System Design for Direct RF-to-Digital $\Delta\Sigma$ Receiver
| Autor: | David Duperray, Chadi Jabbour, Pascal Triaire, Minh Tien Nguyen, Seyed Majid Homayouni, Van Tam Nguyen |
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| Rok vydání: | 2016 |
| Předmět: |
Radio receiver design
business.industry Computer science 020208 electrical & electronic engineering Electrical engineering 020206 networking & telecommunications 02 engineering and technology Delta-sigma modulation Low-noise amplifier Noise GSM 0202 electrical engineering electronic engineering information engineering Baseband Electronic engineering Wireless Systems design Electrical and Electronic Engineering business |
| Zdroj: | IEEE Transactions on Circuits and Systems I: Regular Papers. 63:1758-1770 |
| ISSN: | 1558-0806 1549-8328 |
| DOI: | 10.1109/tcsi.2016.2589542 |
| Popis: | The Direct RF-to-Digital $\Delta\Sigma$ receiver has emerged as an attractive solution for multi-band multi-standard wireless applications. This architecture is a direct RF to baseband digitizer with RF feedback from baseband to RF stages. The presence of the RF blocks such as the low noise amplifier and down-conversion mixer inside the loop filter significantly relaxes their linearity requirements and also improves the noise transfer function of the loop filter. However, the RF feedback poses several challenges, especially making the design methodology more complex. In contrast to classical receiver architectures, the blocks of the Direct RF-to-Digital $\Delta\Sigma$ receiver cannot be designed, analyzed, and simulated independently. Besides, conventional design methodologies for $\Delta\Sigma$ Modulators cannot be applied for this kind of receiver due to the presence of the RF blocks and the RF feedback inside the loop. This paper presents a new design methodology suited for this family of receivers. The proposed methodology covers simulation approaches, system design, and non-ideality impacts on the receiver. A design example of a multi-band multi-standard receiver for GSM/WCDMA/LTE is considered throughout the paper to demonstrate this design methodology. |
| Databáze: | OpenAIRE |
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