Mutual Coupling Reduction in a DGS-Incorporated Millimeter-Wave MIMO Antenna Array
Bibliographic record
Abstract
This paper presents a T- and E-shaped defected ground surface (DGS) to reduce the mutual coupling in a tightly spaced MIMO antenna array in the millimeter-wave (MMW) frequency range. By carefully optimizing the dimensions and positions of the slots on the ground plane, a 50 dB maximum mutual coupling reduction is achieved over the 62-77 GHz bandwidth (21.6 %), with an edge-to-edge spacing of 0.55 mm (0.13λ), where λ is the free-space wavelength, at the center frequency of 70 GHz. The carefully etched ground plane also improved the bandwidth, especially between the 60-70 GHz band, with good radiation properties. These results make the proposed tightly spaced, highly isolated MMW antenna array a good candidate for MMW V-band applications.
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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 | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 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".