ZA711637B - Improvement in or relating to frequency control circuits - Google Patents

Improvement in or relating to frequency control circuits

Info

Publication number
ZA711637B
ZA711637B ZA711637A ZA711637A ZA711637B ZA 711637 B ZA711637 B ZA 711637B ZA 711637 A ZA711637 A ZA 711637A ZA 711637 A ZA711637 A ZA 711637A ZA 711637 B ZA711637 B ZA 711637B
Authority
ZA
South Africa
Prior art keywords
relating
improvement
frequency control
control circuits
circuits
Prior art date
Application number
ZA711637A
Inventor
M Hossmann
E Wigger
J Rurack
Original Assignee
Siemens Ag Albis
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 Ag Albis filed Critical Siemens Ag Albis
Publication of ZA711637B publication Critical patent/ZA711637B/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/82—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
    • G01S13/84—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted for distance determination by phase measurement
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
    • H03L7/12—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a scanning signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmitters (AREA)
  • Radar Systems Or Details Thereof (AREA)
ZA711637A 1970-05-26 1971-03-12 Improvement in or relating to frequency control circuits ZA711637B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH461070A CH507616A (en) 1970-05-26 1970-05-26 Frequency control circuit for a transceiver of an electrical distance measuring system that can be switched either as a main or as a secondary station

Publications (1)

Publication Number Publication Date
ZA711637B true ZA711637B (en) 1971-12-29

Family

ID=4279306

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA711637A ZA711637B (en) 1970-05-26 1971-03-12 Improvement in or relating to frequency control circuits

Country Status (4)

Country Link
CH (1) CH507616A (en)
DE (1) DE2034719B2 (en)
GB (1) GB1285526A (en)
ZA (1) ZA711637B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2217967C2 (en) * 1972-04-14 1984-03-08 ANT Nachrichtentechnik GmbH, 7150 Backnang Frequency control for radio relay station - avoids unwanted frequencies using phase discriminator to compare mixer with crystal and tune free-running oscillator

Also Published As

Publication number Publication date
CH507616A (en) 1971-05-15
DE2034719B2 (en) 1971-12-02
GB1285526A (en) 1972-08-16
DE2034719A1 (en) 1971-12-02

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