n Low local oscillation phase noise enhances the digital signal transmitting quality. n A linearity design of low power dissipation promotes the power of transmitter and reduces the non-linearity distortion products. n Outdoor design promotes valid transmitting power and reduces the cost of transmitting feeder loss. n Outdoor design greatly reduces the system cost by eliminating the waveguide. n Aluminum structure design facilitates the maintenance and power update. n Small-sized design fits the project