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The authors have proposed estimation algorithm of rain rate using measured rain attenuations. The estimation algorithm for the clear-weather level is presented. The rain attenuation is calculated using the estimated clear-weather level. The rain attenuation can be estimated using the rain attenuation. The proposed estimation algorithm is demonstrated using data obtained by the Tokyo Tech millimeter-wave...
Accurate de-embedding technique to remove the effect of pads is highly desired in on-wafer RF characterization, especially in the millimeter wave band. There are several calibration techniques such as TRL, Through-Only, Multi-Line, the method using Thru and Line patterns, etc. But the most commonly used technique is the de-embedding technique using open and short patterns, referred to as the open-short...
In this paper, the conductivity of a copper-clad cyclo olefin polymer (COP) substrate and PTFE substrates with two types of copper clad in the millimeter wave region was accurately evaluated. The roughness of the contact between the copper and dielectric could degrade the conductivity of the copper equivalently, which increases loss. The evaluation of complex permittivity in a dielectric substrate...
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