Broadband Microwave Passive Step Attenuator Based on Imperfect Matching Theory
Bibliographic record
Abstract
ABSTRACT This paper presents an innovative design approach for a broadband passive step attenuator, utilizing the imperfect matching theory in the design process. To bring the actual performance of the attenuator closer to theoretical predictions, TaN resistors with the low parasitic capacitance have been redesigned. Measurement results demonstrate that the attenuator designed in this study delivers attenuation values ranging from 0 to 11 dB, with a step value of 0.5 dB. Over the wide operating frequency band from 9.65 to 30.8 GHz, the attenuator consistently maintains return losses all better than 15 dB, and insertion loss flatness within ±0.3 dB, particularly when attenuation values exceeding 3 dB. The attenuator can be realized simply with an uncut microstrip transmission line and a grounding structure, requiring no external power supply or control signals. Furthermore, it can be integrated into conventional RF circuit manufacturing processes, offering a low‐cost and high‐performance solution for a required attenuation with a straightforward design.
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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 | 0.001 |
| 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".