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GB1274270A - Improvements in or relating to electrical attenuation equalizer circuits - Google Patents

Improvements in or relating to electrical attenuation equalizer circuits

Info

Publication number
GB1274270A
GB1274270A GB4775969A GB4775969A GB1274270A GB 1274270 A GB1274270 A GB 1274270A GB 4775969 A GB4775969 A GB 4775969A GB 4775969 A GB4775969 A GB 4775969A GB 1274270 A GB1274270 A GB 1274270A
Authority
GB
United Kingdom
Prior art keywords
tuned circuit
relating
attenuation equalizer
sept
equalizer circuits
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
GB4775969A
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of GB1274270A publication Critical patent/GB1274270A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/12—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of attenuating means

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Networks Using Active Elements (AREA)
  • Amplifiers (AREA)

Abstract

1,274,270. Transistor amplifier circuits. SIEMENS A.G. 29 Sept., 1969 [30 Sept., 1968], No. 47759/69. Heading H3T. - An attenuation equalizer comprises two transistor amplifier stages coupled together through a network having a parallel tuned circuit coupled across the output of the first amplifier stage, and inductively coupled to a series tuned circuit which is connected to the input of the second amplifier stage via a variable resistor to adjust the attenuation characteristic. As described the two amplifiers common base stages and the series tuned circuit includes a variable capacitor.
GB4775969A 1968-09-30 1969-09-29 Improvements in or relating to electrical attenuation equalizer circuits Expired GB1274270A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681791202 DE1791202C3 (en) 1968-09-30 1968-09-30 Adjustable electrical equalization circuit

Publications (1)

Publication Number Publication Date
GB1274270A true GB1274270A (en) 1972-05-17

Family

ID=5707130

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4775969A Expired GB1274270A (en) 1968-09-30 1969-09-29 Improvements in or relating to electrical attenuation equalizer circuits

Country Status (8)

Country Link
JP (1) JPS4936147B1 (en)
AT (1) AT294917B (en)
BE (1) BE739600A (en)
DE (1) DE1791202C3 (en)
FR (1) FR2019182A1 (en)
GB (1) GB1274270A (en)
NL (1) NL145419B (en)
SE (1) SE360233B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1096668A4 (en) * 1998-07-06 2005-02-02 Nec Corp Power amplifier
EP1162731A3 (en) * 2000-06-08 2006-10-25 Sumitomo Electric Industries, Ltd. Microwave amplifying circuit, microwave amplifying device, and distortion compensation circuit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3205875C2 (en) * 1982-02-18 1984-03-08 Siemens AG, 1000 Berlin und 8000 München Adjustable equalizer circuit
DE19501113C1 (en) * 1995-01-17 1996-04-18 Spaun Electronic Gmbh Transmission line equaliser for microwave signals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1096668A4 (en) * 1998-07-06 2005-02-02 Nec Corp Power amplifier
EP1162731A3 (en) * 2000-06-08 2006-10-25 Sumitomo Electric Industries, Ltd. Microwave amplifying circuit, microwave amplifying device, and distortion compensation circuit

Also Published As

Publication number Publication date
DE1791202C3 (en) 1979-07-05
FR2019182A1 (en) 1970-06-26
SE360233B (en) 1973-09-17
BE739600A (en) 1970-03-31
AT294917B (en) 1971-12-10
DE1791202A1 (en) 1971-11-25
DE1791202B2 (en) 1976-01-22
NL145419B (en) 1975-03-17
JPS4936147B1 (en) 1974-09-27
NL6914055A (en) 1970-04-01

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee