Employing EBG Structures in Multiantenna Systems for Improving Isolation and Diversity Gain
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Bibliographic record
Abstract
This letter investigates the effect of mutual coupling on the operation of a multiantenna system. Radiation pattern, input impedance, gain, and efficiency of a slot antenna in proximity of another slot antenna are studied through simulations. A mushroom-type electromagnetic band-gap (EBG) structure is designed to isolate the antennas and reduce the influence of coupling on radiation characteristics. Two multiantenna prototypes are fabricated and experimentally evaluated. Measurement results confirm the improvement of isolation between the antennas by 28 dB at the radiation frequency of 5.2 GHz when the EBG reflector is utilized. In addition, the diversity gain of the two prototypes are measured using a reverberation chamber demonstrating an increase of 3.3 dB in the combined received power for 99% of transmission trials when the EBG structure is added in the substrate of the multiantenna system.
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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 it