Suppression of substrate coupling between slot antennas using electromagnetic bandgap structures
Bibliographic record
Abstract
In this paper, the effect of finite substrate thickness is investigated for a single slot antenna printed on a grounded dielectric. It is concluded that a thin dielectric backed by a conductor wall drastically degrades the performance of the slot antenna while an EBG reflector provides unidirectional radiation pattern and gain improvement and increases the efficiency of the antenna by suppressing the unwanted parallel-plate waveguide mode. The EBG reflector is a mushroom type structure designed to induce a stopband around the resonance frequency of the slot antenna, i.e. at 5.2 GHz. It is also used as the reflector in a two slot antenna system. Fullwave simulations demonstrate that the designed EBG reflector results in improvement of antenna isolation by more than 20 dB across the frequency range of 3.05 GHz to 5.35 GHz by suppressing the substrate coupling through parallel-plate waveguide mode.
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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".