Compact EMSIW Quadruplexing Antenna
Bibliographic record
Abstract
This letter proposes a compact self-quadruplexing antenna based on an eighth-mode substrate integrated waveguide (EMSIW). The proposed antenna design integrates the unique properties of the EMSIW to achieve an efficient and isolated quadruplexing functionality with a highly compacted geometry. The proposed design operates at different frequencies: 4.3 GHz for Port-1, 5.2 GHz for Port-2, 5.8 GHz for Port-3, and 6.9 GHz for Port-4 when each respective port is active. A full-mode square SIW configuration is considered, which is subsequently transformed into an uneven eighth-mode SIW. Different dimensions of slots are strategically added to each cavity to achieve different operating frequencies and compactness. As a result, it takes up a compact area measuring 0.11$\lambda _{g}^{2}$. In addition, the proposed design ensures reasonable separation between the resonators to maintain isolation level of 29.1 dB. The proposed antenna gains are observed as 5.19 dBi (4.3 GHz), 5.63 dBi (5.2 GHz), 6.88 dBi (5.8 GHz), and 7.57 dBi (6.9 GHz).The proposed quadruplexing antenna offers attractive features that make it well suited for next-generation wireless communication devices. These features include mainly compact size, excellent isolation, independently controllable frequency bands, and high gain characteristics, making it highly desirable for modern wireless communication.
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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) | 0.000 | 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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 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".