Low phase noise CMOS VCO for UHF RFID reader system

Author

Kim, Min-su ; Ryu, Seonghan ; Jung, Sung-chan ; Oh, Junhee ; Yang, Youngoo

Author_Institution

Sch. of Inf. & Commun. Eng., SungKyunKwan Univ., Suwon, South Korea

fYear

2011

Firstpage

777

Lastpage

780

Abstract

This paper presents an optimized LC-VCO using an NMOS transistor, having low parasitic components and a customized inductor with a high quality factor, for UHF RFID reader systems. For the UHF RFID reader system-on-chips, a VCO with a wide frequency tuning range of more than 120MHz and low phase noise characteristics is required. Based on the low-cost CMOS process, the optimized NMOS VCO was designed and implemented. From the experimental results, the optimized LC-VCO exhibited a wide-tuning range of 415MHz, from 1.508 to 1.923GHz, and a low phase noise of -120.78dBc/Hz at a frequency offset of 200KHz. An FOM of -184.1 was achieved.

Keywords

CMOS integrated circuits; MOSFET; radiofrequency identification; voltage-controlled oscillators; NMOS transistor; UHF RFID reader system-on-chips; customized inductor; high quality factor; low parasitic components; low phase noise CMOS VCO; low phase noise characteristics; low-cost CMOS process; optimized LC-VCO; optimized NMOS VCO; CMOS integrated circuits; Inductors; MOS devices; Phase noise; Radiofrequency identification; Tuning; Voltage-controlled oscillators; FOM; LC oscillator; NMOS VCO; UHF Radio Frequency Identification; Voltage Controlled Oscillator;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2011 Asia-Pacific

Conference_Location

Melbourne, VIC

Print_ISBN

978-1-4577-2034-5

Type

conf

Filename

6173866