Multi-Standard CMOS Wireless Receivers

Wireless communications is witnessing tremendous growth with proliferation of different standards covering wide, local and personal area networks (WAN, LAN and PAN). Contemporary trends call for designs that allow: smooth migration to future generations of wireless standards with higher data rates for multimedia applications; convergence of wireless services allowing access to different standards from the same wireless device; and cost effective design solutions for intercontinental roaming. This requires designs that work across multiple wireless standards, can easily be reused, achieve maximum hardware share at minimum power consumption levels particularly for mobile battery-operated devices. While serious efforts are underway to develop highly integrated solutions for digital basebands covering multiple standards, emerging multi-standard, multi-band wireless devices use "stacked" transceivers, that is, separate transceivers for different standards. This represents a major bottleneck in attempting to achieve higher levels of integration and reduce the bill of material for a multi-standard wireless device. Development of radio architectures and mixed-signal design solutions that support multiple standards is therefore needed. This is one of the main objectives of this book. It covers both the analysis and design aspects of CMOS radio receivers with primary focus on receivers for mobile terminals. The subject of multi-standard data converter design for base stations is also covered. The book also details a complete analysis of a multi-standard receiver chain from the antenna to the data converter establishing the design specifications of all blocks in both the radio and mixed-signal parts. The specifications are conveniently tabulated throughout the book and span a level of details from the noise figure and linearity requirements of RF blocks down to such circuit details as, for example, DC gain, settling behaviour, noise and matching requirements of amplifiers (OTAs) in the data converter.