Title :
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
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;
Conference_Titel :
Circuits and Systems (ISCAS), 2011 IEEE International Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4244-9473-6
Electronic_ISBN :
0271-4302
DOI :
10.1109/ISCAS.2011.5937768
