{'fraction_non_alphanumeric': 0.015300546448087432, 'fraction_numerical': 0.003278688524590164, 'mean_word_length': 5.450704225352113, '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}}
Study of A Water- Immersed Orbital Angular Momentum Circular Antenna Array

A new method that can significantly improve the microwave biological imaging resolution is provided by means of water-immersed orbital angular momentum (OAM) circular antenna array. Considering the microwave penetration depth and the reflection at the interface between tissue and environment, 2.45GHz is selected as the central frequency of the OAM circular antenna array which is assumed to be immersed in water. Some important simulation results of the water-immersed OAM circular antenna array are presented here, and the purity of OAM modes with respect to different states is calculated from these results. The proposed antenna array generating different OAM waves can radiate into biological tissue and organ immersed in water efficiently, indicating the potential to achieve super-resolution of microwave biological imaging system.