Compact Dual Linear Polarized Antenna Feed for LEO Satellites Based on Quad Ridge Waveguide
Bibliographic record
Abstract
Low Earth Orbit (LEO) satellites are regaining interest in the wireless communications community as they will be heavily used in future wireless communication networks. LEO satellite transceivers require high-gain antennas with stable characteristics within the operating bandwidth. Horn antennas are commonly used as feeders for such transceivers. Moreover, multiple satellite systems use dual-polarized antennas to enable polarization diversity. This article proposes a dual-polarized satellite feeding structure consisting of an orthomode transducer with a quad ridge common port loaded by a quad ridged horn antenna. The proposed OMT exploits a one-fold symmetry to eliminate the coupling to the in-band higher-order modes within the common port. The proposed design operates in Ka-band from (25-28.5 GHz). The integrated system achieves a matching level below -15 dB with a stable gain of 14.2 ± 0.8 dB over the operating band.
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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) | 0.000 | 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) | 0.001 | 0.001 |
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".