A WiMedia-Compliant UWB Transceiver in 65nm CMOS

Ultra-Wideband RF Transceive

“…Both MB-OFDM (Ranjan & Larson, 2006;Zheng H et al, 2007;Bergervoet et al, 2007;Beek et al, 2008) and DS-UWB (Zheng Y. et al, 2007(Zheng Y. et al, , 2008 are carrier-modulated systems, where a mixer is used to up/down convert the radio frequency (RF) signal, therefore it requires local oscillator (LO) synthesis. On the other hand, IR-UWB (Yang, C. et al, 2005 ;) is a carrier-less pulse-based system, therefore, we can eliminate the fast hopping LO synthesis, thus reducing the complexity and power consumption of the entire radio.…”

Ultra Wideband RF Transceiver Design in CMOS Technology

“…Both MB-OFDM (Ranjan & Larson, 2006;Zheng, H. et al, 2007;Bergervoet et al, 2007;Beek et al, 2008) and DS-UWB (Zheng, Y. et al, 2007(Zheng, Y. et al, , 2008 are carrier-modulated systems, where a mixer is used to up/down convert the baseband (BB)/radio frequency (RF) signal, therefore requiring local oscillator (LO) synthesis. The main difference between these two systems is that MB-OFDM systems are dealing with continuous ultra-wideband modulated signals while DS-UWB systems are transmitting discrete short pulses which also occupy ultra-wide bandwidth.…”

“…The main architectures of MB-OFDM UWB transceivers can be categorized into superheterodyne transceivers (Ranjan & Larson, 2006;Zheng, H. et al, 2007) and directconversion transceivers (Bergervoet et al, 2007;Beek et al, 2008), which are quite similar as those traditional narrow-band RF transceivers.…”

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

“…10(b). The transimpedance Z L,msp of the modified shunt-peak load is given in (9) To simplify the analysis, resistor and capacitor values are assumed identical, i.e. R 1 = R 2 = R and C 1 = C 2 = C. The inductor L is replaced with…”