GB1284018A - Method of and apparatus for producing and filtering out harmonics of a fundamental frequency - Google Patents

Method of and apparatus for producing and filtering out harmonics of a fundamental frequency

Info

Publication number
GB1284018A
GB1284018A GB38415/70A GB3841570A GB1284018A GB 1284018 A GB1284018 A GB 1284018A GB 38415/70 A GB38415/70 A GB 38415/70A GB 3841570 A GB3841570 A GB 3841570A GB 1284018 A GB1284018 A GB 1284018A
Authority
GB
United Kingdom
Prior art keywords
frequency
fundamental frequency
harmonic
carrier
producing
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
GB38415/70A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1284018A publication Critical patent/GB1284018A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B19/00Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J1/00Frequency-division multiplex systems
    • H04J1/02Details
    • H04J1/06Arrangements for supplying the carrier waves ; Arrangements for supplying synchronisation signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Manipulation Of Pulses (AREA)
  • Networks Using Active Elements (AREA)
  • Amplifiers (AREA)

Abstract

1284018 Carrier frequency generators; frequency multipliers LICENTIA PATENTVERWALTUNGS-GmbH 10 Aug 1970 [12 Aug 1969] 38415/70 Headings H3T and H4R In a method of producing a harmonic of a fundamental frequency, e.g. for use as a carrier frequency in a carrier frequency system, the fundamental frequency is converted to a square wave or pulse stream of the same fundamental frequency and applied to a selection device, e.g. a tuned circuit, tuned to the desired harmonic and which shifts the phases of the adjacent harmonics in opposite directions by the same amount so that they appear as modulation, at the fundamental frequency, of a carrier at the desired harmonic frequency. The resulting signal is then converted to a square wave at the required frequency by amplitude limiting, triggering, or gating; which removes the modulation. The process may be repeated to improve the purity of the required frequency. The harmonic selector is suitable for realization as a printed or integrated circuit.
GB38415/70A 1969-08-12 1970-08-10 Method of and apparatus for producing and filtering out harmonics of a fundamental frequency Expired GB1284018A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691940903 DE1940903C2 (en) 1969-08-12 1969-08-12 Method for generating and filtering harmonics of a fundamental frequency, in particular frequencies for carrier frequency systems

Publications (1)

Publication Number Publication Date
GB1284018A true GB1284018A (en) 1972-08-02

Family

ID=5742539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38415/70A Expired GB1284018A (en) 1969-08-12 1970-08-10 Method of and apparatus for producing and filtering out harmonics of a fundamental frequency

Country Status (4)

Country Link
DE (1) DE1940903C2 (en)
FR (1) FR2056872A5 (en)
GB (1) GB1284018A (en)
SE (1) SE353000B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2688848B1 (en) * 1992-03-18 1994-06-17 Gkn Automotive Ag SLIDING TYPE ARTICULATED TRANSMISSION JOINT.

Also Published As

Publication number Publication date
DE1940903C2 (en) 1971-10-21
SE353000B (en) 1973-01-15
DE1940903B1 (en) 1971-03-11
FR2056872A5 (en) 1971-05-14

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee