论文信息 - All-digital RF signal generation for software defined radio

All-digital RF signal generation for software defined radio

Digital generation of radio-frequency signals is a key concept of software defined radios. This paper presents a digital transmitter chain including a very high-speed delta-sigma modulator. It comprises also baseband processing, sample rate conversion, digital upconverter and output stages (switching- mode amplifier and BAW filters). About 74 dB of ACLR (adjacent channel leakage ratio) is obtained on the 7.8 GS/s output of the delta-sigma modulator for the WCDMA standard.

[1] Kari Halonen,et al. A digital modulator with bandpass delta-sigma modulator , 2004 .

[2] Tim Hentschel. Sample rate conversion in software configurable radios , 2002 .

[3] Masashi Shimanouchi,et al. An approach to consistent jitter modeling for various jitter aspects and measurement methods , 2001, Proceedings International Test Conference 2001 (Cat. No.01CH37260).

[4] C. Enz,et al. A SiGe:C BiCMOS WCDMA zero-IF RF front-end using an above-IC BAW filter , 2005, ISSCC. 2005 IEEE International Digest of Technical Papers. Solid-State Circuits Conference, 2005..

[5] Lawrence E. Larson,et al. Linear high-efficiency microwave power amplifiers using bandpass delta-sigma modulators , 1998 .

[6] Marko Kosunen,et al. A GSM/EDGE/WCDMA modulator with on-chip D/A converter for base stations , 2002 .

[7] R. Schreier,et al. Delta-sigma data converters : theory, design, and simulation , 1997 .