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GB2005507A - Negative impedance converters - Google Patents

Negative impedance converters

Info

Publication number
GB2005507A
GB2005507A GB7838015A GB7838015A GB2005507A GB 2005507 A GB2005507 A GB 2005507A GB 7838015 A GB7838015 A GB 7838015A GB 7838015 A GB7838015 A GB 7838015A GB 2005507 A GB2005507 A GB 2005507A
Authority
GB
United Kingdom
Prior art keywords
negative impedance
inverting input
converter
output
port
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.)
Withdrawn
Application number
GB7838015A
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom 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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of GB2005507A publication Critical patent/GB2005507A/en
Withdrawn legal-status Critical Current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
    • H03H11/40—Impedance converters
    • H03H11/44—Negative impedance converters

Landscapes

  • Networks Using Active Elements (AREA)
  • Amplifiers (AREA)

Abstract

An improved negative impedance converter comprising: a conventional negative impedance converter 20 having a negative impedance port and a positive impedance port 10, 10'; a first differential operational amplifier A2 having an inverting input and a non- inverting input and an output; said inverting input receiving one side 11'' of said negative impedance port; said non-inverting input receiving a reference voltage-VF; and said output 11' forming, with the other side 11 of said negative impedance port, the output of said improved negative impedance converter. The additional amplifier increases the amplitude range of the converter. <IMAGE>
GB7838015A 1977-09-30 1978-09-25 Negative impedance converters Withdrawn GB2005507A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000287826A CA1106005A (en) 1977-09-30 1977-09-30 Negative impedance converters

Publications (1)

Publication Number Publication Date
GB2005507A true GB2005507A (en) 1979-04-19

Family

ID=4109670

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7838015A Withdrawn GB2005507A (en) 1977-09-30 1978-09-25 Negative impedance converters

Country Status (2)

Country Link
CA (1) CA1106005A (en)
GB (1) GB2005507A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0035180A2 (en) * 1980-02-29 1981-09-09 Siemens Aktiengesellschaft Circuit arrangement for increasing the inductance of a transformer
US4587500A (en) * 1982-09-27 1986-05-06 Sanyo Electric Co., Ltd. Variable reactance circuit producing negative to positive varying reactance
WO1999046858A1 (en) * 1998-03-12 1999-09-16 The Boeing Company Broadband piezoelectric shunts for structural vibration control

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0035180A2 (en) * 1980-02-29 1981-09-09 Siemens Aktiengesellschaft Circuit arrangement for increasing the inductance of a transformer
EP0035180A3 (en) * 1980-02-29 1982-08-18 Siemens Aktiengesellschaft Circuit arrangement for increasing the inductance of a transformer
US4587500A (en) * 1982-09-27 1986-05-06 Sanyo Electric Co., Ltd. Variable reactance circuit producing negative to positive varying reactance
WO1999046858A1 (en) * 1998-03-12 1999-09-16 The Boeing Company Broadband piezoelectric shunts for structural vibration control

Also Published As

Publication number Publication date
CA1106005A (en) 1981-07-28

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)