Abstract: This letter proposes an angle-multiplexed multifocal method for designing a 2-D beam-scanning transmitarray (TA). The angle-multiplexed method is commonly used to generate orbital angular ...
Abstract: The instability of the sheet electron beam (SEB) is an essential factor for limiting the power of the SEB traveling wave tube (TWT). To solve this issue, this article proposes a method to ...
The A127 in Essex was shut for more than four hours due to concerns for a person's welfare. Police closed the westbound carriageway at Rayleigh Weir earlier and warned of extensive delays for ...
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