Two-Dimensional Beam Steering Field-Programmable Digital Coded Metantenna for Intelligent Reflecting Surface Applications
Bibliographic record
Abstract
This study presents a novel low-profile 1-bit metantenna based on a unique microwave resonator, optimized for sub-6 GHz frequencies. The resonator features four symmetrically connected quartiles around a central H-shaped microstrip, forming a compact meta-atom with four-fold mirror symmetry. This design is ideal for miniaturization and multi-frequency applications, making it suitable for 6 G wireless communication systems. A single p-i-n diode is loaded in the meta-atom, provides electronic control for 2D reflected beam steering. The metantenna is designed on a single-layer substrate, with the resonator and bias lines on the top layer and a metallic ground plane at the bottom. A metallic shorting via connects the top layer to the ground, providing a negative bias for the diode. The surface impedance is modeled as a lumped parallel resonant circuit. The metantenna achieves two switchable states with a phase difference of 180° and a low reflection loss. MATLAB optimization improves beam steering performance through feed location and aperture phase distribution. Full-wave simulations and theoretical results demonstrate efficient 2-D beam steering of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\pm 40^{\circ}$</tex> with a high aperture efficiency of 20 % at <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\mathbf{3. 9 ~ G H z}$</tex> in both the horizontal and vertical planes, along with a consistent gain of 13 dB.
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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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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) | 0.000 | 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".