A Dual-Polarized Antenna Array With Enhanced Interport Isolation for Far-Field Wireless Data and Power Transfer

Yiming Zhang, Jia-Lin Li

Research output: Contribution to journalJournal articleResearchpeer-review

9 Citations (Scopus)
41 Downloads (Pure)

Abstract

An in-band full-duplex scheme is proposed for simultaneous power transfer and data delivery in far-field wireless sensor systems. To realize two independent links for power and data delivery, a high isolation level between the local transmitter and receiver of the in-band full-duplex system is critical. An RF front-end architecture, here standing for a dual-polarized antenna array with its feeding network, is presented and detailed in this paper. By using the proposed architecture, self-interference can be well canceled within a wide frequency band, leading to a high inter-port isolation level. To demonstrate the performance of such a front-end structure, an on-board prototype has been developed and examined experimentally. Measured results show that the impedance bandwidth of the developed antenna is from 4.5 to 5.8 GHz. The achieved inter-port isolation is higher than 65 dB from 4.4 to over 6.0 GHz, and over 71 dB from 5.36 to 5.82 GHz, indicating a very high self-interference suppression level. Furthermore, RF power and video transferring experiments are carried out, and good consistency with calculated results is observed.
Original languageEnglish
JournalIEEE Transactions on Vehicular Technology
Volume67
Issue number11
Pages (from-to)10258-10267
Number of pages10
ISSN0018-9545
DOIs
Publication statusPublished - 14 Aug 2018
Externally publishedYes

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