Quarter-Dual-Mode SIW and Microstrip Line Resonator Stabled Feedback Oscillator
Why this work is in the frame
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Bibliographic record
Abstract
In this letter, a low-phase noise feedback oscillator based on a quarter-dual-mode (QDM) substrate-integrated waveguide (SIW) and microstrip line is proposed. By combining a QDM SIW resonator with a microstrip line, a third-order transmission response can be achieved without increasing the occupied area. Two transmission zeros (TZs) are generated at the upper passband to increase the group delay peak and an additional TZ at <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$2f_{0}$ </tex-math></inline-formula> to suppress the second harmonic signal. The compact feedback-type oscillator using QDM SIW is designed, fabricated, and measured for the first time, which a circuit size is just about 930 mm2. The experimental results exhibit an output power of 0.22 dBm with a phase noise of −134.66 dBc/Hz at a 1-MHz frequency offset from the oscillation frequency. The oscillation frequency is 10.1 GHz and the corresponding suppression of the second harmonic signal is more than 52 dBc.
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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 | 0.000 |
| 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 it