Sökning: "ΣΔ-Modulators"
Hittade 3 avhandlingar innehållade ordet ΣΔ-Modulators.
1. Selected Applications of Switched Capacitor Circuits : RF N-Path Filters and ΣΔ Modulators
Sammanfattning : 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. LÄS MER
2. Quantization and Noise-Shaped Coding for High Efficiency Transmitter Architectures
Sammanfattning : Three driving parameters in the development of transmitter technologies for wireless communication today is: energy efficiency, flexibility and footprint reduction. This thesis investigates the use of 1-bit oversampled signal representation, mainly as a power efficiency enhancement technique for the transmitter, but also as a path toward reduced footprint and increased flexibility. LÄS MER
3. On High-Speed Digital-to-Analog Converters and Semi-Digital FIR Filters
Sammanfattning : High-speed and high-resolution digital-to-analog converters (DACs) are vital components in all telecommunication systems. Radio-frequency digital-to-analog converter (RFDAC) provides high-speed and high-resolution conversion from digital domain to an analog signal. RFDACs can be employed in direct-conversion radio transmitter architectures. LÄS MER