BI9BOH The output cable is unbalanced, while the antenna is balanced. In this case, a balance-to-unbalance converter is needed, typically a 1:1 balun. It can also be used without a balun, but the cable jacket will participate in radiation, affecting the antenna, and the cable jacket also has common-mode current that can affect the equipment.
闽ICP备2021006864号-7
闽公网安备35020602002794号