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This paper discusses how the measurements of the near-field emissions in the time domain can be used to characterize the broadband emissions from complex sources such as multifunctional Printed Circuit Boards (PCBs). The near-fields, transverse to the measurement surface, are sufficient to characterise the radiator provided the surface contains all the significant fields. For time domain measurements,...
Measurements of field-field correlation in the time domain can be used to characterize stochastic broadband emissions from complex sources. A two-probe scanning measurement system is developed and used to sample the stochastic emissions in the near-field of two such sources: a reverberation chamber with a rectangular aperture and a generic printed circuit board (PCB). We show that measured field data...
A wireless electrocardiograph technology (WECG) which works on 2.5 GHz frequency band has been designed, implemented and evaluated in the actual environments both indoor and outdoor. WECG system has the benefit for improving the quality of the health care services especially for monitoring and evaluating people heart pulses record during the treatments. These are also practically useful to apply on...
Various types of internal antennas suitable for digital TV receiver have been investigated. These include rectangular plate loop structure, 1/2λ monopole, and L-dipole. Evaluations of the internal antennas were done, numerically and experimentally, to obtain some electrical properties such as S11, VSWR, gain and radiation pattern. All the fabricated antennas are incorporated inside the TV receiver...
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