Title :
Analysis and implementation of a frequency synthesizer with low phase noise and wide tuning range for health care applications
Author :
Wen-Cheng Lai ; Jhin-Fang Huang ; Nai-Lun Chen ; Chieh-Wen Shih
Author_Institution :
Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan
Abstract :
A frequency synthesizer with low phase noise, low chip area and low power dissipation operating at 5.2 GHz band is provide and processing 0.18-um CMOS from TSMC. The proposed design can be used for healthcare applications such as body sensor network. The proposed frequency synthesizer with a cross-coupled negative-resistance multiple-gated circuit (NRMGC) LC-tank voltage-controlled oscillator (VCO) which uses multiple-gate transistors achieves low phase noise. At the supply voltages of 0.9 V for analog circuits and1.8 V for digital circuits, the provide prototype achieves a wide frequency tuning range from 4.31 to 5.27 GHz relevant to 20.4%, a phase noise of -107.61 dBc/Hz at 1 MHz frequency offset from 5.23 GHz, a overall power consumption of 25.4 mW and a spectrum output power of -23.03 dBm. The chip area including pads only occupies 0.739 (0.825 × 0.896) mm2.
Keywords :
CMOS analogue integrated circuits; CMOS digital integrated circuits; biomedical communication; biomedical equipment; frequency synthesizers; health care; microwave transistors; phase noise; voltage-controlled oscillators; CMOS; NRMGC-VCO; TSMC; analog circuits; body sensor network; cross-coupled negative-resistance multiple-gated circuit LC-tank voltage-controlled oscillator; digital circuits; frequency 4.31 GHz to 5.27 GHz; frequency synthesizer; healthcare applications; low chip area; low power dissipation; low-phase noise; multiple-gate transistors; power consumption; CMOS integrated circuits; Frequency synthesizers; Phase noise; Transistors; Tuning; Voltage-controlled oscillators; Low Phase Noise; Wide Tuning Range; frequency Synthesize;
Conference_Titel :
Biomedical Engineering and Informatics (BMEI), 2014 7th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4799-5837-5
DOI :
10.1109/BMEI.2014.7002842