DESIGN OF AN ULTRA-WIDEBAND UHF DISCONE ANTENNA BASED ON UNMANNED SHIP PLATFORM
Bibliographic record
Abstract
This paper designs an ultra-wideband UHF discone antenna suitable for unmanned ship platform.The signal feedback position of the antenna has been changed compared to traditional discone antenna-the coaxial feeder is drawn forth from the top of the cyclo-plate,and the core feeder inside the coaxial feeder has been extended into the interior of the cone.Using computer simulation software HFSS to simulate,the simulation results show that the bandwidth with return loss less than-15 dB is from 285 MHz to 950MHz;at the bandwidth from 300 MHz to 390 MHz,the return loss S_(11) is less than-20 dB,at the frequency of 340 MHz,the S_(11) reaches-54.3dB,the maximum gain is 2.56dB;at the bandwidth from 825 MHz to 875 MHz,the S_(11) is less than-20 dB,at the frequency of 850 MHz,the S_(11) reaches-21.5dB,the maximum gain is 3.79dB;at the bandwidths abovementioned,the radiation direction of the antenna is almost omni-directional,and meets the requirements of radiation direction for unmanned ship platform in the emergency communication of water rescue.
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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 | 0.001 | 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".