A dual-band direct-conversion RF front-end for WiMedia UWB receiver

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This paper describes a direct-conversion RF front-end designed for a dual-band WiMedia UWB receiver. The front-end operates in band group BG1 and BG3 frequencies. It includes multi-stage LNAs, down-conversion mixers, a polyphase filter for quadrature local oscillator (LO) signal generation, and LO buffers. The UWB receiver is targeted for a mobile handset, where several other radios can be simultaneously on. Therefore, special attention was paid on minimizing the interference from different wireless systems. The front-end achieves approximately 26-dB gain and 4.9-5.6-dB noise figure (NF) across three sub-bands of BG1. In BG3 mode it obtains 23-26-dB gain and 6.9-7.7-dB NF. The front-end consumes 48.1 and 42.7 mA from a 1.2-V supply voltage in BG1 and BG3 operation modes, respectively. The chip was implemented in a 0.13-μm CMOS.


Original languageEnglish
Pages (from-to)117-128
Number of pages12
JournalAnalog Integrated Circuits and Signal Processing
Issue number2
Publication statusPublished - May 2009
MoE publication typeA1 Journal article-refereed

    Research areas

  • CMOS, Front-end, Interferers, Mobile applications, Radio frequency, UWB

ID: 3247027