Experimental Verification of Below-Cutoff Propagation and Chirality in Metasurface-Lined Waveguides
Bibliographic record
Abstract
This article presents an experimental verification of cutoff manipulation and chiral properties in circular metallic waveguides through the insertion of a concentric metasurface (MTS) liner. These liners are shown to be readily implemented using Jerusalem-cross patterns printed onto a flexible dielectric substrate. The insertion of this MTS liner introduces an HE11 mode whose dispersion may be engineered to allow propagation well below the natural cutoff frequency of the waveguide. By rotating the Jerusalem-cross unit cells relative to the axis of the waveguide, it is shown that the dispersions of the left-hand circularly polarized (LHCP) and right-hand circularly polarized (RHCP) HE11 modes can be separated, creating a chiral behavior that can be controlled by the rotation angle. Spiral antennas are designed to excite the LHCP and RHCP modes through an MTS-lined waveguide section. The resulting S-parameter response of the MTS-lined waveguide is investigated numerically and then verified experimentally, demonstrating that the MTS-lined waveguide supports below-cutoff propagation and different responses to LHCP and RHCP modes.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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".