President Donald Trump’s approval rating is down in a third poll this week that also found the majority of Americans say he’s performed below expectations since taking office. U,S. President Donald ...
Abstract: The robotic fish has attracted widespread research interest over the past few decades, due to its outstanding agility and environmental friendliness. And the sensing ability of underwater ...
Abstract: An in-phase power divider (PD) with a wide tuning range for the power division ratio across one octave bandwidth is presented. The device uses a quarter-wavelength three-line coupled ...
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