{'fraction_non_alphanumeric': 0.030598052851182198, 'fraction_numerical': 0.013908205841446454, 'mean_word_length': 5.153846153846154, '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}}
Wideband bandpass filter design for D-band application

This paper presents the design and characterization of a wideband bandpass filter for millimetre-wave D-band application. The filter is implemented on a three-layer thin film structure using benzocyclobutene (BCB) silicon technology. Two stepped-impedance resonators are used to construct the bandpass filter, while the input/output coupling is achieved by coplanar waveguide (CPW) to stripline transition. The prototype filter is fabricated and measured. The measurement results agree with the simulation results well and exhibit a wideband bandpass filtering response with fractional bandwidth of 32.2% at 135.6 GHz. The mid-band insertion loss is only 2.94 dB.