A LP/HP UMTS/GSM ΣΔ ADC suited for a Zero-IF/Low-IF receiver

Author

Jabbour, Chadi ; Khushk, Hasham ; Fakhoury, Hussein ; Nguyen, Van Tam ; Loumeau, Patrick

Author_Institution

LTCI, TELECOM ParisTech, Paris, France

fYear

2011

fDate

15-18 May 2011

Firstpage

1125

Lastpage

1128

Abstract

This paper presents the design of a reconfigurable Delta Sigma Analog to Digital Converter (ADC). Its main degree of liberty is the choice of the noise shaping among low pass and high pass. This reconfiguration parameter allows it to be adapted for both the Low- IF and the Zero-If receiver architectures. The ADC is GSM/UMTS compliant. It was designed in a 1.2 V 65 nm CMOS process. Electrical simulation results showed a SNDR of 84 dB for the GSM mode with a Low-IF frequency of 19.2 MHz and a SNDR of 77.4 dB for the UMTS at DC.

Keywords

analogue-digital conversion; delta-sigma modulation; high-pass filters; low-pass filters; radio receivers; LP/HP UMTS/GSM ΔΣ ADC; Zero-IF/Low-IF receiver; high pass; low pass; noise shaping; reconfigurable delta sigma analog to digital converter; 3G mobile communication; CMOS integrated circuits; GSM; Modulation; Noise; Receivers; Switches; Analog to Digital Converter; Delta Sigma; Low-IF/Zero-IF receiver; Reconfiguration;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2011 IEEE International Symposium on

Conference_Location

Rio de Janeiro

ISSN

0271-4302

Print_ISBN

978-1-4244-9473-6

Electronic_ISBN

0271-4302

Type

conf

DOI

10.1109/ISCAS.2011.5937768

Filename

5937768