Integration of traveling-wave photodetector and coplanar-fed log-periodic antenna for terahertz source generation
Bibliographic record
Abstract
In this paper, integration of high-power travelling-wave photodetector (TWPD) and broadband log-periodic antenna with coplanar waveguide (CPW) fed is proposed and designed for terahertz (THz) generation. In this integrated device, THz signal is generated and radiated by optical signals coming from telecommunication lasers in the range of 1550-nm. Design and analysis of the edge illuminated PIN-type TWPD up to 1 THz are studied and then phase velocity and loss of the device are compared with the measured results. Also, two bandwidth limitation factors of the TWPD including optical and microwave phase velocity mismatch as well as carrier drift velocity are discussed. In addition, the structure of conventional log-periodic antenna with coplanar strip (CS) fed is modified and integrated with the CPW output of the TWPD. Design and analysis of this broadband complementary CPW-fed antenna are presented in the paper.
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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) | 0.000 | 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 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".