Abstract: Reconfigurable intelligent surface (RIS) has recently emerged as a promising solution to significantly enhance the security of wireless communication systems. By combining the advantages of ...
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Present perfect continuous tense | English made easy
This video breaks down the Present Perfect Continuous tense into the simplest steps possible. You’ll learn how it’s formed, when to use it, and how it sounds in everyday English. Clear examples make ...
Abstract: This communication presents an active-passive reconfigurable antenna with 70–7200 MHz bandwidth for multiple wireless services. The active-passive reconfiguration is achieved by reusing a ...
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