NL7902568A - LOW-PASS FILTER FOR THE TELEPHONY BAND. - Google Patents

LOW-PASS FILTER FOR THE TELEPHONY BAND.

Info

Publication number
NL7902568A
NL7902568A NL7902568A NL7902568A NL7902568A NL 7902568 A NL7902568 A NL 7902568A NL 7902568 A NL7902568 A NL 7902568A NL 7902568 A NL7902568 A NL 7902568A NL 7902568 A NL7902568 A NL 7902568A
Authority
NL
Netherlands
Prior art keywords
low
pass filter
telephony band
telephony
band
Prior art date
Application number
NL7902568A
Other languages
Dutch (nl)
Original Assignee
Cit Alcatel
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 Cit Alcatel filed Critical Cit Alcatel
Publication of NL7902568A publication Critical patent/NL7902568A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1217—Frequency selective two-port networks using amplifiers with feedback using a plurality of operational amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H19/00—Networks using time-varying elements, e.g. N-path filters
NL7902568A 1978-04-07 1979-04-02 LOW-PASS FILTER FOR THE TELEPHONY BAND. NL7902568A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7810479A FR2422291A1 (en) 1978-04-07 1978-04-07 LOW PASS FILTER FOR TELEPHONE BAND

Publications (1)

Publication Number Publication Date
NL7902568A true NL7902568A (en) 1979-10-09

Family

ID=9206879

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7902568A NL7902568A (en) 1978-04-07 1979-04-02 LOW-PASS FILTER FOR THE TELEPHONY BAND.

Country Status (15)

Country Link
JP (1) JPS54134952A (en)
AU (1) AU4584779A (en)
BE (1) BE874754A (en)
DE (1) DE2913135A1 (en)
EG (1) EG14776A (en)
FI (1) FI72018C (en)
FR (1) FR2422291A1 (en)
GB (1) GB2019146A (en)
IT (1) IT1118544B (en)
LU (1) LU81123A1 (en)
MX (1) MX144741A (en)
NL (1) NL7902568A (en)
PL (1) PL214706A1 (en)
SE (1) SE435121B (en)
ZA (1) ZA791627B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2307626B (en) * 1995-11-24 2000-06-07 Nokia Mobile Phones Ltd A signal receiver
DE10032530C2 (en) * 2000-07-05 2002-10-24 Infineon Technologies Ag Amplifier circuit with offset compensation
US6552604B2 (en) * 2001-02-16 2003-04-22 The Boeing Company Digitally tuned analog notch filter circuit
RU2677362C1 (en) * 2018-03-14 2019-01-16 федеральное государственное бюджетное образовательное учреждение высшего образования "Донской государственный технический университет" (ДГТУ) Active rc filter
RU2722752C1 (en) * 2019-12-11 2020-06-03 федеральное государственное бюджетное образовательное учреждение высшего образования "Донской государственный технический университет" (ДГТУ) Band-pass filter with independent adjustment of pole frequency, pole attenuation and transmission coefficient

Also Published As

Publication number Publication date
IT7967695A0 (en) 1979-04-03
FR2422291A1 (en) 1979-11-02
PL214706A1 (en) 1979-12-17
SE435121B (en) 1984-09-03
LU81123A1 (en) 1979-11-07
IT1118544B (en) 1986-03-03
BE874754A (en) 1979-09-12
FR2422291B1 (en) 1982-03-19
JPS54134952A (en) 1979-10-19
EG14776A (en) 1985-03-31
GB2019146A (en) 1979-10-24
FI72018B (en) 1986-11-28
DE2913135A1 (en) 1979-10-18
ZA791627B (en) 1980-04-30
FI791076A (en) 1979-10-08
AU4584779A (en) 1979-10-11
FI72018C (en) 1987-03-09
MX144741A (en) 1981-11-18
SE7903088L (en) 1979-10-08

Similar Documents

Publication Publication Date Title
NL190498C (en) Variable active filter.
NO791007L (en) FILTER.
NO152239C (en) WATER-MADE FILTER MAT.
ATE8209T1 (en) BAG FILTER.
NL7811737A (en) PUT FILTER.
NL7802648A (en) FILTER.
NL7812633A (en) FILTER MAT.
DE2966224D1 (en) An improved absolute, fluid filter
ATE18013T1 (en) BAG FILTER.
NO790838L (en) PRESS FILTER.
NO148839C (en) PRESSURE FILTER.
NL7900064A (en) FILTER DEVICE.
DE3280124D1 (en) BAND PASS FILTER.
NL7900662A (en) FILTER CENTRIFUGE.
NO793855L (en) FILTER MATERIAL.
NL7803430A (en) FILTER PRESS.
NL7500818A (en) LOW-PASS FILTER FOR HYPER-FREQUENCY.
NL7900863A (en) FILTER.
NL7902568A (en) LOW-PASS FILTER FOR THE TELEPHONY BAND.
IT7925011A0 (en) BAND PASS FILTER CIRCUIT.
NL7902870A (en) NOZZLE FOR FILTER CIGARETTE.
NO147823C (en) MULTI-DISC TURN FILTER.
NO790093L (en) FILTER PRESS.
NL7902034A (en) ACTIVE FILTER NETWORKS.
AU526266B2 (en) Telephony filter

Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BT A notification was added to the application dossier and made available to the public
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
BV The patent application has lapsed