Search for dissertations about: "quadrature bandpass filtering"
Found 4 swedish dissertations containing the words quadrature bandpass filtering.
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1. Generalized Bandpass Sampling Receivers for Software Defined Radio
Abstract : Based on different sampling theorem, for example classic Shannon’s sampling theorem and Papoulis’ generalized sampling theorem, signals are processed by the sampling devices without loss of information. As an interface between radio receiver front-ends and digital signal processing blocks, sampling devices play a dominant role in digital radio communications. READ MORE
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2. Wideband Sigma-Delta Modulators
Abstract : Sigma-delta modulators (SDM) have come up as an attractive candidatefor analog-to-digital conversion in single chip front ends thanks to the continuousimproving performance. The major disadvantage is the limited bandwidthdue to the need of oversampling. READ MORE
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3. Direct RF sampling receivers for wireless systems in CMOS technology
Abstract : The fast development of wireless communication systems asks for more flexible and more cost-effective radio architectures. A long term goal is a software defined radio, where communication standards are chosen by reconfiguration of hardware. READ MORE
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4. Selected Applications of Switched Capacitor Circuits : RF N-Path Filters and ΣΔ Modulators
Abstract : Electronic circuits based on switches and capacitors have been used in various applications for several decades. The common switched capacitor (SC) circuits have made their career primarily in analog filters and data converters due to high immunity to capacitance mismatch in integrated circuit (IC) technologies. READ MORE