Highly integrated 60GHz SSB MMIC mixer with no DC power consumption based on subharmonic LO and CPW circuits in GaAs pHEMT technology
Bibliographic record
Abstract
This paper presents the results of a novel miniature single sideband (SSB) subharmonic direct upconverter GaAs MMIC with no DC power consumption and developed in uniplanar technology. The mixer uses 100MHz I and Q signals to directly modulate the second harmonic of a 30GHz carrier, producing the required 60.1GHz RF output. Two pair of antiparallel diodes reduce feed-through of the fundamental 30GHz signal to the RF output while novel coplanar waveguide centre conductor-based structures provide matching. This 2.1mm2 chip also uses a reduced-size Wilkinson divider based on asymmetric coplanar stripline and a standard size CPW 90° coupler. It exhibits a conversion loss of less than 11dB and a high image rejection ratio of greater than 20dB over a wide frequency range from 52GHz to 61GHz.
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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 | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".