An Ultra-Compact ME Antenna Design for Implantable Wireless Communication

In this work, a new ultra-compact antenna design based on magnetoelectric coupling effect for implantable wireless communication is introduced. This ME antenna is driven by acoustic wave and the resonance frequency is decided by the geometric size of resonator. An NPR antenna is fabricated by MEMS technology and tested. The size of one antenna resonator is 8×350µm2 and the whole antenna is designed to 730×940µm2 with 16 arrays in parallel. An antenna gain of −54.81dBi is achieved at the resonance frequency of 371.125MHz. The Q-factor of 123.1 is calculated by MBVD model. Because of the short wavelength of acoustic wave, the antenna size is effectively scaled down, which gives a new solution for the miniaturization of entire implantable device.