Experimental investigation of multi-element dielectric resonator antennas
Bibliographic record
Abstract
Studies of dielectric resonator antennas (DRA) have demonstrated their potential for millimeter wave applications due to their several advantages over microstrip patch antennas such as high radiation efficiency and absence of surface waves. The basic DRA structure consists of a dielectric resonator (DR) placed on a ground plane, coupled by a coaxial probe through the ground plane or a slot cut in the ground plane. Its bandwidth is mainly determined by the permittivity and structural aspect ratio of the DR. To improve the bandwidth, an air gap between the DR and the ground plane can be introduced, or the DR can be coated with a lower-permittivity dielectric layer. Stacked and parasitic coplanar configurations can also be used for bandwidth enhancement. The paper experimentally investigates a DRA that uses two- or three-element rectangular DRs, all coupled by a single slot in the ground plane of a microstrip line, and illustrates the usefulness of this structure for the realization of a wider band or dual-band operation.
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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 | 0.001 | 0.001 |
| 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 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".