Design of High-Q Varactors for Low-Power Wireless Applications Using a Standard CMOS Process

New applications such as wireless integrated network sensors (WINS) require radio-frequency transceivers consuming very little power compared to usual mainstream applications, while still working in the ultra-high-frequency range. For this kind of applications, the LC-tank-based local oscillator remains a significant contributor to the overall receiver power consumption. This statement motivates the development of good on-chip varactors available in a standard process. This paper describes and compares the available solutions to realize high-Q, highly tunable varactors in a standard digital CMOS submicrometer process. On this basis, quality factors in excess of 100 at 1 GHz, for a tuning ratio reaching two, have been measured using a 0.5-μm process.


Published in:
IEEE Journal of Solid-State Circuits, 35, 3, 337-345
Year:
2000
ISSN:
00189200
Keywords:
Other identifiers:
Scopus: 2-s2.0-0033904349
Laboratories:




 Record created 2010-06-24, last modified 2018-09-13


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