Substrate integrated waveguide circularly polarized horn‐dipole antenna with improved gain
Bibliographic record
Abstract
ABSTRACT A substrate integrated waveguide (SIW) horn antenna is combined with a dipole to achieve circular polarization (CP). First, it is established that CP can be achieved by combining a horn and a dipole. To excite the dipole, double‐sided tapered and balanced transmission lines are employed at the central part of the horn aperture. Secondly, after the position and the size of the dipole are determined, a directional circularly polarized beam in the plane of the substrate is achieved. Finally, the proposed antenna is fabricated and measured. Experimental results are in good agreement with simulations. Measured results show that an effective bandwidth of 5% for axial ratio (AR) less than 3 dB and return loss (RL) better than 10 dB from 11.8 to 12.4 GHz is achieved. In particular, the maximum gain of the proposed antenna is as high as 7.5 dBi due to the design of the horn structure. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2973–2977, 2016
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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".