A smart antenna apparatus includes a casing, which supports an omnidirectional antenna array; a plurality of transceivers electrically connected with the antenna array; and a format converter and booster device electrically connected between the plurality of transceivers and a network port, said format converter and booster device comprising a multiplexer/de-multiplexer circuit for encoding plural USB signals from the plurality of transceivers to the network port and for decoding plural USB signals from the network port to the plurality of transceivers.