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This paper investigates and reports on the susceptibility of commercial voltage references to electromagnetic interference (EMI). Two separate scenarios have been considered. In the first experiment, the interferences are directly injected onto the power supply lines of each voltage reference. In the second measurement, EMI is capacitively coupled to all the pins of the voltage reference under test,...
PMBus™ has done an excellent job of standardizing the way digital controlled power supplies communicate. However, this standardization has not included many of the traditional design requirements present in power supplies. A standardization proposal for the parameterization of power supply design requirements into a PMBus™ format is made. Benefits to the power supply design engineer and the host system...
This paper demonstrates how the direct power injection (DPI) and near-field scan (NFS) methods can be used to investigate the propagation of electromagnetic waves inside an integrated circuit (IC). In this study, a two-dimensional near-field cartography of the magnetic field generated by the circuit under test is achieved either in normal operation or while applying DPI into the Vdd pin of the IC,...
This paper describes a comparative analysis between two topologies of operational amplifiers to design a 40 MS/s 12-bit pipeline analog to digital converter (ADC). The analysis includes AC and transient simulation to select the proper topology. This ADC is implemented in a 0.35 mum AMS CMOS technology with 3.3 V single power supply. The capacitors and selected operational amplifiers were scaled for...
This paper provides a short review of radio frequency/microwave power amplifiers (PAs) and their critical role in a modern satellite communication system. Authorspsila original design contributions are also highlighted.
A high intercept points, cost-effective, and power-efficient switching FET double balanced mixer (DBM) is reported. The Switching FET DBM demonstrated in this work offers input intercept points (IIP3) and conversion loss typically 44 dBm and 8.5 dB respectively with 15 dBm LO power for the frequency band (RF: 900-2150 MHz, LO: 850-1950 MHz, IF: 50-200 MHz). The measured interport isolation is typically...
This paper describes the high-frequency characteristics of a multilayered planar transformer consisting of two planar coils and Co-Fe amorphous magnetic films. The parameters of transformer operation obtained by finite element method (FEM) calculations are compared with measured values. The analysis shows that characteristic evaluation is useful for a simple understanding of the operation of a transformer...
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