Ghannouchi, Fadhel M.Rahman, Sharif Abdur2014-01-302014-03-152014-01-302014Rahman, S. A. (2014). Delta-Sigma Modulator for Wideband and Multi-Band Radio Systems (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/25547http://hdl.handle.net/11023/1335The proliferation of modern communication systems places stringent requirements on analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) to operate on wideband signals while being power and resource efficient. In this thesis, the utilization of delta-sigma modulators for wideband and multi-band applications in both the receiver and transmitter is addressed. The first model proposes a low-complexity frequency band decomposition-based parallel DSM ADC architecture which lowers the resource consumption considerably compared to the conventional QMF-FBD ADC and maintains an acceptable SNDR. An FPGA implementation and resource estimation of the proposed model was performed as a proof of concept. The second model presents a concurrent dual band DSM architecture for spectrum aggregation transmitter application and provides a comprehensive analysis of step-by-step design process. The quantization noise is shaped in this architecture enabling concurrent transmission of two signals with low in-band noise interference. Simulation was performed with two carrier frequency bands of LTE signals as proof of theory.engUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.Engineering--Electronics and ElectricalDelta-Sigma ModulationSpectrum AggregationParallel ProcessingFrequency Band DecompositionTransceiverAnalog-to-Digital ConverterDigital-to-Analog Convertermaster thesis10.11575/PRISM/25547