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Measuring the scattering parameters of electric components is normally established by using suitable high frequency galvanic contacts like those of coaxial connectors. Methods for Contactless Vector Network Analysis (CVNA) are rare but could promise advantages in many respects. In this paper, a pre-existing concept for Contactless Vector Network Analysis using a special sort of current probes as contactless...
The well-established calibration techniques for loop antennas either require the knowledge of some parts of the antenna design or the field pattern of a standard field generator must be well known or fully theoretically describable. The so called Contactless Vector Network analysis (CVNA) method is a new and traceable approach, circumventing these requirements. This paper is about the further development...
Two tapered structures for frequency-domain characterization of a wide-terminal 50-mΩ current-sense resistor are designed and presented. The structures are designed to achieve a uniform current distribution through the analyzed resistor. The designed structures are optimized in EM solver to achieve a 50-Ω characteristic impedance. The lumped-element model of the analyzed resistor is extracted. The...
Magnetic loop antennas are commonly used for investigations on magnetic fields in a frequency range up to 30 MHz. As for all antennas the antenna factor is the result of a calibration procedure. Commonly used calibration routines like the standard field, standard antenna and three antenna method will be compared to a newer approach called impedance method, first introduced by Ishii [2]. Finally a...
This paper describes activities of EMC project named SRTi10 that is run by EMRP. Project outlines are described generally; one task is presented more in detail. Calibration of EMC testing equipment, especially of LISN (Line Impedance Stabilization Network) is problematic in aspect of traceability, which is more and more important nowadays. To assure traceable calibration, new calibration equipment...
Free space methods for electromagnetic compatibility (EMC) antenna calibrations at Open Area Test Site (OATS) are not suitable for monopole antennas due to corresponding large wavelengths in low-frequency bands. As an alternative, the Equivalent Capacitor Substitution Method (ECSM) is commonly adopted now. In this paper, a major uncertainty factor of capacitance accuracy is investigated by simulation...
Flicker compliance tests for mains-connected appliances rely on a power source and reference impedance network that simulates the mains supply. Assessment of an appliance is achieved by measuring the flicker induced on the power source output by the appliance, which is dependent on the output impedance of the power source and reference impedance network. The value of this output impedance and its...
In this paper, a circuit model of the jig used for calibration of bulk current injection (BCI) probes is derived. The jig model is used to develop a procedure for probe-model extraction, based on measurement data, with the injection device mounted onto the calibration jig. This allows to exploit a device, i.e., the calibration jig, belonging to standard equipment of every EMC laboratory, and provides...
This paper presents Design and Development of ldquoFPGA based hardware design of high speed compact T/R unit controllerrdquo of active phased array Radar. This controls 2-T/R modules integrated in each of the T/R Unit and interfaced over a 10-Mbps duplex serial link (multi drop LVDS bus interface). The Compact T/R Unit Controller generates the necessary control signals required for normal and calibration...
EMI/EMC Tests on spacecraft subsystems/equipments involve making the test setup, calibration of measuring instruments, verification of test setup and performing the actual tests. A wide range of test frequencies are involved: 100 Hz to 400 MHz for conducted mode tests and 10 kHz to 40 GHz for radiated mode tests. Performing EMI tests in manual mode, sometime, may become tedious, time consuming and...
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