Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
  • H04B1/06—Receivers
  • H04B1/16—Circuits
  • H04B1/30—Circuits for homodyne or synchrodyne receivers
  • H04B1/302—Circuits for homodyne or synchrodyne receivers for single sideband receivers
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
  • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
  • H03J7/02—Automatic frequency control
  • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
  • H03J7/047—Automatic frequency control using an auxiliary signal, e.g. low frequency scanning of the locking range or superimposing a special signal on the input signal
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
  • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
  • H03J7/18—Automatic scanning over a band of frequencies
  • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
  • H03J7/24—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using varactors, i.e. voltage variable reactive diodes
  • H03J7/26—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using varactors, i.e. voltage variable reactive diodes in which an automatic frequency control circuit is brought into action after the scanning action has been stopped
• • 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)
• Computer Networks & Wireless Communication (AREA)
• Signal Processing (AREA)
• Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
• Channel Selection Circuits, Automatic Tuning Circuits (AREA)
• Radar Systems Or Details Thereof (AREA)
• Superheterodyne Receivers (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=19802388

Family Applications (1)

Country Status (6)

Families Citing this family (10)

Family Cites Families (3)

• 0
  • BE BE504213D patent/BE504213A/xx unknown
  • NL NL81046D patent/NL81046C/xx active
• 1951
  • 1951-05-09 US US225418A patent/US2698904A/en not_active Expired - Lifetime
  • 1951-06-22 GB GB14894/51A patent/GB679457A/en not_active Expired
  • 1951-06-24 DE DEN4071A patent/DE846421C/de not_active Expired
  • 1951-06-25 FR FR1044810D patent/FR1044810A/fr not_active Expired
• 1953
  • 1953-08-14 GB GB22464/53A patent/GB725903A/en not_active Expired
  • 1953-08-17 FR FR64547D patent/FR64547E/fr not_active Expired
  • 1953-08-18 DE DEN7599A patent/DE925053C/de not_active Expired

Also Published As

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