Britain has walked a tightrope over Yemen's civil war for years - who's involved and why has the UK now launched airstrikes?
Abstract: A wide-angle scanning leaky-wave antenna based on double-layer double-row (DLDR) spoof surface plasmon polariton (SSPP) is presented. The designed periodic SSPP with double-layer ...
Abstract: In this letter, a wideband two-dimensional (2-D) scanning multibeam array antenna is proposed using a novel beamforming network (BFN). First, a novel three-beam Butler matrix (BM) network, ...
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