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A mutual coupling reduction strategy that employs meta-structures is introduced for wideband, dual-polarized, high-density, planar, and patch antenna arrays. The meta-structures consist of two types of resonators: grounded capacitively loaded loops (GCLLs) and $\pi$ -shaped elements. By incorporating the meta-structures into the array configuration, the isolation levels between adjacent radiating...
According to the characteristics of force-frequency character of quartz crystal and a kind of structure of mono-base multi-electrode quartz resonator, a new signal processing scheme is presented. Base frequency signals are firstly outputted when different places resonator is vibrated synchronously, and then are sent to mixer, after difference frequency signals are obtained, signals are sent to mixer...
According to energy trap theory and finite element analyze, we plated several electrodes on the same quartz substrate. And a multi-electrode quartz crystal resonator is created. We study the force-frequency characteristic of resonators and output of slip frequency on different positions of quartz substrate by adding radial force. Simultaneously the resonator vibration state stability of this kind...
Based on the relation of force sensitive characteristic of quartz crystal resonator with adding force azimuth and wave propagation in crystal lame, and according to the wave restrict theory of crystal vibration, the integrated three-electrode resonator is designed and fabricated on the same crystal wafer. We study the relations of the resonators with this structure the force sensitive characteristic...
An ANSYS analysis and computation of the stress distribution in circular AT cut quartz wafer was carried out, when quartz wafer was subjected to a force along its diameter which was parallel to the x axis, the force-frequency coefficient of quartz resonator were tested by using plated electrode on different region. Experiment proves that the result of ANSYS analysis is nearly consistent with experiment,...
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