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EnglishA compact three-port tri-band circularly polarized (CP) antenna for radio-frequency identification (RFID) technique is introduced. Four inverted-F radiating elements fed with a 90° phase delay feeding network realize the CP radiation at the FCC UHF-RFID band (0.902–0.928 GHz). With the slot-coupled feeding technique, Corner-truncated slot and patch have been employed to achieve CP radiation at MW-RFID bands (2.4–2.485/5.725–5.875 GHz). Decoupling structures are implemented to obtain excellent 20 dB port isolations during all operating bands. The relative impedance bandwidths in the three bands are 6.6%, 5.3%, and 5.1%, respectively, with peak gains of 2, 5.1, and 5.7 dBic.
| Autori interni: | ||
| Autori: | Zhang, E.; Michel, A.; Nepa, P.; Qiu, J. | |
| Titolo: | Multifeed tri-band circularly polarized antenna for UHF/MW-RFID application | |
| Anno del prodotto: | 2022 | |
| Abstract: | A compact three-port tri-band circularly polarized (CP) antenna for radio-frequency identification (RFID) technique is introduced. Four inverted-F radiating elements fed with a 90° phase delay feeding network realize the CP radiation at the FCC UHF-RFID band (0.902–0.928 GHz). With the slot-coupled feeding technique, Corner-truncated slot and patch have been employed to achieve CP radiation at MW-RFID bands (2.4–2.485/5.725–5.875 GHz). Decoupling structures are implemented to obtain excellent 20 dB port isolations during all operating bands. The relative impedance bandwidths in the three bands are 6.6%, 5.3%, and 5.1%, respectively, with peak gains of 2, 5.1, and 5.7 dBic. | |
| Digital Object Identifier (DOI): | 10.1002/mmce.22939 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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