GB1064156A - Improvements in or relating to electrical filters - Google Patents

Improvements in or relating to electrical filters

Info

Publication number
GB1064156A
GB1064156A GB392766A GB392766A GB1064156A GB 1064156 A GB1064156 A GB 1064156A GB 392766 A GB392766 A GB 392766A GB 392766 A GB392766 A GB 392766A GB 1064156 A GB1064156 A GB 1064156A
Authority
GB
United Kingdom
Prior art keywords
network
collector
base
parallel
resonant
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
GB392766A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1064156A publication Critical patent/GB1064156A/en
Expired legal-status Critical Current

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
    • H03H11/1213—Frequency selective two-port networks using amplifiers with feedback using transistor amplifiers

Landscapes

  • Transmitters (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Networks Using Active Elements (AREA)

Abstract

1,064,156. Transistor amplifying circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Jan. 28, 1966 [Feb. 2, 1965], No. 3927/66. Heading H3T. A transmission network exhibiting a narrow "stop" band comprises a transistor in common emitter connection, having impedances which are equal in magnitude and phase angle at the rejection frequency connected respectively in the emitter circuit and between collector and base. As shown, a parallel RC network 4, 5 is connected in the emitter circuit and a series RC network 2, 3 between collector and base. The response may be sharpened by using resonant circuits, i.e. a parallel resonant network may be connected in the emitter circuit (Fig. 3, not shown) and in addition a series resonant circuit between collector and base (Fig. 4, not shown). A number of networks may be connected in parallel so as to obtain more than one "stop " band.
GB392766A 1965-02-02 1966-01-28 Improvements in or relating to electrical filters Expired GB1064156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1965N0026152 DE1274754B (en) 1965-02-02 1965-02-02 Electric filter

Publications (1)

Publication Number Publication Date
GB1064156A true GB1064156A (en) 1967-04-05

Family

ID=7343730

Family Applications (1)

Application Number Title Priority Date Filing Date
GB392766A Expired GB1064156A (en) 1965-02-02 1966-01-28 Improvements in or relating to electrical filters

Country Status (3)

Country Link
AT (1) AT258360B (en)
DE (1) DE1274754B (en)
GB (1) GB1064156A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2198303A (en) * 1986-12-05 1988-06-08 Philips Electronic Associated Amplifier circuit arrangement
EP1119102A2 (en) * 2000-01-18 2001-07-25 Sanyo Electric Co., Ltd. Feedback circuit and amplifier and mixer comprising the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446370A1 (en) * 1984-12-19 1986-07-03 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for obtaining an individual signal oscillation from a signal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1103406B (en) * 1958-02-27 1961-03-30 Deutsche Elektronik Gmbh Frequency-selective amplifier, especially low-frequency amplifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2198303A (en) * 1986-12-05 1988-06-08 Philips Electronic Associated Amplifier circuit arrangement
EP1119102A2 (en) * 2000-01-18 2001-07-25 Sanyo Electric Co., Ltd. Feedback circuit and amplifier and mixer comprising the same
EP1119102A3 (en) * 2000-01-18 2004-06-16 Sanyo Electric Co., Ltd. Feedback circuit and amplifier and mixer comprising the same

Also Published As

Publication number Publication date
AT258360B (en) 1967-11-27
DE1274754B (en) 1968-08-08

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