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 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 | 0.000 |
| 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".