Compact Quarter-Mode SIW Self-triplexing Antenna for C-band and X-band Applications
Bibliographic record
Abstract
An ultracompact substrate integrated waveguide (SIW)-based triplexing antenna operating at three independent frequencies of 4, 7.8, and 10.68 GHz is proposed in this study. It is consisting of two miniaturized Square-shaped quarter-mode SIW (SQMSIW) resonators and one triangular one (TQMSIW). Their miniaturization was accomplished by inserting rectangular slots at the closed ends of each resonator, resulting in an increased shunt capacitance. As a result, the resonance frequencies were shifted to the lower end of their fundamental frequencies. The proposed design has a dimension of just 0.08 $\lambda _g^2$. Furthermore, the lowest attainable isolation level was as low as 27.5 dB. At the design frequencies, the highest realized peak gains were 4.9, 5.43, and 5.3 dBi at 4, 7.8, and 10.68 GHz, respectively. The final design has been fabricated, and the simulation findings agree well with the measured ones. In terms of independent frequency tuning functions, the proposed design demonstrated its versatility. This was accomplished simply by varying the length of the capacitive slots, making it a viable choice for compact multi-band wireless communication systems.
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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 | 0.000 | 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 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".