Ka-Band Vector Reflectometer Based on Simple Phase-Shifter Design
Bibliographic record
Abstract
An automated handheld simple vector reflectometer design for complex-reflection-coefficient measurements at 35.5 GHz (Ka-band, 26.5-40 GHz) is presented. The proposed reflectometer is based on a standing-wave voltage measuring device and an electronically controlled and custom-designed millimeter-wave phase shifter. The phase shifter consists of p-i-n diode-loaded subresonant slots cut into the wall of a Ka-band waveguide. This paper describes the design of the phase shifter and the overall reflectometer. A comparison of the measurement results, for several loads, using this reflectometer and an Agilent E8364B performance network analyzer is also presented showing the measurement accuracy of the proposed reflectometer. Finally, the utility of this reflectometer for imaging complex composite structures, incorporating a high-resolution synthetic aperture imaging technique, is also demonstrated.
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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 | 0.000 | 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".