A Single-PLL UWB Frequency Synthesizer Using Multiphase Coupled Ring Oscillator and Current-Reused Multiplier

作者：Chang Jung Yu^*; Fan Che Wei; Liang Che Fu; Liu Shen Iuan

来源：IEEE Transactions on Circuits and Systems II-Express Briefs, 2009, 56(2): 107-111.

DOI：10.1109/TCSII.2008.2010181

• Current reused
• multiply-by-1.5 circuit
• phase-locked loop (PLL)
• ring oscillator ultrawideband (UWB)

A single phase-locked loop (PLL) frequency synthesizer for a Mode-1 multiband orthogonal frequency-division multiplexing (MB-OFDM) ultrawideband (UWB) system is realized in 0.13-mu m CMOS. A current-reused multiply-by-1.5 circuit and a multiphase coupled ring oscillator are adopted to reduce the power consumption. For a 4.488-GHz signal, the measured image sideband is -40 dBc. The measured switching time from 3.342 to 4.488 GHz is 1.5 ns. The area is 0.85 X 0.9 mm(2) and the power is 31.2 mW for a 1.2-V supply voltage.

• 出版日期2009-2
• 单位中国科学院电工研究所