Electronically Sweeping-Beam Antenna Using a New Cylindrical Frequency-Selective Surface
Bibliographic record
Abstract
An electronically sweeping radiation-pattern antenna using a new active cylindrical frequency-selective surface (ACFSS) is presented for 2.45-GHz operating frequency. The ACFSS screen is constructed by a new reconfigurable hybrid unit cell, providing more freedom to control the antenna radiation characteristics. A design guideline based on the reflector antenna principles is also introduced to estimate the overall dimensions of the antenna geometry, and then the required number of unit cells for the ACFSS surface is calculated. Furthermore, to confirm the proposed design guideline, the performance of the designed antenna is compared to three conventional reflector antennas constructed with solid perfect electric conductors. The achieved simulation results for these antennas are carefully examined and the impact of the FSS surface on enhancing the ACFSS antenna gain is discussed. Moreover, parametric studies for the crucial dimensions of the unit cell are also presented to demonstrate the effect of each parameter on the antenna radiation characteristics. To completely examine the achieved results, the transmission coefficient response of the applied FSS sheet is experimentally assessed, and the antenna measured parameters are accordingly interpreted.
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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) | 0.001 | 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 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".