Wideband low cost planar mono‐pulse comparator circuit
Bibliographic record
Abstract
A novel wideband planar single layer mono‐pulse comparator for the application of mono‐pulse angle of arrival and target detecting is presented. This low cost comparator consists of three new broadband differential phase shifters and four 3 dB hybrid commercial couplers to generate sum and delta (difference) output channel frequency response. The operating frequency ranges in S band over one octave from 2 to 4 GHz. The comparator circuit is designed and fabricated on single layer RO4003C microstrip board with the simple and low cost PCB process. The amplitude imbalance and phase shift ripple between the four input channels and two sum and delta output channels are <1 dB and 2.5°, respectively. By integrating a four‐arm spiral antenna and the proposed comparator, a mono‐pulse antenna is designed and fabricated. In the frequency range from 2 to 4 GHz, the sidelobe level is ≤17 dB, the sum gain is measured as >3 dBic, and the null depth is better than 25 dB. The obtained sum and difference radiation characteristics make the proposed mono‐pulse antenna promising for target detecting and tracking in the two dimension applications.
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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 | 0.000 | 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 | 0.001 | 0.001 |
| Open science | 0.001 | 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".