[go: up one dir, main page]

JPS5443664A - Parametric amplifier - Google Patents

Parametric amplifier

Info

Publication number
JPS5443664A
JPS5443664A JP11028977A JP11028977A JPS5443664A JP S5443664 A JPS5443664 A JP S5443664A JP 11028977 A JP11028977 A JP 11028977A JP 11028977 A JP11028977 A JP 11028977A JP S5443664 A JPS5443664 A JP S5443664A
Authority
JP
Japan
Prior art keywords
impedance
line
characteristic
characteristic impedance
circulator side
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.)
Granted
Application number
JP11028977A
Other languages
Japanese (ja)
Other versions
JPS5846083B2 (en
Inventor
Toshio Nakazawa
Taiji Taketomi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP11028977A priority Critical patent/JPS5846083B2/en
Publication of JPS5443664A publication Critical patent/JPS5443664A/en
Publication of JPS5846083B2 publication Critical patent/JPS5846083B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F7/00—Parametric amplifiers
    • H03F7/04—Parametric amplifiers using variable-capacitance element; using variable-permittivity element

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To reduce the deterioration of noise characteristic by constituting a double resonating sub-resonator and an impedance transformer by three-stage cascade connection of 1/4 wave length lines and making the characteristic impedance of one on them, which is positioned nearest to the circulator side, higher than the circulator side impedance. CONSTITUTION:A double resonating sub-resonator and an impedance transformer are constituted by 1/4 wave length lines 5, 6 and 7. In this constitution, when the circulator side impedance, the characteristic impedance of line 7, the characteristic impedance of line 6 and the characteristic impedance of line 5 are denoted as Z0, Z3, Z4 and Z3 respectively, Z0/Z2=Z3 (1/Z4+1/Z5)/2 is true; and if Z3>Z0, Z5> Z2 is true. Therefore, if characteristic impedance Z3 of line 7 is beforehand made higher than circulator side impedance Z0, the deterioration degree of noise characteristic dependent upon line loss is reduced.
JP11028977A 1977-09-13 1977-09-13 parametric amplifier Expired JPS5846083B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11028977A JPS5846083B2 (en) 1977-09-13 1977-09-13 parametric amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11028977A JPS5846083B2 (en) 1977-09-13 1977-09-13 parametric amplifier

Publications (2)

Publication Number Publication Date
JPS5443664A true JPS5443664A (en) 1979-04-06
JPS5846083B2 JPS5846083B2 (en) 1983-10-14

Family

ID=14531917

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11028977A Expired JPS5846083B2 (en) 1977-09-13 1977-09-13 parametric amplifier

Country Status (1)

Country Link
JP (1) JPS5846083B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5880643U (en) * 1981-11-26 1983-05-31 株式会社小松製作所 Timing belt
JPS60252838A (en) * 1984-05-26 1985-12-13 Yuasa Kk Peculiar shape endless belt and manufacturing method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6231281U (en) * 1985-08-10 1987-02-25

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5880643U (en) * 1981-11-26 1983-05-31 株式会社小松製作所 Timing belt
JPS60252838A (en) * 1984-05-26 1985-12-13 Yuasa Kk Peculiar shape endless belt and manufacturing method thereof

Also Published As

Publication number Publication date
JPS5846083B2 (en) 1983-10-14

Similar Documents

Publication Publication Date Title
ES8506943A1 (en) Active windscreen antenna for all kinds of polarization.
JPS5443664A (en) Parametric amplifier
JPS5314549A (en) Spiral traveling wave tube
JPS5676611A (en) Low noise amplifying circuit
JPS543449A (en) Semioptical band blooking filter
JPS5323254A (en) Amplifier equipment
US3946341A (en) Broadband electroacoustic delay lines
JPS53132246A (en) Elastic surface wave filter
JPS5298451A (en) Parametric amplifier
GB856889A (en) Improvements in or relating to transmission lines
JPS53102648A (en) Magnetostriction delay line
JPS5466753A (en) Amplifying circuit
JPS53116762A (en) Parametric amplifier
JPS5324252A (en) Frequency band amplifier circuit
JPS5270732A (en) High/low harmonic wave deletion circuit
JPS53131738A (en) Branching circuit
JPS5443654A (en) Coupler
JPS5394854A (en) Microwave amplifier
JPS6230327Y2 (en)
JPS5437663A (en) Antenna
JPS5437451A (en) Reflective negative resistance amplifier
JPS5658305A (en) Amplifier at ultra-high frequency band
GB975834A (en) Parametric amplifiers
JPS5358749A (en) Gain control circuit
JPS5444853A (en) Directional coupler