JPS55134507A - Frequency converter - Google Patents

Frequency converter

Info

Publication number
JPS55134507A
JPS55134507A JP4133779A JP4133779A JPS55134507A JP S55134507 A JPS55134507 A JP S55134507A JP 4133779 A JP4133779 A JP 4133779A JP 4133779 A JP4133779 A JP 4133779A JP S55134507 A JPS55134507 A JP S55134507A
Authority
JP
Japan
Prior art keywords
hybrids
frequency converter
signal
outputs
extending over
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
JP4133779A
Other languages
Japanese (ja)
Inventor
Yoshitami Aono
Takeshi Takano
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4133779A priority Critical patent/JPS55134507A/en
Publication of JPS55134507A publication Critical patent/JPS55134507A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/14—Balanced arrangements
    • H03D7/1408—Balanced arrangements with diodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To improve input VSWR and mutual isolation extending over a wide range by connecting 90 deg. hybrids together as fixed. CONSTITUTION:A local oscillation signal and input signal are applied to inputs 35 and 36 of 90 deg. hybrids 20 and 21, and resistive terminators 24 and 25 are connected to the other terminals. Further, a single-balance type frequency converter is formed of 90 deg. hybrids 22 and 23, diodes 26 and 27, and 28 and 29, etc. Both outputs of hybrids 20 and 21 are connected to hybrids 22 and 23. The outputs of the above-mentioned diodes are out of phase and an IF signal is output by way of LPF34. In the circuit like this, reflected signals from respective hybrids are absorbed by resistive terminators and never returned to the other inputs mutually, so that each input VSWR and mutual isolation can be improved extending over a broad band.
JP4133779A 1979-04-05 1979-04-05 Frequency converter Pending JPS55134507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4133779A JPS55134507A (en) 1979-04-05 1979-04-05 Frequency converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4133779A JPS55134507A (en) 1979-04-05 1979-04-05 Frequency converter

Publications (1)

Publication Number Publication Date
JPS55134507A true JPS55134507A (en) 1980-10-20

Family

ID=12605697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4133779A Pending JPS55134507A (en) 1979-04-05 1979-04-05 Frequency converter

Country Status (1)

Country Link
JP (1) JPS55134507A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355420A (en) * 1979-12-03 1982-10-19 Nippon Electric Co., Ltd. Frequency converter capable of eliminating local power leak
US4603436A (en) * 1984-08-20 1986-07-29 Gte Laboratories Incorporated Microwave double balanced mixer
US4603435A (en) * 1984-08-20 1986-07-29 Gte Laboratories Incorporated Microwave mixer apparatus
US4864644A (en) * 1986-10-17 1989-09-05 Matsushita Electric Industrial Co., Ltd. VHF-UHF mixer having a balun
US5339457A (en) * 1988-12-09 1994-08-16 Canon Kabushiki Kaisha Superconductive electromagnetic wave mixer and superconductive electromagnetic wave mixing apparatus employing the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355420A (en) * 1979-12-03 1982-10-19 Nippon Electric Co., Ltd. Frequency converter capable of eliminating local power leak
US4603436A (en) * 1984-08-20 1986-07-29 Gte Laboratories Incorporated Microwave double balanced mixer
US4603435A (en) * 1984-08-20 1986-07-29 Gte Laboratories Incorporated Microwave mixer apparatus
US4864644A (en) * 1986-10-17 1989-09-05 Matsushita Electric Industrial Co., Ltd. VHF-UHF mixer having a balun
US5339457A (en) * 1988-12-09 1994-08-16 Canon Kabushiki Kaisha Superconductive electromagnetic wave mixer and superconductive electromagnetic wave mixing apparatus employing the same

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