{'fraction_non_alphanumeric': 0.021220159151193633, 'fraction_numerical': 0.013262599469496022, 'mean_word_length': 4.852713178294573, '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}}
Analysis and design of a novel compact UWB antenna

A novel compact planar circular slot UWB antenna with rectangular patch is proposed. The antenna is similar in configuration to a conventional planar circular slot microstrip antenna, but there is a rectangular patch in the middle of the circular slot. By this way, the antenna can achieve ultra-wideband characteristic and very small size, In the experiment results, the impedance bandwidth of the antenna covers a frequency range between 2.4 GHz to 12 GHz, which means the ratio impedance bandwidth reachs 5:1. Moreover, the physical size of the antenna is only 35 mm times 35 mm . Having ultra-wideband characteristic and compact and planar structure, the antenna is suitable for UWB communications.