Reconfigurable Dual-Band Oam Antenna for Microwave and Millimeter-Wave Applications
Bibliographic record
Abstract
Microwave and millimeter-wave technologies are increasingly integrated into future wireless communication systems. As a result, system components must operate effectively across both frequency bands. Antennas with Orbital Angular Momentum (OAM) modes, capable of enhancing system capacity through multiple mode multiplexing, have emerged as a promising candidate technology. In this paper, a reconfigurable OAM antenna is proposed for dual-band operation at microwave and millimeterwave frequencies. The uniform circular array (UCA) features a dual-port design that enables OAM mode switching through selective port feeding. By feeding one port while terminating the other with a 50Ω load, the antenna maintains system stability and efficiently generates either the +1 or −1 OAM modes without requiring additional mechanisms such as phase shifters or external circuits. Furthermore, the simplified dual-port feeding design allows flexible adjustment of the operating frequency based on the relationship between frequency and antenna size. In this study, two UCAs were designed and optimized to operate at 5.8 and 28 GHz, respectively, achieving reconfigurable OAM mode switching through a selective port feeding.
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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 | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 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".