{'fraction_non_alphanumeric': 0.038356164383561646, 'fraction_numerical': 0.0273972602739726, 'mean_word_length': 5.142857142857143, '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}}
A CSRR and SRR Based Ultrawideband MIMO Antenna with Band-Notched Characteristics

An ultra-wideband(UWB) multiple input and multiple output(MIMO) antenna consisting of complementary split-ring resonator(CSRR) to improve mutual coupling and split-ring resonator(SRR) is proposed in this paper for automotive communications. The UWB MIMO antenna has a compact size of 54×33mm2 including two parallel monopoles. The isolation of less than −15db is achieved from 3.1 to 10.6GHz by the SRR located between the two grounds. Moreover, to reject the interference from existing frequencies, the antenna exhibits dual band-notched characteristics at 5th generation band of 3.3-3.6GHz and 4.8-5GHz by applying CSRRs structures on the patch.