Dynamic RF Beam Steering Using Photo-Induced Fresnel Zone Plates on Solar Cells
Bibliographic record
Abstract
Optically reconfigurable beam steering at millimeter-wave (mm-wave) frequencies requires engineered semiconductor surfaces with high-power optical sources. This article presents the first demonstration of beam steering using a commercially available monocrystalline silicon solar cell, directly exploiting its intrinsic photovoltaic properties for electromagnetic wave modulation. Dynamically reconfigurable Fresnel zone plate (FZP) patterns are projected onto the solar cell with low-power visible light (0.043 W/cm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup>), enabling reconfigurable beam steering across the Ka-band (26.4–40 GHz). The solar cell’s back-contact design preserves RF transparency while providing polarization isolation up to −25 dB, and measurements show 10-dB modulation depth under illumination. Simulations and experiments confirm diffraction-based steering of a 30-GHz source. Furthermore, a 5G new radio (NR) data-link experiment at 28.03 GHz using 256-QAM modulation demonstrates the system’s capability to sustain high-rate communication links. This fabrication-free and accessible approach establishes a practical path toward reconfigurable mm-wave beam steering and adaptive RF devices.
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How this classification was reachedexpand
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) | 0.000 | 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) | 0.000 | 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 teacher head, 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".