Growing evanescent waves in a cutoff rectangular waveguide loaded with an inductive iris and a capacitive post
Bibliographic record
Abstract
There has been much interest recently in the area of engineered materials with unusual electromagnetic properties known as metamaterials. Of particular interest are those metamaterials that are characterized by a negative refractive index (NRI). The existence of growing evanescent waves is one of the very interesting phenomena that has been observed within such NRI materials. It is the purpose of this paper to investigate the presence of growing evanescent waves within a cutoff rectangular waveguide. It will be shown through theoretical analysis, full-wave simulations, and experimental results that the development of such a wave is not unique to NRI materials. Indeed, it is possible to generate such growing evanescent waves through the simple loading of a cutoff rectangular waveguide with a shunt capacitive post. The further loading of the waveguide with a shunt inductive iris can impedance match the growing evanescent wave to a standard decaying evanescent field, thus producing an evanescent field pattern similar to that observed in a NRI slab in air.
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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 | 0.001 | 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 | 0.001 |
| 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".