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In this paper, the high-frequency coupling from electromagnetic fields to cables is studied and this under (i) plane-wave conditions representing a susceptibility test in a semi-anechoic room and (ii) random wave conditions representing a more realistic environment with many reflections. Two set-ups are considered. First, a simple wire above an infinite ground plane. Second, a more realistic set-up...
The increasing electrode density in multielectrode arrays and the use of new materials for electrode fabrication are motivating the migration from passive to active neuroprobes. Numerous circuit design challenges for the implementation of optimal integrated neural recording systems are still present and need to be addressed. In this paper we present the systematic design of a programmable low-noise...
This paper presents a simulation model for fast and efficient prediction of the dynamic properties of high-resolution current-steering Digital-to-Analog converters. Current source mismatch, limited output impedance of the current sources and timing errors are taken into account in the simulation model. No assumptions about distributions are required for these parameters. Experimental results show...
This investigation focuses on setting up a discrete model of the coupling between a TEM field generated inside a TEM cell to a device under test for use in a circuit simulator. In first instance, different microstrips are used as device under test because of their well-defined characteristics. The resulting models of the TEM cell, the microstrips and the electric field coupling between them are explained...
A modified small-size tapered monopole antenna is optimized for ultra wideband applications in the 3-10 GHz band. Its performance in time and frequency domain is verified in co-design with the transceiver. The antenna miniaturized with our developed real-coded compact genetic algorithm, RCCGA, where the antenna area has been reduced 48% comparing to previous work at 3.1 to 11.7 GHz bandwidth operation...
In this paper, three different types of frequently used antennas in passive RFID tags with different sizes are investigated for voltage scavenging application. Most critical is to create a minimum voltage at the antenna port. Therefore, using simulations with two software packages, CST and HFSS, a detailed explanation is presented of the induced voltage at the antenna port versus antenna length and...
A modified small-size tapered monopole antenna is optimized for ultra wideband applications in co-design with the transceiver. Our optimization procedure aims at finding an antenna not only with low VSWR, but also miniaturizing the antenna at the same time. Our proposed optimization algorithm, real-coded compact genetic algorithm, RCCGA, has lowered the antenna area more than 48% compared to previous...
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