Highly Isolated Dual Circularly Polarized Metallic ME-dipole Antenna Array Design
Bibliographic record
Abstract
A novel dual circularly polarized metallic magneto-electric dipole (D-CP-M-ME-dipole) for the 30 GHz band is presented. The D-CP-M-ME-dipole uses solid metallic aluminum bulk without surrounding it with metallic cavities. It is fed by crossed narrow slots coupled to air-filled microstrip lines packaged by a bed of printed periodic mushrooms, achieving a bandwidth of 26–41 GHz (46%). An 8×8 array is constructed and fed by a carefully designed dual-polarized cooperative feeding network, which is optimized considering the mutual coupling influence. Hence, the need for an external decoupling mechanism to isolate the two polarizations is eliminated. The feed network is on Printed gap waveguide (PGW) to prevent leakage. Furthermore, parasitic elements are added to the 8×8 array to realize a 9×9 element array that improves the overall gain over the bandwidth. The 9×9 dual CP metallic ME- dipole is fabricated and measured to verify this procedure, with an ultrawide impedance bandwidth of 26–42 GHz (47%), 26.6 dBic gain, and 90% total efficiency, with less than 40 dBi isolation between the two polarizations throughout the band.
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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) | 0.000 | 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) | 0.002 | 0.002 |
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".