{'fraction_non_alphanumeric': 0.027696793002915453, 'fraction_numerical': 0.016034985422740525, 'mean_word_length': 4.973913043478261, '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}}
An End-Fire Dual Circularly Polarized Antenna for Millimeter-Wave Applications

An end-fire dual circularly polarized antenna based on multilayer dielectric substrate processing technology is proposed in the paper. The antenna is designed with SIW transmission line, by adding a stepped dielectric matching structure at the end of the transmission line, the antenna achieves an impedance bandwidth of more than 20% (27–33 GHz), and the isolations between two ports are higher than 20 dB. Within the above bandwidth, the axial ratio of the antenna is less than 3 dB. By setting the master-slave boundary in HFSS, the antenna array can realize ±30° beam scanning in the above frequencies.