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There is great necessity to allocate/combine the power of signal in the present 340GHz microwave system. Therefore, this paper designed a 340GHz directional coupler with branch waveguide structure. A five-branch waveguide structure was designed in this paper considering relative bandwidth and the size of the structure. After simulating and analyzing the model of coupling structure by finite element...
Superabsorbent is a kind of new material and widely used in daily life which can absorb and hold a large amount of water ever under pressure. Many efforts has been directed to the use of superabsorbent resin which can significantly improve the water content of soil, volume expansion rate, total porosity and capillary porosity and soil structure, and also can ease the change of ground temperature,...
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