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The use of semi-physical simulation platform for school laboratory and classroom building scene a lot of field measurements, analysis of power line channel transmission characteristics of the different environments, and features a three-dimensional graphic display of variable power line channel under different scenarios. At the same time in order to improve the efficiency of the data analysis, the...
Powerline communications (PLC) is a favorable technique for many smart grid applications. By transmitting information over the existing powerline infrastructure, PLC has the benefit of low deployment cost. However, due to low transmit power, limited bandwidth, and harsh channel conditions, reliable long-distance and high-capacity PLC is challenging. Relay-aided (RA-) PLC is promising in addressing...
Impedance modeling for low voltage distribution network has important applications in power line communication and smart home constructions. Attribute to the topologies and loads connection, impedances of low voltage power line and loads are various and complicate. To obtain impedance characteristics of resident community distribution network, impedances characteristics with time and frequency are...
Based on the finite number of vanes model, the high frequency characteristics of ridge-loaded helical slow-wave structure (SWS) are analyzed with field match method. This paper presents the sector equivalent method for loaded ridge and support rod, so the process of solution is simplified. The dispersion characteristics, interaction impedance and attenuation are derived for ridge-loaded helical SWS...
An approach to modeling a resonant meanderline attenuator of helical slow-wave structure for a travelingwave tube is presented that uses eigen-mode solver in HFSS. The dispersion, interaction impedance and attenuation characteristics of the structure in the presence of the resonant attenuator were predicted using the model and were validated against experimental results, published elsewhere.
Voltage fluctuations leading to lamp flicker can propagate from the point of origin to various parts of the power system with some attenuation depending on the system impedances and load composition. Field measurements and theoretical studies suggest that the industrial loads containing large proportions of induction motors assist in attenuating flicker compared to residential loads consisting of...
A novel compact coupled planar resonator (CCPR) based VCO (voltage controlled oscillator) using mode-coupling technique was developed in response to expensive high Ceramic and SAW resonators based signal source for wireless communications. One of the problems related to the conventional Ceramic/SAW based resonators (with high Q and low phase noise) is the challenge for integration in IC form. Instead...
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