Abstract
Ultra-wideband (UWB) is an emerging broadband wireless technology enabling data rates up to Mbps. This paper provides an overview of recent design approaches for several circuit functions that are required for the implementation of multiband OFDM UWB transceivers. A number of transceiver and synthesizer architectures that have been proposed in literature will be reviewed. Although the technology focus will be on CMOS, also some design techniques implemented in BiCMOS technologies will be presented.
Highlights
Short-range communication systems (so-called wireless personal area network (WPAN) systems) with ranges of up to 10 m are becoming popular in replacing cables and in enabling new consumer applications
The emphasis of this paper will be on progress that is made on implementations in CMOS technology, some BiCMOS transceivers and circuits will be discussed as well
The circuit has been fabricated in a 0.18 μm SiGe BiCMOS process and achieves an noise figure (NF) of 3.3–4.1 dB and a conversion gain of 52 dB
Summary
Short-range communication systems (so-called wireless personal area network (WPAN) systems) with ranges of up to 10 m are becoming popular in replacing cables and in enabling new consumer applications Examples such as Bluetooth and ZigBee, which operate in the 2.4 GHz ISM band, have a limited data rate, typically about 1 Mbps, which is insufficient for many applications like fast transfer of large files (e.g., wireless USB) and high-quality video streaming. Several proposals have since been presented to realize a short-range high data rate communication link At present, both direct-sequence impulse communication and multiband OFDM UWB systems are under consideration as a standard. The emphasis of this paper will be on progress that is made on implementations in CMOS technology, some BiCMOS transceivers and circuits will be discussed as well
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