Ch. Meliani , F. Lenk and W. Heinrich

Published in:

IEEE MTT-S Int. Microw. Symp. Dig., San Francisco, USA, Jun. 11-16, ISBN 0-7803-9541-7, pp. 1801-1804 (2006).

Abstract:

24 GHz VCOs and frequency dividers with very low power consumption are presented. The circuits are realized as GaAs HBT MMICs. They comprise a VCO with high efficiency >17% and 12% tuning range at only 18 mW DC consumption as well as several frequency dividers. In order to minimize power consumption, the latter use the injection-locked frequencydivider (ILFD) concept. Divider ratios of 2 and 4 are realized, power consumption as low as 25 mW for a divider-by-2 is achieved. This demonstrates the capabilities of the analog concept in realizing dividers for mm-wave frequencies at DC consumption levels far below their digital counterparts.

Keywords:

VCO, Low Power, Injection Locked Frequency Divider.

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