Title:
【発明の名称】コヒーレント分割によるデジタルシンセサイザ
Document Type and Number:
Japanese Patent JP2003500958
Kind Code:
A
Abstract:
A direct digital frequency-synthesis device includes a modulo-M coherent accumulator that generates a first phase law from a frequency-control word. A table, addressed by a second phase law derived from the first phase law, generates a digital sinusoidal signal. A digital/analog converter converts the digital sinusoidal signal into an analog sinusoidal signal. A filter filters the analog sinusoidal signal. And, a divider divides the filtered signal. The divider has a lower order than M and has a synchronization input driven by a synchronization pulse for re-synchronizing the signal after division, the synchronization pulse being derived from the phase law. Such a device may find particular application to digital synthesizers for radar.
Inventors:
Gabe Pascal
De Guy Jean-Luc
De Guy Jean-Luc
Application Number:
JP2000620447A
Publication Date:
January 07, 2003
Filing Date:
May 16, 2000
Export Citation:
Assignee:
Thales
International Classes:
H03B28/00; G06F1/03; H04L27/12; G06F7/72; (IPC1-7): H03B28/00
Attorney, Agent or Firm:
Keiichi Yamamoto