A Continuous Beam Steering Slotted Waveguide Antenna Using Rotating\n Dielectric Slabs
Bibliographic record
Abstract
The design, simulation and measurement of a beam steerable slotted waveguide\nantenna operating in X band are presented. The proposed beam steerable antenna\nconsists of a standard rectangular waveguide (RWG) section with longitudinal\nslots in the broad wall. The beam steering in this configuration is achieved by\nrotating two dielectric slabs inside the waveguide and consequently changing\nthe phase of the slots excitations. In order to confirm the usefulness of this\nconcept, a non-resonant 20-slot waveguide array antenna with an element spacing\nof d = 0.58{\\lambda}0 has been designed, built and measured. A 14 deg beam\nscanning from near broadside ({\\theta} = 4 deg) toward end-fire ({\\theta} = 18\ndeg) direction is observed. The gain varies from 18.33 dB to 19.11 dB which\ncorresponds to the radiation efficiencies between 95% and 79%. The side-lobe\nlevel is -14 dB at the design frequency of 9.35 GHz. The simulated co-polarized\nrealized gain closely matches the fabricated prototype patterns.\n
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 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 | 0.001 | 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 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".