Rubber Duck Antenna 1. Rubber stick antenna is the most widely used indoor antenna, its main interface is SMA Male straight and elbow; also can be customized; 2. The product features high cost performance, rich frequency, good VSWR performance, stable signal, small loss, small size and convenient installation; 3. It is widely used in computer routing communication equipment and wireless communication of Internet of things products, such as: intelligent electricity meter, intelligent signal acquisition, LORA scheme, nb-iot scheme, WIFI module scheme and 4G module scheme.