A Cavity-Backed Polarization Reconfigurable Antenna Based on Liquid Metal
Bibliographic record
Abstract
This paper proposes a frequency and polarization reconfigurable dual-band antenna using liquid metal. The radiating part of the antenna consists of two orthogonally printed strip dipoles with consistent shapes and liquid metal. The two intersecting dipoles are fed by a coaxial cable, and the liquid metal is enclosed in channels made of polytetrafluoroethylene (PTFE). By utilizing the fluidity of liquid metal to change its position, the antenna can achieve linear polarization operation within the frequency range of 1.54 GHz to 1.87 GHz and 2.24 GHz to 3.02 GHz. In the circular polarization mode, its impedance bandwidth covers 1.51 GHz to 1.69 GHz, and the axial ratio bandwidth is 1.62 GHz to 1.74 GHz. To further enhance the performance of the antenna, four corner parasitic patches are introduced between the two intersecting dipoles. At the same time, the cavity-backed reflector of the antenna ensures its powerful directional radiation characteristics and improves gain. According to simulation results from the CST Microwave Studio®, the antenna achieves the peak gain of up to 9.92 dBi.
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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 | 0.000 |
| 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 | 0.001 |
| Research integrity | 0.001 | 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".