Cross polarization performance of high gain antennas in the presence of phase errors
Bibliographic record
Abstract
The effects of asymmetric linear phase errors on the cross polarization of offset reflector antennas were studied. Both single TE11 mode and matched dual-mode feeds were investigated. For the former single mode feed, it was shown that the phase error significantly deteriorated the cross polarization performance with the increased non-uniformity of the phase patterns, particularly at the diagonal plane. As for the primary matched feeds, the effect of asymmetric linear phase errors, applied only to the TE21 mode, on the cross polarization of offset reflector antennas was investigated. In practice, such phase errors are the result of separate phase centre locations of each TE11 and TE21 modes. A broad range of f/D ratios were studied. It was shown that the cross polarization levels drastically increased at both inter-cardinal and asymmetry planes. More interestingly, the cross polarization pattern had a broadside shape rather than a boresight-null. The results were the same as the radome effects on the cross polarization of monopulse tracking systems were reported.
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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 | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| 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".