{'fraction_non_alphanumeric': 0.020833333333333332, 'fraction_numerical': 0.005787037037037037, 'mean_word_length': 5.223021582733813, '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 Vertically Polarized Dual-Beam Antenna Using Modulated Metasurfaces

In this paper, a dual beam vertically polarized metasurface antenna with broad bandwidth and high polarization purity is designed. Its aim is to improve the antenna polarization all over the visible region. Furthermore, by implementing a surface-wave reflector and removing the destructive effects of backward modes, the operational bandwidth of antenna is significantly improved. The scanning bandwidth of antenna is achieved for the frequency band of 16-19.5 GHz with suitable levels of cross polarization. Also, the gain of two distinct beams are approximately equal all over the operational bandwidth. The Fourier technique is used in the aperture of antenna to synthesize the dual-beam pattern. Moreover, there is a good agreement between this method and the full-wave simulations.