DE4024166C1 - - Google Patents

Info

Publication number
DE4024166C1
DE4024166C1 DE4024166A DE4024166A DE4024166C1 DE 4024166 C1 DE4024166 C1 DE 4024166C1 DE 4024166 A DE4024166 A DE 4024166A DE 4024166 A DE4024166 A DE 4024166A DE 4024166 C1 DE4024166 C1 DE 4024166C1
Authority
DE
Germany
Prior art keywords
noise
impedance
input
real
amplifier
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 - Fee Related
Application number
DE4024166A
Other languages
German (de)
English (en)
Inventor
Markus Dipl.-Ing. 8520 Erlangen De Vester
Klaus 8550 Forchheim De Zametzer
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
Original Assignee
Siemens AG
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 filed Critical Siemens AG
Priority to DE4024166A priority Critical patent/DE4024166C1/de
Priority to JP3208835A priority patent/JPH04256208A/ja
Priority to US07/737,486 priority patent/US5159289A/en
Application granted granted Critical
Publication of DE4024166C1 publication Critical patent/DE4024166C1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • 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
    • H03F1/56—Modifications of input or output impedances, not otherwise provided for
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
DE4024166A 1990-07-30 1990-07-30 Expired - Fee Related DE4024166C1 (enExample)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE4024166A DE4024166C1 (enExample) 1990-07-30 1990-07-30
JP3208835A JPH04256208A (ja) 1990-07-30 1991-07-26 低雑音広帯域増幅器のための入力段
US07/737,486 US5159289A (en) 1990-07-30 1991-07-30 Low-noise, high-frequency broadband amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4024166A DE4024166C1 (enExample) 1990-07-30 1990-07-30

Publications (1)

Publication Number Publication Date
DE4024166C1 true DE4024166C1 (enExample) 1991-12-19

Family

ID=6411305

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4024166A Expired - Fee Related DE4024166C1 (enExample) 1990-07-30 1990-07-30

Country Status (3)

Country Link
US (1) US5159289A (enExample)
JP (1) JPH04256208A (enExample)
DE (1) DE4024166C1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19946459A1 (de) * 1999-09-28 2001-04-26 Siemens Ag Rauscharme Breitbandverstärkereinrichtung mit Gegenkopplung über eine gesteuerte Stromquelle sowie Verwendung der Verstärkereinrichtung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5914640A (en) * 1996-02-29 1999-06-22 Texas Instruments Incorporated Method and system for matching the input impedance of an RF amplifier an antenna to impedance
JPH11102916A (ja) * 1997-09-29 1999-04-13 Nec Corp 半導体集積回路装置およびその設計方法
GB0707185D0 (en) * 2007-04-13 2007-05-23 Cambridge Silicon Radio Ltd Controlling amplifier input impedance

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2227117A1 (de) * 1971-06-04 1973-01-04 Redac Software Ltd Elektrische schaltungsanordnung mit parallet- und reihenrueckkopplung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5228878A (en) * 1975-08-29 1977-03-04 Nippon Gakki Seizo Kk Transistor for small signal
JPS5249755A (en) * 1975-10-17 1977-04-21 Matsushita Electric Ind Co Ltd Operational amplifier circuit
JPS589410A (ja) * 1981-07-09 1983-01-19 Toshiba Corp 演算増幅器
FR2626377B1 (fr) * 1988-01-26 1990-06-01 Crouzet Sa Oscillateur nucleaire comprenant une sonde a resonance magnetique nucleaire

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2227117A1 (de) * 1971-06-04 1973-01-04 Redac Software Ltd Elektrische schaltungsanordnung mit parallet- und reihenrueckkopplung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19946459A1 (de) * 1999-09-28 2001-04-26 Siemens Ag Rauscharme Breitbandverstärkereinrichtung mit Gegenkopplung über eine gesteuerte Stromquelle sowie Verwendung der Verstärkereinrichtung
DE19946459B4 (de) * 1999-09-28 2004-01-08 Siemens Ag Rauscharme breitbandige Verstärkereinrichtung sowie Verwendung der Verstärkereinrichtung

Also Published As

Publication number Publication date
US5159289A (en) 1992-10-27
JPH04256208A (ja) 1992-09-10

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee