{'fraction_non_alphanumeric': 0.04628501827040195, 'fraction_numerical': 0.0389768574908648, 'mean_word_length': 4.48, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Wideband Fabry-Pérot resonator for 28 GHz applications

In this paper, a compact design of Fabry-Pérot (FP) resonator for 28 GHz applications is proposed. The antenna is composed of a coaxial-fed source radiator (patch antenna), an air cavity, and a partially reflecting surface (PRS) with 4×4 array of cells. The antenna has a good radiation behavior in the desired operation band of 26-30 GHz with 6 dBi directivity improvement. The antenna is designed on low-cost FR-4 dielectrics (h=0.8 mm, ε=4.3, and δ=0.025). The designed FP resonator exhibits wide bandwidth around 28 GHz which is one the candidate bands for the future fifth generation (5G) wireless systems. It exhibits a high-gain directive-beam pattern in the broadside direction with 12 dBi directivity at 28 GHz. The antenna has a compact size of 25×25 mm2.