Design of a Ku-band coplanar waveguide 90° branchline coupler
Bibliographic record
Abstract
We apply our 3-D full wave coplanar waveguide (CPW) simulator to design a CPW 3 dB 90/spl deg/branchline coupler (BLC) for use in the Ku-band (i.e. 11.7-12.2 GHz). The substrate used for the design is alumina (/spl epsiv//sub r/=9.98). Two distinct designs of the same coupler are provided. The first is a standard sized, straight arm, BLC (SSBLC). Each arm of the SSBLC is approximately /spl lambda//4 at the design centre frequency of 11.95 GHz. The second design is a reduced sized BLC (RSBLC) which replaces the straight BLC arms with meandered arms. The area of this RSBLC is approximately 40% of the area of the SSBLC. In both designs, the T-junction compensation is carried out using optimization. Experimental and numerical results are provided for the SSBLC design. Numerical results are also given for the RSBLC design.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".