Characterization a Rectifying Antenna under Non-Stationary Propagation Conditions
Bibliographic record
Abstract
In most research works, radiofrequency energy converter circuits are characterized by only their output DC voltage level and their conversion efficiency. These two characteristics are defined for a constant RF input power level. This work proposes a characterization of the performance of a rectifying antenna (rectenna) under non-static operating conditions. A rectenna design method is intended for the harvesting of ambient RF energy. The ambient power density levels in the 2.4 GHz bands are measured and reported in this work. A rectenna optimized to achieve optimal performance at the average detected power is proposed. Unlike previous work, the rectenna is characterized in terms of output DC voltage, conversion efficiency, and the Battery Recharging Time (BRT). It is also evaluated the performance of a Wireless Sensor Node (WSN) powered by the proposed rectenna. An average signal power of -1.55 dBm is obtained, and considering a mesh type network, it is obtained that a WSN can transmit data of a size of 4 kbits at more than 150 m based on the detected ambient power.
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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 | 0.001 |
| 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 | 0.000 | 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".