Title :
A Gated VCO for 10Gb/s PON Systems in 0.18µm CMOS
Author :
Gu, Gaowei ; Zhu, En ; Lin, Ye
Author_Institution :
Inst. of RF& OE-ICs, Southeast Univ., Nanjing, China
Abstract :
A 5GHz Gated VCO for burst-mode operation in 10Gbps GPON and EPON systems is presented. The GVCO consists of four stages of XNOR/XOR cell with voltage-controlled delays, and aligns output clock to burst data within 2 bits time. The GVCO has a tuning range from 4.4GHz to 6.2GHz. The phase noise of the GVCO in steady state circuit is -105dBc/Hz at 5MHz offset. The circuit is implemented in SMIC 0.18μm CMOS process, occupies an area of 425*480μm2. The power consumption is 35mW (with I/O buffers).
Keywords :
CMOS integrated circuits; clock and data recovery circuits; logic circuits; microwave oscillators; passive networks; phase noise; voltage-controlled oscillators; EPON system; GPON system; SMIC CMOS process; XNOR-XOR cell; clock-and-data recovery; frequency 4.4 GHz to 6.2 GHz; gated VCO; passive optical networks; phase noise; power 35 mW; size 0.18 μm; voltage-controlled delays; CMOS process; Circuit optimization; Clocks; Delay effects; EPON; Passive optical networks; Phase noise; Steady-state; Voltage; Voltage-controlled oscillators; NXOR; burst-mode; gated voltage-controlled oscillator (GVCO); passive optical network (PON); variable delay cell;
Conference_Titel :
Future Networks, 2010. ICFN '10. Second International Conference on
Conference_Location :
Sanya, Hainan
Print_ISBN :
978-0-7695-3940-9
Electronic_ISBN :
978-1-4244-5667-3
DOI :
10.1109/ICFN.2010.94
