Dual-Band Shared Aperture Antenna with a Large Operation Frequency Ratio for 5G Application
Bibliographic record
Abstract
A shared aperture antenna is presented, which covers two widely separated frequency bands, Sub-6GHz and millimeter-wave (Sub-6GHz/mmWave), such as 3.5 and 28GHz. The overall antenna consists of a patch antenna that radiates at 3.5GHz, whereas the$1\times 4$CDRA (Circular Dielectric Resonator Antenna) array embedded in SIW (Substrate Integrated Wave-guide) radiates at the center frequency of 28GHz. To reduce the aperture antenna area, we use the stack layer technique. The overall dimension of the antenna is$0.73\times 0.34\times 0.027\lambda_{L}^{3}$, where$\lambda_{L}$is the low-frequency wavelength. The antenna performance achieves a bandwidth of 9.7%/9.46%, a maximum gain of 5.25dBi/10.5dBi, and an efficiency of 90.9%/88%.
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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) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.003 |
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".