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The quest for wide band operation of antenna arrays, for example reaching 10 to 1 or more, has led to the consideration of many different types of elements. Spirals and other wide band elements have been tried as one alternative, but this leads to large elements with wide interelement spacing that results in grating lobes at high frequencies. In the work of Munk, it was shown that simple dipoles and...
Two-current probes method and S-parameter method are studied comparatively for conductive EMI noise source modelling in this paper. Firstly, the basic theory of the two-current probes method and S-parameter method are introduced for noise source impedance extraction. Secondly, ZX and Zsetup are important intermediate results in the two methods, therefore their extractions are analyzed respectively...
A conventional wire communication system communicates between powered terminals via a main unit. In this system, the main unit communicates with the powered terminal by changing the voltage signal to the positive and the negative. The powered terminal communicates with the main unit using the reply current signal. Because this system is used for on-off control, the communication speed is slow. Therefore,...
On the base of the induced electromotive forces method with using the uniform geometric diffraction theory a technique for calculating the input impedance and the resonant length of a nonsymmetrical dipole placed on the rectangular metal screen is developed. Influence of the form and sizes of the screen on resonant length and input impedance of this dipole is investigated.
Electronic wiring interconnect system (EWIS) traditionally have been treated as a commodity as apposed to a system. The EWIS, being responsible for the transfer of power and information of aircraft systems, represents a point of failure that is usually considered as a maintainer's last resort. We attempt to develop a diagnostic capability for the detection and progression of EWIS damage of data using...
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