A 1V Wide Tuning Range VCO for UHF DTV Tuner

Author

Yu, Yueh-Hua ; Su, Feng-Kuan ; Chen, Yi-Jan Emery ; Heo, Deukhyoun

Author_Institution

Grad. Inst. of Electron. Eng., Nat. Taiwan Univ., Taipei

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

4

Abstract

This paper presents a low power wide tuning range 0.18 mum CMOS voltage-controlled oscillator. The VCO is oscillating at 1.5 times of the LO frequency to reduce the size of tank inductor. Capacitor bank switching is adopted to increase the VCO tuning range. To ensure oscillation at low frequency band, the bias current is adjusted automatically with respect to oscillation frequency. The frequency coverage of the CMOS VCO is from 675 MHz to 1275 MHz, and the tuning range is 62%. The operation supply voltage and power consumption of the VCO are 1V and 5 mW, respectively. The measured phase noise is - 98 dBc/Hz at 100 kHz offset.

Keywords

CMOS integrated circuits; UHF oscillators; circuit tuning; digital television; phase noise; television receivers; voltage-controlled oscillators; CMOS voltage-controlled oscillator; LO frequency; UHF DTV tuner; VCO; capacitor bank switching; frequency 100 kHz; frequency 675 MHz to 1275 MHz; phase noise; power 5 mW; size 0.18 micron; tank inductor; voltage 1 V; wide tuning range; Capacitors; Digital TV; Energy consumption; Frequency; Inductors; Power supplies; Tuners; Tuning; Voltage; Voltage-controlled oscillators; CMOS; DTV Tuner; UHF; VCO; low power; low voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0748-4

Electronic_ISBN

978-1-4244-0749-1

Type

conf

DOI

10.1109/APMC.2007.4554647

Filename

4554647