A New Design of a Spiral UHF RFID Tag Dipole Antenna Mounted on Metallic Objects
Bibliographic record
Abstract
This paper deals with the design of a new structure of an Ultra High Frequency (UHF) dipole antenna for RFID TAG. To design such antenna, we have to optimize such structure by taking into account the input impedance matching by reaching an input impedance of the antenna which is equal to the conjugate one of the microchips, the implementation of this type of antenna on an object with a metallic surface, influences the efficiency of these parameters. Knowing that the manufacturing cost of an antenna is one of the most important factors that must be taken into consideration during the design and realization phase. To achieve this goal, this paper deals with the design of a new and a simple Ultra High Frequency RFID tag antenna formed from a folded spiral dipole printed on a FR4 substrate having a dielectric constant <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\varepsilon \mathrm{r}=4.4$</tex> , and loss tangent <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\tan\delta=0.02$</tex> , the antenna structure is matched to an “ALIEN HIGGS 4” UHF microchip in strap packaging, it can be mounted on a metallic surface, and it should be noted that the structure does not include metal vias or short-circuiting stubs.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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) | 0.000 | 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 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".