COTS Satellite Receiving Terminal's Antenna Measurement Practice and Analysis
Bibliographic record
Abstract
Antennas classified as commercial-off-the-shelf (COTS) typically consist of a highly integrated system combining a reflector-type antenna with a multi-functional front-end referred to as a low-noise block (LNB). These integrated terminals receive signals at a radio frequency (RF) and output them at an intermediate frequency (IF). The antenna performance of such terminals is critical for ensuring reliable communication in satellite broadcast reception and other services. However, the performance characterization of these terminals is complicated by their integrated nature, meaning that a two-port measurement is not possible without destructive modification. This paper presents a procedure for characterizing the antenna performance of COTS terminals. The measurement setup includes a near-field scanner and a vector network analyzer (VNA) to capture the antenna's radiation pattern and polarization purity. The challenges of measuring the antenna performance of integrated systems is discussed, providing insight into the impact of design choices on the performance.
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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 | 0.001 |
| 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".