Title :
A Multi-Band Current-Reused VCO for 2.5 GHz and 3.4 GHz WiMAX Applications
Author :
Liu, Chien-Hsuan ; Wang, Ruey-Lue ; Chen, Chia-Yu ; Su, Yan-Kuin
Author_Institution :
Inst. of Microelectron., Nat. Cheng Kung Univ., Tainan
Abstract :
In this paper, a wide tuning range switched current-reused VCO for 2.5 GHz and 3.4 GHz WiMAX applications is presented. The frequency bands consist of eight switched sub-bands and cover 2.438-2.971 GHz and 3.104-3.786 GHz. The measured phase noise at 100-kHz and 1-MHz offset frequencies are -101.47 and -119.28 dBc/Hz at lower band and -103.99 and 122.28 dBc/Hz at higher band. With 1.5V voltage supply, the power consumption of the VCO is 2.886 mW. This circuit was fabricated by TSMC 0.18 m CMOS process.
Keywords :
CMOS integrated circuits; UHF oscillators; WiMax; microwave oscillators; phase noise; voltage-controlled oscillators; CMOS process; WiMAX; frequency 2.5 GHz; frequency 3.4 GHz; multiband current-reused VCO; offset frequencies; phase noise; power consumption; size 0.18 mum; Energy consumption; Frequency measurement; Noise measurement; Phase measurement; Phase noise; Power supplies; Tuning; Voltage; Voltage-controlled oscillators; WiMAX;
Conference_Titel :
Innovative Computing Information and Control, 2008. ICICIC '08. 3rd International Conference on
Conference_Location :
Dalian, Liaoning
Print_ISBN :
978-0-7695-3161-8
Electronic_ISBN :
978-0-7695-3161-8
DOI :
10.1109/ICICIC.2008.47
