https://askelectronics.co.ke/product/gsm-gprs-3g-built-in-circuit-board-antenna-1-13-line-15cm-long-ipex-connector-3dbi-pcb-small-antenna-for-sim800-sim908-sim900/?add-to-cart=14851
GSM/GPRS/3G Built In Circuit Board Antenna 1.13 Line 15cm Long IPEX Connector (3DBI) PCB Small Antenna for Sim800 Sim908 Sim900