04458329 is referenced by 14 patents and cites 7 patents.

A synthesizer comprises a basic synthesizer (1) generating a frequency Fo+.xi., wherein .xi. can be varied by small incremental steps, and a phase-locking loop (including a divider 2, a comparator 3, a filter 6, a mixer 4) setting the frequency of an intermediate oscillator (5) to a value Fi=(Fo+.xi.)/(NR+M), wherein NR+M is the division rate of divider 2. A fractional multiplier including an output oscillator 8, a mixer 9, harmonic generators 7 to 12, a divider 13 and a phase comparator 11 multiplies intermediate oscillator frequency Fi by N+(M/R), wherein R preferably is 5. The synthesizer can be used to synthesize frequencies up to several gigahertz.

Title
Frequency synthesizer including a fractional multiplier
Application Number
6/326773
Publication Number
4458329
Application Date
December 2, 1981
Publication Date
July 3, 1984
Inventor
Joel Remy
Paris
FR
Agent
William A Drucker
Assignee
Adret Electronique
FR
IPC
G06G 7/26
View Original Source