{'fraction_non_alphanumeric': 0.03901170351105332, 'fraction_numerical': 0.027308192457737322, 'mean_word_length': 4.539568345323741, '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 and demonstration of 1-bit and 2-bit transmit-arrays at X-band frequencies

This article describes the design of planar transmit-arrays at 10 GHz with 1-bit and 2-bit phase quantization and specific unit-cell designs in each case. The influence of the main design parameters are investigated numerically. The measured directivity/gain values equal 26/23.6 dBi for the 1-bit design, and 23.7/14.3 dBi for the 2-bit design, respectively. In particular, the influence of the unit-cell size is highlighted. Both designs are built on a two-layer printed circuit board assembly and operate in linear polarization. Beam-steering characteristics up to ±30° are investigated and compared by tilting the feed source and by changing the phase distribution across the array.