Abstract: Calibration is crucial for ensuring the performance of phased array since amplitude-phase imbalance between elements results in significant performance degradation. While amplitude-only ...

Add Yahoo as a preferred source to see more of our stories on Google. Essex fire crews attend an industrial unit on Edinburgh Way in Harlow [Essex Fire and Rescue] Firefighters are tackling an ...

TOKYO -- Operating the massive rotating furnaces that cook the ingredients to make cement takes years of experience. With fewer seasoned hands to do the work, one Japanese company is turning to ...

Abstract: As a new type of low-frequency magnetic antenna, the rotating permanent magnet antenna (RPMA) has great application potential in underwater and underground communication. An RPMA array based ...