Electrically Tunable Substrate Integrated Waveguide Equalizer With Stable Insertion Loss in High Frequency
Bibliographic record
Abstract
ABSTRACT In this letter, a novel design for an electrically tunable substrate integrated waveguide (SIW) equalizer that maintains a stable insertion loss at high frequencies, is proposed. The SIW equalizer is composed of various parallel units consisting of microwave resistor ( R ) and varactor diode ( C ). Different resistance and capacitance values, forming a complex impedance, are achieved through PIN and varactor diodes under different DC biases, respectively. It results in greater losses in the low‐frequency range compared to the high‐frequency range, achieving an equalization effect. Moreover, because ideal capacitors do not contribute to signal loss, the loss in the high‐frequency range remains minimal and stable under certain conditions. Experimental results indicate that the equalization range in the Ku ‐band is 0.30–9.75 dB with a DC voltage range of 0–4 V, and the insertion loss change in the high‐frequency band is only 0.5 dB. For the equalizer operating in the Ka‐band, within a DC voltage range of 6–14 V, the equalization range is 0.30–16.60 dB, with a change in insertion loss of only 0.12 dB at high frequencies. The return losses of equalizers are all better than −12.4 dB and −11.6 dB, respectively, in Ku ‐ and Ka ‐band.
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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 | 0.001 | 0.001 |
| 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".