X-Band Dielectric Rod Antenna With Pre-Select Bandpass Filter
Bibliographic record
Abstract
This paper presents a dielectric rod antenna integrated with a pre-select filter at X-band. The antenna and the pre-select filter are both 3D-printed in a single pass using ABS filament with$\varepsilon = 2.6$and$\tan (\delta)=0.0025$. The pre-select filter section is designed based on variations in the waveguide’s cross-section, which is shielded by conductive paint, while the antenna section consists of a rectangular cross-section dielectric rod antenna. All sections of the pre-select frequency antenna are made to WR-90 standard waveguide dimensions, and prototypes of the antenna and pre-select frequency antenna have been built and measured. A passband bandwidth of 10% at a center frequency of 10.5 GHz for the pre-select frequency antenna is achieved, with the incorporated pre-select filter limiting the bandwidth of the X-band antenna, showing a considerable off-band rejection. The prototype shows a maximum peak realized gain of 13.1 dBi at 11 GHz, with a minimum side-lobe level of 12.29 dB.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.002 |
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".