Year: 2025
Type: conference-paper
Abstract: This paper presents a low-profile, single-layer wideband metamaterial-inspired linear polarized multiple-input multiple-output antenna array with an integrated rectifier for simultaneous wireless information and power transfer applications. The antenna consists of eight elements fabricated on Rogers 4350 substrate with a defected ground structure, where four ports are dedicated to wireless information transfer and four ports are directly connected to a rectifier for wireless power transfer. The rectifier employs four SMS7630 diodes and is directly matched to the antenna with input impedances of$34-\mathrm{j}57\Omega$and rectifier impedance of$34+\mathrm{j}57\Omega$, delivering 0.9 V output voltage with 75% efficiency into a$1000 \Omega$load. The total array occupies$0.599 \times 0.33\lambda$, operating over 3.2-4.3 GHz, with a peak gain of 5.5 dBi and isolation below -20 dB between all ports. Metamaterial-inspired elements enhance impedance and bandwidth, providing stable polarization. MIMO performance is evaluated via envelope correlation coefficient, diversity gain, and mean effective gain, confirming suitability for SWIPT-enabled sensors, IoT devices, and other low-power wireless systems.
Language: English
Topic: Antenna Design and Analysis
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7129253187