Abstract: A wideband circular patch antenna with a conical radiation pattern for wireless communications is proposed. With the combination of a circular patch and four feeding open loops, the antenna ...

Abstract: Focusing on the unconstrained circle cutting problem, a recursive algorithm which can generate four-block cutting pattern was presented. With the four-block cutting pattern, a sheet can be ...

Learn how to crochet an adorable amigurumi bear in a cozy cardigan — no magic ring needed! This step-by-step tutorial includes a free pattern, clear instructions, and tips for beginners. Perfect for ...

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