Metamaterial-Based Circularly Polarized Patch Antenna for cmWave Full-Duplex mMIMO
Bibliographic record
Abstract
A wideband, dual-layer metamaterial-based patch antenna operating at 10 GHz is proposed for centimeter-wave full-duplex (FD) massive multiple-input multiple-output systems. Full-wave simulations reveal an effective and wide impedance bandwidth of over <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$19 \%(1.9 \text{GHz})$</tex>, spanning from 9.5 GHz to 11.4 GHz. The antenna achieves a gain of 5.5 dB with a radiation efficiency exceeding 98 %. The introduction of a specially designed L-shaped cutting slot enables high circular polarization (CP) purity, achieving an axial ratio of 0.6 dB at 10.25 GHz and better than 3 dB across a 1.3 GHz (13 %) bandwidth. The resulting pure CP antennas support the creation of cross-polarized Tx-Rx antenna element pairs for FD operation. An improvement in Tx-Rx isolation of better than <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\text{1 0 ~ d B}$</tex> is observed, reducing mutual coupling to better than -40 dB with an element separation of 4.6 cm (1.5 wavelengths).
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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 | 0.001 | 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 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".