TY - JOUR IS - 16 JO - Sensors PY - 2022 SN - 1424-8220 VL - 22 AU - Zhang C AU - Huang J AU - Shi X AU - Dong G AU - Cai J AU - Liu G DO - 10.3390/s22166091 LA - en N1 - FEMU ID: 48199; EMF-Portal URL: https://www.emf-portal.org/en/article/48199 SP - 6091 TI - A Compact Ultra-Thin 4 × 4 Multiple-Input Multiple-Output Antenna UR - https://www.mdpi.com/1424-8220/22/16/6091/pdf?version=1660558595 ER -