An anisotropic substrate grounded with a tensor impedance sheet for control of guided-waves and application to planar leaky-wave antenna design
Bibliographic record
Abstract
A simple and practical design technique is proposed to control guided-waves on a dielectric substrate. In particular, by introducing longitudinal slots with a transverse and sub-wavelength periodicity in the bottom metallic surface of a dielectric slab, radial surface-wave (SW) fields can be controlled for bound plane-wave propagation. An analysis of this guide is provided were the longitudinal slots for the modified ground plane are modeled by a tensor impedance sheet. Numerical calculations are in agreement with the full-wave simulations were considerations have been made for the structure anisotropy. Routing concepts are further applied to a SW-fed planar leaky-wave antenna (LWA) defined by a transverse array of microstrip lines with periodic width-modulation. Improved realized gain values for the LWA design are observed (more than 2.5 dB) when compared to a conventional ground plane configuration. Our approach for field control can also be applied to new guides and transitions, routing circuits, and other planar structures which operate at microwave and millimeter-wave frequencies.
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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) | 0.000 | 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 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".