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This work proposes low power non-recursive decimation filters in a GSM (global system for mobile communication) and UMTS (universal mobile telecommunications system) dual mode sigma delta ADC. The proposed technique is an alternative to the standard CIC (cascaded integrator-comb) approach with a decimation factor of m-th power of two and m-th power of three. 70% to 80% power consumption can be saved...
This paper describes a decimation processor for a dual-mode sigma-delta ADC for GSM and UMTS mobile standards. Partly contradictory requirements like high dynamic range and low bandwidth for GSM and vice versa for UMTS need decimation factors of M=144 (GSM) and M=8 (UMTS). A multi-rate filter architecture, which allows best hardware re-use for both mobile standards, is selected. Since the ADC is to...
This work proposes an ASIC implementation of low power non-recursive decimation filters in a GSM and UMTS dual mode sigma delta ADC. An alternative that saves 70% to 80% power consumption to the standard CIC approach is discussed here with a decimation factor of m-th power of two and m-th power of three. More research is done to find the break-even point between power consumption and silicon area...
Incremental magnetic field sensors are frequently used in automotive applications for crankshaft and camshaft position measurements. Highest possible phase accuracy and disturbance immunity (air gap and temperature variations, noise) are the primary performance requirements for such sensor systems. An analog signal is generated from a magnetic field sensor and the position information is obtained...
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