A polarization/frequency interchangeable patch for a modular wearable textile antenna

A concept of modular textile antennas based on commercial snap-on buttons has been recently proposed for wearable applications. This concept has been demonstrated to provide passive system reconfigurabilities in resonance frequency, polarization and/or radiation characteristics using a common feeding structure as a base. In this paper, as a further illustration of the versatility of the modular concept, a circular patch module with a rectangular flap cut in the middle is proposed. This module can provide interchangeability between right-handed circular polarization (RHCP), left-handed circular polarization (LHCP) and linear polarization (LP), as well as passive reconfigurability in resonance frequency for LP, through simple module rotation and different flap configurations (opened or closed).Shengjian Jammy Chen, Damith Chinthana Ranasinghe, and Christophe Fumeau