A Cavity-Backed Dual-Polarized Frequency Reconfigurable Antenna Based on Liquid Metal
Bibliographic record
Abstract
This paper presents a cavity-backed dual-polarized frequency reconfigurable antenna based on liquid metal. Two orthogonal dipoles excited by two coaxial cables are used to achieve dual-polarization. Four movable liquid metal columns, filled in a microfluidic channel, are loaded on the four arms of the dipoles. By changing the positions of the liquid metal columns, the equivalent electrical lengths of the dipoles are changed accordingly, leading to frequency reconfiguration. Moreover, a square cavity is employed as the reflector to realize directional radiation, effectively improving the antenna’s gains. The simulated results obtained by CST software show that the antenna can operate in two working states with frequency bands of 0.68-0.76 GHz and 0.80-0.89 GHz, respectively. The maximum gains of the antenna in the two states can reach 10.3 dBi and 10.8 dBi, respectively. The isolation of the two input ports is higher than 28.5 dB.
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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 | 0.000 |
| Research integrity | 0.000 | 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".