A novel 2-GHz band-pass delta modulator dedicated to wireless receivers

Author

Naderi, Ali ; Sawan, Mohamad ; Savaria, Yvon

Author_Institution

Lab. of Polystim Neurotechnologies, Ecole Polytechnique de Montreal, Que.

fYear

2006

fDate

21-24 May 2006

Lastpage

1903

Abstract

This paper describes a sub-sampling delta modulator operating at giga Hertz range to capture radio frequency signals. Down-conversion to low-IF is achieved by sub-sampling with a 1-bit quantizer. It presents higher bandwidth and SNR than those of the state-of-the-art sub-sampling modulators. Input carrier frequency can be followed over a wide range by controlling the sampling rate. Center frequency of the band-pass filters, which is placed at IF, is independent of input carrier frequency. A SNR higher than 55 dB is expected for a 2 MHz bandwidth signal modulated at 2-GHz frequency when the sampling rate is set to 990 mega samples per second

Keywords

band-pass filters; delta modulation; quantisation (signal); radio receivers; signal sampling; 2 GHz; 2 MHz; band-pass delta modulator; down-conversion; radio frequency signal; sub-sampling quantizer; wireless receivers; Bandwidth; CMOS technology; Delta modulation; Frequency conversion; RF signals; Radio frequency; Receivers; Sampling methods; Signal design; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on

Conference_Location

Island of Kos

Print_ISBN

0-7803-9389-9

Type

conf

DOI

10.1109/ISCAS.2006.1692981

Filename

1692981