文档介绍：©Digital Vision Ltd.
Peter Waldow, Rüdiger Follmann,
Uwe Stehr, Adalbert Beyer
P. Waldow and A. Beyer are with Gerhard-Mercator-University Duisburg, Duisburg, Germany.
R. Follmann and U. Stehr are with IMST GmbH, Kamp-Lintfort, Germany.
70 ISSN 1527-3342/01/$©2001 IEEE June 2001
n the past decade, a rapidly increased demand in additional distortion. Furthermore, it can be increased
the development of microwave, millimeter-wave, by the filter function of the loop.
wireless, and munication systems can An integrated 70 GHz synthesizer is introduced and
be observed. There is hardly any other area of these discussed, and a microwave synthesizer module and its
techniques in which such enormous changes, like technical behavior is described. Several measured results
thoseI of work design, could be recognized. supported by analytical considerations show the applica-
Recently, the active devices and their technology have bility and the high performance of the PLLs introduced.
moved from classical solutions to solid-state performances
and their integration. Nowadays, the monolithic inte- How Does the PLL Technique Work?
grated circuits (MMIC) are ing predominant, and The PLL technique has had wide application in the past
classical circuit design has shifted to advanced. This en- to solve various problems occurring in frequency
ables improvement of the technic