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A single-chip frequency synthesizer using a 0.3 micron enhancement-depletion HEMT-process is presented. The circuit is a prototype for the local oscillator source of future low cost millimeter wave systems, such as intelligent cruise control radars (76 GHz) or very high speed wireless LANs (60 GHz). It integrates all the components needed to generate a phase locked signal around 18 GHz, i.e. the VCO,...
In this paper we report about the signal and noise performance of a VCO and a PLL. An accurate method to calculate the phase noise is outlined. The characteristics of the PLL are calculated. The calculated values are compared to the measured results obtained with an IC realized in BICMOS technology.
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