Abstract
This paper demonstrates a low-cost 2.4 GHz single-ended frequency divider with the divide-by-value from 256 to 271 in the standard 0.35-μm 2P4M CMOS technology. This frequency divider is composed of a synchronous current mode logic divide-by-4/5 prescaler, an asynchronous true single-phase-clock toggle flip-flops divide-by-64 divider, and a digital control circuitry. This proposed divider is single-ended and compatible to the single-ended low-phase-noise Colpitts VCO. The operating frequency range of the divider is from 400 to 2.9 GHz. Most of the input sensitivity levels are about −10 dBm and the lowest level is −25 dBm at 2.4 GHz. Its core power consumption is about 28 mW. The chip size is 1.2 × 0.7 mm2. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2096–2100, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21876
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