An X-Band Parallel Plate Waveguide Linear Reconfigurable Reflectarray Antenna
Bibliographic record
Abstract
A reconfigurable linear reflectarray antenna with an interelement spacing of 0.3725 lambda operating at 11 GHz is presented. Each reconfigurable element is controlled with two varactors diodes which allows the array to scan in one plane. Firstly, two reconfigurable elements are inserted in a WR-90 waveguide to assess the performance of the unit cell. The minimum return loss of the two elements measured at 11 GHz in the WR-90 waveguide is −5.3 dB and the available phase range is 262°. Then, a linear reflectar-ray of 40 elements and an H-plane sectoral horn antenna are inserted between two parallel plates to form the reconfigurable reflectarray antenna. A beam scanning from −35° to 20° degree with a 5° step is demonstrated. Within this range, the minimum and the maximum gain measured is 14.45 dBi and 17.17 dBi with an isolation from the cross polarization of −23.01 dB. The average half power beam width is 4.77° and the average side lobe level is −8.04 dB for a beam scanning from −35° to 20°.
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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 | 0.000 | 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".