{'fraction_non_alphanumeric': 0.020833333333333332, 'fraction_numerical': 0.004734848484848485, 'mean_word_length': 5.647798742138365, '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}}
Design of a Low-Frequency Miniaturized Piezoelectric Antenna Based on Acoustically Actuated Principle


 An acoustically actuated piezoelectric antenna is proposed for low frequency (LF) band in this paper. The proposed antenna is theoretically calculated, numerically optimized by the finite element method (FEM), and experimentally analyzed. The measurement results show that the near-field radiation pattern is similar to the electric dipole antenna. The radiation efficiency of piezoelectric antenna is 3-4 orders of magnitude higher than that of electrically small antenna (ESA) with the same size, and the maximum transmission distance obtained from the experiment is 100cm, which can be improved by increasing the input power. In addition, the gain, directivity and quality factor of piezoelectric antenna are also analyzed. The manuscript creatively uses traditional antenna parameters to analyze the performance of piezoelectric antenna. The research conclusions can provide reliable theoretical basis for the design of LF antenna miniaturization.