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The design, fabrication and measurement of a 4μ8 open-ended waveguide array antenna operating over 3-3.4 GHz are presented. Each waveguide is connected with a ferrite phase shifter which provides phase delay to ensure electrically scanning. Furthermore, the waveguide is partially filled of dielectric to enable better matching of the waveguide to free space. Measured results have confirmed that, the...
In this paper we theoretically and experimentally present a nonresonant vibration energy harvesting device based on the shear mode of 0.71Pb(Mg1/3Nb2/3)O3-0.29PbTiO3 single crystals. The electrical properties of the energy harvesting device were evaluated using an analytical method. Good consistency was obtained between the analytical and experimental results. Under a mass load of 200 g, a peak voltage...
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