Abstract: In this paper, a 4 × 4 wideband linearly polarization (LP) antenna array is proposed by using planar dual-arm spiral structures. Wideband balun structures, composed of microstrip line-fed ...
Abstract: The superposition of 5 plane spiral orbital angular momentum (PSOAM) beams with OAM modes 0, ±1, and ±2 is realized at 10.1 GHz to constitute the structured electromagnetic waves. The ...
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