Table 5.
Comparison of recent works on antenna sensors for structural health monitoring.
| Description | Resonance Freq | Sensitivity to Strain (kHz/με) * |
Year | Ref. |
|---|---|---|---|---|
| Double split-ring resonator (dSRR) antenna | 2.725 GHz | −1.548 | 2022 | [16] |
| Rectangular microstrip antenna | 2.725 GHz | −2.379 | 2022 | [16] |
| Rectangular microstrip antenna | 2.469 GHz | −2.847 | 2021 | [12] |
| Sierpinski fractal microstrip patch | 2.725 GHz | −1.18 | 2019 | [15] |
| Circular patch antenna | 2.5 GHz | −2.05 | 2018 | [13] |
| RFID folded patch antenna | 911.6 MHz | −0.76 | 2015 | [14] |
* The sensitivity of this category of antenna sensors is usually reported in absolute frequency.