the numerator of the one real band filter.
JP9518278A 1978-08-03 1978-08-03 Polyphase digital filter Granted JPS5521675A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9518278A JPS5521675A (en) 1978-08-03 1978-08-03 Polyphase digital filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9518278A JPS5521675A (en) 1978-08-03 1978-08-03 Polyphase digital filter

Publications (2)

Publication Number Publication Date
JPS5521675A true JPS5521675A (en) 1980-02-15
JPS6115616B2 JPS6115616B2 (en) 1986-04-25

Family

ID=14130600

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9518278A Granted JPS5521675A (en) 1978-08-03 1978-08-03 Polyphase digital filter

Country Status (1)

Country Link
JP (1) JPS5521675A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7002429B2 (en) 2003-07-23 2006-02-21 Mitsubishi Denki Kabushiki Kaisha Nonreflective waveguide terminator and waveguide circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7002429B2 (en) 2003-07-23 2006-02-21 Mitsubishi Denki Kabushiki Kaisha Nonreflective waveguide terminator and waveguide circuit

Also Published As

Publication number Publication date
JPS6115616B2 (en) 1986-04-25

Similar Documents

Publication Publication Date Title
ES451825A1 (en) Interpolation-decimation circuit for increasing or decreasing digital sampling frequency
JPS5461822A (en) Transmitter circuit
JPS5521675A (en) Polyphase digital filter
JPS54131808A (en) Frequency counter
JPS5632818A (en) Noncyclic variable filter
JPS5721117A (en) Digital filter device
JPS5461858A (en) Digital filter
JPS5556278A (en) Non-linear arithmetic circuit
JPS54139447A (en) A/d conversion system
JPS56122518A (en) Digital differential filter
JPS5360539A (en) Digital filter
JPS5772415A (en) Circuir having function of band pass filter and oscillator
JPS5516573A (en) Cyclic variable filter
JPS55114050A (en) Modulator for single-sideband frequency-division multiple signal
JPS5494856A (en) Non-circulation type filter
JPS54134954A (en) Variable attenuating equalizer
JPS56149822A (en) Digital filter device
JPS5478053A (en) Filter circuit
SU669476A1 (en) Non-recursive digital low-pass filter
JPS5685926A (en) Digital filter
JPS5514751A (en) Non-cyclic variable filter
JPS5592017A (en) Digital filter
JPS5556741A (en) Digital level detector
JPS56120212A (en) Digital filter of block floating decimal point
JPS57155840A (en) Distortion reducing circuit