Design and Experimental Evaluation of Miniaturized Monopole UHF RFID Tag Antennas
Bibliographic record
Abstract
This letter reports the design and experimental evaluation of three compact printed monopole antennas for UHF RFID applications. The antennas that include folded, 2-D meander, and 3-D meander monopole designs are inductively coupled to RFID chips and are fabricated using a 1.524-mm-thick Rogers RB4350B substrate with the relative permittivity of 3.66. Experimental results reveal that these tags cover the worldwide UHF RFID operation band (860-960 MHz) with a maximum readable range of 6.3 m for the folded monopole, 5.39 m for the 2-D meander, and 5.24 m for the 3-D meander monopole designs with an effective isotropic radiated power of 3.28 W. A method for measuring the radiation pattern of an assembled UHF RFID tag without the use of any additional matching circuits or feeding wires is presented. This method is used to measure the radiation pattern of the fabricated 3-D meander monopole tag antenna.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| 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".