This thesis proposes a low-IF receiver architecture suitable for the realization of single-chip receivers. To alleviate the image-rejection requirements of the front-end filters an oversampling complex discrete-time ΔΣ ADC with a signal-transfer function that achieves a significant filtering of interfering signals is proposed. A filtering ADC reduces the complexity
of the receiver by minimizing the requirements of analog filters in the IF digitization
path. Discrete-time ΔΣ ADCs have precise resonant frequency and clock frequency ratios and, hence, do not require the calibration or tuning that is necessary in the case of continuous-time ΔΣ modulator implementations. This feature makes the proposed discrete-
time ΔΣ ADC ideal for multistandard receiver applications.
| Identifer | oai:union.ndltd.org:TORONTO/oai:tspace.library.utoronto.ca:1807/24375 |
| Date | 21 April 2010 |
| Creators | Pandita, Bupesh |
| Contributors | Martin, Kenneth |
| Source Sets | University of Toronto |
| Language | en_ca |
| Detected Language | English |
| Type | Thesis |
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