GB1427370A - Digital filter bank - Google Patents

Digital filter bank

Info

Publication number
GB1427370A
GB1427370A GB5913473A GB5913473A GB1427370A GB 1427370 A GB1427370 A GB 1427370A GB 5913473 A GB5913473 A GB 5913473A GB 5913473 A GB5913473 A GB 5913473A GB 1427370 A GB1427370 A GB 1427370A
Authority
GB
United Kingdom
Prior art keywords
outputs
multipliers
filter bank
fourier transform
fast fourier
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.)
Expired
Application number
GB5913473A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1427370A publication Critical patent/GB1427370A/en
Expired 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
    • H03H17/06—Non-recursive filters

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Complex Calculations (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

1427370 Active filters LICENTIA PATENT VERWALTUNGS GmbH 20 Dec 1973 [21 1972] 59134/73 Heading H3U A filter bank in the form of a digital transversal filter for multiplex operation having the number of channel N = 2 q where q is an integer comprising M-1 serially connected delay elements, with multipliers connected to the input of the first, the output of the last, and at least some of the junction points is characterized in that the outputs from the multipliers are combined in an adder whose output is connected to a Fast Fourier Transform circuit. In one embodiment, Fig. 3, the delay elements are grouped into M/N - 1 sections where M and N are integers and M/N tappings are connected to respective multipliers P1 to which are sequentially applied groups of weighting coefficients from store Sp 1 . The multiplier outputs are then applied to adder A<SP>1</SP> whose output is fed to a Fast Fourier Transform circuit FFT. In a second embodiment Fig. 2 (not shown) outputs are taken from each stage of a delay.
GB5913473A 1972-12-21 1973-12-20 Digital filter bank Expired GB1427370A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722262652 DE2262652C2 (en) 1972-12-21 1972-12-21 Digital filter bank

Publications (1)

Publication Number Publication Date
GB1427370A true GB1427370A (en) 1976-03-10

Family

ID=5865084

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5913473A Expired GB1427370A (en) 1972-12-21 1973-12-20 Digital filter bank

Country Status (4)

Country Link
DE (1) DE2262652C2 (en)
FR (1) FR2228327B1 (en)
GB (1) GB1427370A (en)
IT (1) IT1000496B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101820268A (en) * 2010-04-27 2010-09-01 广州市广晟微电子有限公司 Circuit and method for correcting direct current of active RC filter

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2436013C2 (en) * 1974-07-26 1984-09-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Non-recursive digital filter
FR2321217A1 (en) * 1975-08-13 1977-03-11 Cit Alcatel DEVICE FOR PROCESSING A SAMPLE SIGNAL
DE2752018C2 (en) * 1977-11-22 1985-08-22 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Multi-channel jammer
DE2846207A1 (en) * 1978-10-24 1980-05-08 Licentia Gmbh Input signal level control for digital receiver - uses closed loop feedback for setting level limit
JPS5558612A (en) * 1978-10-26 1980-05-01 Kokusai Denshin Denwa Co Ltd <Kdd> Delay circuit
DE2950892A1 (en) * 1979-12-18 1981-06-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Multiple digital telegraphic data channels in one speech channel - employing time multiplexing and use of single digital transmitters and receivers
US4317092A (en) * 1980-06-30 1982-02-23 Hewlett-Packard Company Recursive low pass digital filter
DE3243604C2 (en) * 1982-11-25 1993-11-11 Deutsche Aerospace Arrangement for radar signal processing
FR2536942A1 (en) * 1982-11-26 1984-06-01 Thomson Csf Mat Tel Interpolating digital computational circuit ensuring filtering and, if appropriate, equalisation.
DE3517485A1 (en) * 1985-05-15 1986-11-20 Blaupunkt-Werke Gmbh, 3200 Hildesheim DEMODULATOR FOR FREQUENCY MODULATED SIGNALS IN DIGITAL FORM

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573380A (en) * 1969-05-15 1971-04-06 Bell Telephone Labor Inc Single-sideband modulation system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101820268A (en) * 2010-04-27 2010-09-01 广州市广晟微电子有限公司 Circuit and method for correcting direct current of active RC filter
CN101820268B (en) * 2010-04-27 2012-07-04 广州市广晟微电子有限公司 Circuit and method for correcting direct current of active RC filter

Also Published As

Publication number Publication date
IT1000496B (en) 1976-03-30
FR2228327B1 (en) 1976-07-30
DE2262652C2 (en) 1983-06-30
DE2262652A1 (en) 1974-06-27
FR2228327A1 (en) 1974-11-29

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee