A subharmonic self-oscillating mixer using substrate integrated waveguide cavity for millimeter-wave application
Bibliographic record
Abstract
A low-cost, compact, subharmonic self-oscillating mixer integrated with antenna is presented and demonstrated at 30GHz. This novel configuration makes use of substrate integrated waveguide (SIW) cavity as a resonator in the feedback loop to stabilize the fundamental oscillating frequency. This allows the possibility of building a complete planar receiver, with improved phase noise, as an integrated front-end for millimeter wave systems such as radar and wireless sensor network. It is also an attractive structure for MMIC design. A convenient method free from FET amplifier design is proposed in the work for this kind of self-oscillating mixer, which can also be applied in SIW oscillator design. The circuit, implemented as a down-converter, exhibits an average conversion loss of 8.6dB, and an IF phase noise of -86dBc/Hz at 100-kHz offset. The effects of DC variation on the oscillating frequency and the output P/sub 1dB/ gain compression are measured and 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) | 0.001 | 0.001 |
| 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".