Flip-flop low profile wideband reflectarray antenna for ka-band
Bibliographic record
Abstract
A novel broadband flip-flop low profile Reflectarray (RA) is designed for Ka-Band based on the principle of dual side printed substrate. First, the reflected wave phase curve is obtained by varying the patch size on top layer while energy is coupled through a bottom slot of equal size to the patch. Such a cell provides 360° degress reflected phase with almost linear behavior. Second, the element is flipped and analysis for reflected phase when square slot is varied on top layer while the complementary patch, is varied in the bottom layer. Both methods provide full 360 degrees phase range. In both methods, a small air gap is introduced below substrate to add GND plane on bottom. The proposed methods provide broadband using the thinnest available substrate. Both designs achieve good performance in term of Half Power Beam width (HPBW), Side Love Level (SLL), cross polarization and gain bandwidth (at 30 GHz). The first 15*15 RA design provides, HPBW of 6.6 degrees, SLL -20 dB, cross polarization -25 dB down than copolar component, 1dB gain bandwidth of 14.5 % and 3-dB bandwidth of 23.2 % centered. Similarly, the second flipped 15*15 RA design provides, SLL of -17 dB, cross polarization of -25 dB down than copolar component, 1-dB gain bandwidth of 11.5 % and 3-dB bandwidth of 21 %.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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 | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 teacher head, 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".