JPS5675713A - Parametric amplifier - Google Patents

Parametric amplifier

Info

Publication number
JPS5675713A
JPS5675713A JP15152179A JP15152179A JPS5675713A JP S5675713 A JPS5675713 A JP S5675713A JP 15152179 A JP15152179 A JP 15152179A JP 15152179 A JP15152179 A JP 15152179A JP S5675713 A JPS5675713 A JP S5675713A
Authority
JP
Japan
Prior art keywords
circuit
coaxial line
added inductance
equivalent circuit
recesses
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.)
Pending
Application number
JP15152179A
Other languages
Japanese (ja)
Inventor
Mitsushiro Kajikawa
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15152179A priority Critical patent/JPS5675713A/en
Publication of JPS5675713A publication Critical patent/JPS5675713A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F7/00—Parametric amplifiers

Abstract

PURPOSE:To obtain an optimum construction for the added inductance, by obtaining a stricter equivalent circuit as a coaxial line constituting the added inductance to cancell the reactance of a varactor. CONSTITUTION:A signal circuit of a parametric amplifier comparatively low in the signal frequency is constituted with a coaxial line 1, and consists of added inductance section 3, 1/4 wavelength transformer 4 and input and output 5. Although the added inductance 3 has recesses such as an idler choke 6 and a pump waveguide 8, since the recesses are very small, the equivalent circuit can be considered as a circuit between A-A' and B-B' by taking the circuit as a coaxial line. From this equivalent circuit, the shape or the band to minimize the resistance (r), that is, to minimize the noise temperature can be obtained.
JP15152179A 1979-11-22 1979-11-22 Parametric amplifier Pending JPS5675713A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15152179A JPS5675713A (en) 1979-11-22 1979-11-22 Parametric amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15152179A JPS5675713A (en) 1979-11-22 1979-11-22 Parametric amplifier

Publications (1)

Publication Number Publication Date
JPS5675713A true JPS5675713A (en) 1981-06-23

Family

ID=15520324

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15152179A Pending JPS5675713A (en) 1979-11-22 1979-11-22 Parametric amplifier

Country Status (1)

Country Link
JP (1) JPS5675713A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8199369B2 (en) 2005-11-07 2012-06-12 Ricoh Company, Ltd. Optical device having fixture structure and used in image reading device and image forming device
US8416467B2 (en) 2005-11-07 2013-04-09 Ricoh Company, Ltd. Fixture structure, optical device, image reading device and image forming device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8199369B2 (en) 2005-11-07 2012-06-12 Ricoh Company, Ltd. Optical device having fixture structure and used in image reading device and image forming device
US8416467B2 (en) 2005-11-07 2013-04-09 Ricoh Company, Ltd. Fixture structure, optical device, image reading device and image forming device

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