VCO gain calibration technique for GSM/EDGE polar modulated transmitter

Author

Ahn, Hyung Ki ; Lee, Kun-Seok ; Yu, Hwayeal ; Oh, Hyoung-Seok ; Keum, Dongjin ; Park, Byeong-Ha

Author_Institution

Samsung Electron., Yongin-City

fYear

2008

fDate

June 17 2008-April 17 2008

Firstpage

383

Lastpage

386

Abstract

This paper describes a VCO gain calibration technique for the two-point modulation scheme using Delta-Sigma frequency synthesizer. The proposed technique enables PLL-based phase modulator to have wide bandwidth with good signal quality. A fully integrated GSM/EDGE polar modulated transmitter, implemented in a 0.13 mum CMOS process, is presented to show the feasibility of this calibration technique. After the calibration, it shows a margin of 8 dB to the spectrum mask at 400 kHz offset with EVM of 2%.

Keywords

3G mobile communication; CMOS integrated circuits; calibration; cellular radio; frequency synthesizers; phase modulation; radio transmitters; voltage-controlled oscillators; Delta-Sigma frequency synthesizer; GSM/EDGE polar modulated transmitter; PLL- based phase modulator; VCO gain calibration technique; size 0.13 mum; spectrum mask; two-point modulation scheme; Bandwidth; Calibration; Digital modulation; Frequency synthesizers; GSM; Low pass filters; Phase modulation; Radio transmitters; Signal processing; Voltage-controlled oscillators; EDGE; GSM; calibration; polar transmitter; twopoint modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits Symposium, 2008. RFIC 2008. IEEE

Conference_Location

Atlanta, GA

ISSN

1529-2517

Print_ISBN

978-1-4244-1808-4

Electronic_ISBN

1529-2517

Type

conf

DOI

10.1109/RFIC.2008.4561459

Filename

4561459