A Planar Low-Profile Meander Antenna Design for Wireless Terminal Achieving Low RF Interference and High Isolation in Multi-Antenna Systems
In this article, a meander line internal antenna used for wireless terminal is proposed. The current of this antenna is mostly distributed on the antenna radiator itself, rather than on the main board of the wireless device. As a result, the chance of having radiofrequency (RF) interference issues, which usually result in receiver desensitization in wireless radios, can be significantly reduced. The antenna has good radiation performance in the vertical polarization with a low physical profile, compared with the existing antenna designs for typical wireless terminals. The antenna has efficiency similar to the monopole antenna with much less reference/ground plane dependence, achieving lower RF interference, which is demonstrated by the noise coupling measurements in a predefined digital clock - antenna configuration. Furthermore, the mutual coupling (i.e., isolation) between two such antennas is studied and the envelope correlation coefficient between the two antennas is found to be low. A router assembled with the two proposed antennas is tested, and the total isotropic sensitivity is found lower compared with monopole antennas, due to the characteristics of low RF interference and high isolation of the proposed antenna.
Y. Xiao et al., "A Planar Low-Profile Meander Antenna Design for Wireless Terminal Achieving Low RF Interference and High Isolation in Multi-Antenna Systems," IEEE Transactions on Electromagnetic Compatibility, vol. 64, no. 3, pp. 674 - 682, Institute of Electrical and Electronics Engineers, Jun 2022.
The definitive version is available at https://doi.org/10.1109/TEMC.2021.3133569
Electrical and Computer Engineering
Keywords and Phrases
Envelop correlation coefficient (ECC); isolation; low profile; planar meander antenna; radio-frequency (RF) interference; receiver desensitization; reference/ground plane dependence; vertical polarization; wireless terminal
International Standard Serial Number (ISSN)
Article - Journal
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01 Jun 2022
Natural Science Foundation of Hunan Province, Grant 2021JJ30143