{'fraction_non_alphanumeric': 0.025796661608497723, 'fraction_numerical': 0.025796661608497723, 'mean_word_length': 4.84070796460177, '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}}
A 12-36 GHz MMIC 3dB Coplanar Waveguide Directional Coupler

For the first time, a multilayer coplanar waveguide (CPW) coupled-line 3dB directional coupler has been realised, by using two metal layers on an MMIC substrate. In the frequency range 12-36 GHz, the coupler has an equal power imbalance of less than 1 dB. The coupler design incorporates both broadside and edge coupling. The MMIC is fabricated on a total chip size of 1.75mm × 0.74mm including four sets of wafer prober bondpads. This novel circuit configuration significantly improves the coupling performance and increases the bandwidth over other previously fabricated CPW branch-line couplers.