An X-band Transmission Line Based CMOS VCO with FM Modulation

Author

Wang, Sen ; Wu, Hsien-Shun ; Tzuang, Ching-Kuang C.

Author_Institution

Graduate Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei

fYear

2007

Firstpage

139

Lastpage

141

Abstract

An X-band voltage-controlled oscillator (VCO with frequency modulation (FM) capability is realized in a 0.18mum 1P6M CMOS technology. The characteristics of the VCO modulated by a 100KHz triangular waveform are presented and investigated. The passive components of the VCO are implemented by two-dimensional (2-D) complementary-conducting strip transmission lines (CCS TLs), varactors and metal-oxide-metal (MOM) capacitors for substrate coupling consideration. The measured VCO with free running phase noise of -83.2 dBc/Hz at 100KHz offset from the carrier. The compact VCO chip size is 330 times450mum² excluding pads. Furthermore, the modulation bandwidth is up to 400MHz of the proposed VCO with direct FM modulation which could improve range resolution in a radar system

Keywords

CMOS integrated circuits; MMIC oscillators; frequency modulation; transmission lines; varactors; voltage-controlled oscillators; 0.18 micron; 100 kHz; 2D complementary-conducting strip transmission lines; 400 MHz; CMOS technology; MMIC oscillators; X-band; frequency modulation; metal-oxide-metal capacitors; triangular waveform; voltage-controlled oscillator; CMOS technology; Capacitors; Carbon capture and storage; Frequency modulation; Message-oriented middleware; Strips; Transmission lines; Two dimensional displays; Varactors; Voltage-controlled oscillators; Voltage controlled oscillator; cmos; frequency modulation; transmission line;

fLanguage

English

Publisher

ieee

Conference_Titel

Silicon Monolithic Integrated Circuits in RF Systems, 2007 Topical Meeting on

Conference_Location

Long Beach, CA

Print_ISBN

0-7803-9765-7

Electronic_ISBN

0-7803-9765-7

Type

conf

DOI

10.1109/SMIC.2007.322800

Filename

4117345