Wide-Band CMOS Circuit Design Techniques for RF Amplifier and Ring VCO

Author

Ishihara, Noboru ; Ujiie, Ryuichi ; Shibata, Kenichi ; Sato, Hisayasu

Author_Institution

Grad. Sch. of Eng., Gunma Univ., Kiryu

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

4

Abstract

RF CMOS circuit design techniques for ultrawideband (UWD) applications are presented. In the RF amplifier design, a combination of a constant-k filter and a resistive shunt feedback circuit is suggested for wide-band operation. We report that a circuit integrated by using 0.13-mum CMOS process technology has achieved an operation bandwidth from 2 to 5.8 GHz with a peak gain of 9 dB. In a ring VCO, a frequency tuning technique that controls the load resistance of the inverter instead of conventional current controlling, has been successfully used to oscillate from 1.8 to 7 GHz.

Keywords

CMOS integrated circuits; UHF amplifiers; circuit tuning; integrated circuit design; invertors; microwave amplifiers; microwave oscillators; voltage-controlled oscillators; wideband amplifiers; RF amplifier; VCO; bandwidth 2 GHz to 5.8 GHz; frequency 1.8 GHz to 7 GHz; frequency tuning technique; gain 9 dB; inverters; load resistance; resistive shunt feedback circuit; ultrawideband applications; wideband RF CMOS circuit design techniques; CMOS process; CMOS technology; Circuit synthesis; Feedback circuits; Filters; Integrated circuit technology; Radio frequency; Radiofrequency amplifiers; Ultra wideband technology; Voltage-controlled oscillators; RF-CMOS; amplifier; ring VCO; wide-band;

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.2007.4554649

Filename

4554649