An ultrathin, compact ecofriendly antenna suitable for IoT applications around 2.45 GHz is achieved as a result of exploring the use of Tencel fabric for the antenna’s design. The botanical ecofriendly Tencel is electromagnetically characterized, in terms of relative dielectric permittivity and loss tangent, in the target IoT frequency band. To explore the suitability of the Tencel, a comparison is conducted with conventionally used RO3003, with similar relative dielectric permittivity, regarding the antenna dimensions and performance. In addition, the antenna robustness under bent conditions is also analyzed by measurement. To assess the relevance of this contribution, the ultrathin ecofriendly Tencel-based antenna is compared with recently published antennas for IoT in the same band and also, with commercial half-wave dipole by performing a range test on a ZigBee-based IoT testbed.

中文翻译：

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为生态友好型物联网天线铺平道路：基于Tencel的超薄紧凑型单极天线及其在ZigBee中的应用。

通过探索在天线的设计中使用Tencel织物，实现了一种超薄，紧凑的环保天线，适用于2.45 GHz左右的IoT应用。植物生态友好型天丝在目标物联网频段中具有相对介电常数和损耗角正切的电磁特性。为了探究天丝的适用性，就天线尺寸和性能与具有相似相对介电常数的常规使用的RO3003进行了比较。另外，还通过测量来分析弯曲条件下的天线坚固性。为了评估这一贡献的相关性，将基于超薄环保型天丝的天线与最近发布的同一频段的物联网天线进行了比较，此外，