{'fraction_non_alphanumeric': 0.03114571746384872, 'fraction_numerical': 0.03225806451612903, 'mean_word_length': 5.25, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 1, '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 of patch antennas on a multilayer substrate with a embedded periodic structure

The goal of this work is to further investigate on the use of a truncated planar metallic periodic structure (grounded FSS‐based) to create new resonance frequencies in a patch antenna. The periodic structure is placed inside the microstrip patch antenna (between the metallic ground plane and the patch) in the middle of a multilayer dielectric. The frequency behavior of the antenna as a function of the parameters of this periodic structure has been studied. Also the extension to a stacked patches configuration, which provides another resonance frequency, has been validated. Final antenna design presents flexible multiband operation. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1717–1722, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22527