{'fraction_non_alphanumeric': 0.023479188900747065, 'fraction_numerical': 0.0032017075773745998, 'mean_word_length': 5.380952380952381, '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 investigation of high-power helix TWT for systems of distant and space communication

The application in output cascades of multichannel high-power transmitters of wideband vacuum devices, which are capable to work at several frequencies simultaneously, is an actual problem. The multifrequency modes were investigated in high-power helical TWT, having the band of amplified frequencies more than 40% and working without regulation of applied voltage in all operating frequency range. The third-order elements of the intermodulation products (3rd IMPE) were investigated by operation in a multifrequency mode at different levels of the output signal. For the purpose of getting a regular amplitude-frequency characteristic (AFC) and damping of self-excitation in a working mode, we used different parameters of the helix for the different parts of a slow-wave system (SWS) and optimum location of additional local attenuators.