An electronically tunable half-mode substrate integrated waveguide leaky-wave antenna
Bibliographic record
Abstract
In this paper, a new type of leaky-wave antenna (LWA) is proposed using half-mode substrate integrated waveguide (HMSIW) as the base structure. The HMSIW allows easy implementation of shunt tuning elements, which in turn enables changes in the dispersion characteristic of the LWA. By incorporating series and shunt tuning capacitors, i.e. varactor diodes, the LWA is able to scan from backward to forward angles at a fixed frequency. Since the structure is periodic in nature, Floquet analysis of its unit cell is used as the basis for the initial design to obtain estimated angles of the maximum beam and Bloch impedance. The antenna is also designed to minimize the number of shunt tuning components required to implement the desired scanning. From numerical simulations, the HMSIW LWA demonstrates scanning angles between −33° and +56° at 8.2 GHz over the capacitance range of 0.1–0.4 pF. The return loss is found to be larger than 5 dB in most cases. Finally, the proposed design is evaluated experimentally using unit cell prototypes.
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How this classification was reachedexpand
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) | 0.001 | 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 teacher head, 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".