A 2-mW low-power 0.13-μm CMOS VCO and LO generator for GPS applications

✍ Scribed by Young-Jin Kim; Dong-Hyun Beak

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 337 KB
• Volume: 50
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.23697

✦ Synopsis

Abstract

A low‐power GPS local generator using a 0.13‐μm CMOS process is presented. The complementary CMOS VCO, whose power consumption is about 0.6 mW, achieves the wide tuning range of 700 MHz and phase noise of −116 to −120 dBc/Hz at 1‐MHz frequency offset. To lower VCO gain and increase tunable control voltage range, a K~VCO~ linearizer is introduced by adopting multiple reference bias configurations. Using low‐power inverting amplifier, the power of local generator is minimized to below 2 mW in spite of providing 800 mV~pp~ swing voltage to passive mixer from 1.2 V supply. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2362–2365, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23697