A novel reduced-size 60-GHz 180 degrees coupler using LG-CPW transmission lines
Why this work is in the frame
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Bibliographic record
Abstract
A compact reduced size 60-GHz band (57-64 GHz ) 180 degrees coupler is proposed and implemented in an IPD (Integrated Passive Devices) technology. A size reduction of 75% compared to a conventional 180 degrees coupler has been obtained by using high impedance lower-ground coplanar waveguide (LG-CPW) transmission lines loaded with microstrip opencircuited stubs. The measured results of the coupler showed an amplitude imbalance of less than 0.5 dB and a phase variation from 187 degrees to 184 degrees over a frequency range of 57-64 GHz. The measured return loss is better than 15 dB and the isolation is greater than 24 dB over the frequency band of interest. The measured results confirm the potential of the proposed coupler for low-cost, high-performance, small-size transceiver front-ends for high data rate wireless systems operating in the unlicensed 60-band.
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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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 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 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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