Circularly Polarized Substrate Integrated Waveguide Antenna With Wide Axial-Ratio Beamwidth
Bibliographic record
Abstract
A circularly polarized (CP) substrate integrated waveguide (SIW) antenna is presented. First, our study demonstrates that wide axial-ratio beamwidth can be achieved by exciting a square slot with four pins. Second, gap rings are employed around the pins to control the resonant frequency of the antenna. After the variation of thee diameters of gap rings, the frequency of best impedance match corresponds to that of the widest axial-ratio beamwidth. Finally, a CP antenna is designed and fabricated. Experimental results are found in good agreement with simulations in terms of radiation patterns, gain, axial ratio, and reflection coefficient. In particular, the 3-dB axial-ratio beamwidth at the center frequency of 7.98 GHz is extended to 150°.
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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".