A Wideband Analog Vector Modulator Phase Shifter Based on Non-Quadrature Vector Operation
Bibliographic record
Abstract
Phase shifters are essential components of phased array systems, which are crucial to radar and wireless communication systems. New-generation telecommunication and radar systems often require strict phase shifter performance metrics, such as phase resolution and bandwidth, to perform fine beam scanning, which helps increase pointing accuracy. Meanwhile, practical vector modulator phase shifters, which employ quadrature signal operation, typically have digital control below 7 bits. In this regard, a vector modulator phase shifter based on non-quadrature signal operation and covering the lower S-band and upper C-band is proposed and implemented in this work. The proof-of-concept printed circuit board (PCB) prototype exhibits more than 360° continuous phase shift with more than 50% fractional bandwidth. In addition, it achieves a median gain of 0.8 dB and a size of 0.9 λg2 with the inclusion of an output gain-block amplifier. The relatively wider bandwidth, smaller size, and fine resolution of the proposed phase shifter approach make it a potential candidate for new-generation ultrawideband communication and radar systems.
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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 | 0.001 |
| 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".