04234929 is referenced by 27 patents and cites 4 patents.

Disclosed is a device for controlling the selection of divider factors in a vernier frequency synthesizer employing a pair of phase lock loops coupled through a mixer to supply a synthesized output signal frequency. The control device generates a pair of divider factors for the respective programmable dividers of the two loops which will generate a particular synthesized output frequency and avoids predetermined divider factors such as those which are not processable by programmed dividers of the loops or which would generate frequencies within the loops causing spurious mixing products with other signals. The control device preferably takes the form of a microprocessor.

Title
Control device for a phase lock loop vernier frequency synthesizer
Application Number
6/78210
Publication Number
4234929
Application Date
September 24, 1979
Publication Date
November 18, 1980
Inventor
William J Riley Jr
Rochester
NY, US
Agent
L Lawton Rogers III
Assignee
Harris Corporation
FL, US
IPC
G06F 7/68
View Original Source