Patent · US Expired

Sampling PLL for high resolution radar systems

US6385266B1 · kind B1 · utility

4Cited by

7References

15Claims

0Family size

Assignee

EADS Deutschland GmbH · DE

Inventors

Babette Häberle · Blaustein, DE
Walter Ludwig · Nersingen, DE
Harald Schuster · Neu-Ulm, DE

Key dates

Filing date	Nov 4, 1998
Grant date	May 7, 2002
Priority date	—
Expiry date	Nov 4, 2018

Classification

Technology area (CPC H)Electricity
CPC primaryH03L7/091
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A low-noise sampling PLL for high-resolution radar systems wherein the reference frequencies are taken from a line spectrum (SPK), which has been generated from the mixture of a low quartz oscillator frequency (F1) with a high quartz oscillator frequency (F2), with the quartz oscillator frequencies (F1, F2) being synchronized. The invention is employed in connection with sampling PLLs for high-resolution radar systems with a controllable frequency oscillator, whose output signal is partially coupled out into a feedback branch and compared with reference frequencies in a phase comparator.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.