{"id":"W4412873047","doi":"10.3390/electronics14142881","title":"A Dual-Band Quarter-Wave Transform and Its Applications to Directional Coupler Design","year":2025,"lang":"en","type":"article","venue":"Electronics","topic":"Microwave Engineering and Waveguides","field":"Engineering","cited_by":1,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"National Science and Technology Council","keywords":"Hybrid coupler; Multi-band device; Quarter (Canadian coin); Rat-race coupler; Dual (grammatical number); Power dividers and directional couplers; Electrical engineering; Engineering; Electronic engineering; Optics; Telecommunications; Physics; Art; History","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.00009406982,0.0001196808,0.0001076608,0.00009794196,0.00006487836,0.0000277149,0.00003910349,0.00005694681,0.00001346542],"category_scores_gemma":[0.000007675791,0.0001304188,0.00002515527,0.0002330531,0.000006126078,0.00003834081,0.000004098025,0.000135894,0.00001533871],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00009338929,"about_ca_system_score_gemma":0.0000382948,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":7.2195e-7,"about_ca_topic_score_gemma":0.00001133527,"domain_scores_codex":[0.9994157,0.00000551963,0.0001263945,0.0001415821,0.00005931329,0.0002515188],"domain_scores_gemma":[0.9997551,0.00005858419,0.000005225971,0.0000967209,0.00002680024,0.00005752925],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"not_applicable","study_design_scores_codex":[0.00005627436,0.0001169828,0.00002005962,0.0005093398,0.0005887244,0.000006589938,0.001041105,0.2408814,0.5593529,0.02720709,0.08107797,0.08914154],"study_design_scores_gemma":[0.0004329793,0.0001016364,0.0001761395,0.00004636683,0.00004704035,0.00003129885,0.00002008623,0.1440101,0.2315477,0.00200286,0.621197,0.0003866827],"study_design_candidate":"bench_or_experimental","study_design_consensus":null,"genre_codex":"methods","genre_gemma":"empirical","genre_scores_codex":[0.008328261,0.01673411,0.9696026,0.0003644692,0.0001097903,0.0004287134,0.00001083331,0.0003516338,0.004069519],"genre_scores_gemma":[0.9949231,0.001344407,0.002076671,0.00007585927,0.00007588199,0.0002174059,0.000009899294,0.00002760482,0.001249228],"genre_candidate":"empirical","genre_consensus":null,"teacher_disagreement_score":0.9865948,"threshold_uncertainty_score":0.5318325,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.009705642099793965,"score_gpt":0.2161304616406403,"score_spread":0.2064248195408463,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}