GB953068A - Improvements in or relating to frequency converters - Google Patents

Improvements in or relating to frequency converters

Info

Publication number
GB953068A
GB953068A GB4059260A GB4059260A GB953068A GB 953068 A GB953068 A GB 953068A GB 4059260 A GB4059260 A GB 4059260A GB 4059260 A GB4059260 A GB 4059260A GB 953068 A GB953068 A GB 953068A
Authority
GB
United Kingdom
Prior art keywords
circulator
arm
frequency
band
signal
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
Application number
GB4059260A
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 and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
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 and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB953068A publication Critical patent/GB953068A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D9/00—Demodulation or transference of modulation of modulated electromagnetic waves
    • H03D9/06—Transference of modulation using distributed inductance and capacitance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F7/00—Parametric amplifiers
    • 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)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Amplifiers (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

953,068. Frequency changer circuits; parametric amplifiers. SIEMENS & HALSKE A.G. Nov. 25, 1960 [Nov. 27, 1959], No. 40592/60. Headings H3B and H3F. A frequency converter comprises a circulator having connected thereto a first high-frequency input source, a frequency converter element to which a second frequency lower than the first is applied, a band-pass filter and a high-frequency energy absorber, the connections succeeding each other in the direction of transmission of energy round the circulator and the converter element being matched to the circulator. The Figure shows a circulator 1 having a 6000 mc/s. signal applied via an arm 5 to an arm 6. Arm 6 includes a frequency conversion element 2 and an input circuit 10 by which a 70 mc/s. signal is applied so that side-band components emerge from arm 6 and travel round the circulator to arm 7 where the upper side-band is selected by a filter 3 and passed to load 9. Arm 8 comprises an absorbing load 4 for the unwanted components. The converter element 2 is matched to the circulator by a transformer or by a quarter-wave line and may be in the form of a parametric amplifier of the type described in Specifications 951,310 and 953,067 in which case the 70 mc/s. signal may be generated by selfexcitation in a resonant circuit connected in input circuit 10 and in which an idler circuit absorbs the unwanted side-band.
GB4059260A 1959-11-27 1960-11-25 Improvements in or relating to frequency converters Expired GB953068A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES66019A DE1195370B (en) 1959-11-27 1959-11-27 Overlay arrangement for very short electromagnetic waves

Publications (1)

Publication Number Publication Date
GB953068A true GB953068A (en) 1964-03-25

Family

ID=7498484

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4059260A Expired GB953068A (en) 1959-11-27 1960-11-25 Improvements in or relating to frequency converters

Country Status (4)

Country Link
BE (1) BE597452A (en)
DE (1) DE1195370B (en)
GB (1) GB953068A (en)
NL (1) NL258290A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL221438A (en) * 1956-10-29

Also Published As

Publication number Publication date
NL258290A (en)
DE1195370B (en) 1965-06-24
BE597452A (en) 1961-03-15

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