This paper addresses the challenges faced by outdoor antenna cabinets,such as harsh surrounding envi-ronment,limited usage space,and requirement for lightweight design.A sealed antenna cabinet structure design scheme is proposed to meet the technical requirements of the antenna cabinets for lightweight,miniaturized,and rain and dust proof performance,and to ensure adequate heat dissipation under high temperature conditions.The entire cabinet is designed with a hexagonal shape,with a bottom flange disc of a diameter of 220mm.The cabinet has an overall height of 105mm.The cabinet is made of 6000 series aluminum alloy which has good heat dissipation properties.In addition,a forced air cooling method is used for the power amplifier module which generates the most heat inside the cabinet.A separate area for fan installation and heat dissipation fins is designed.Thermal simulation analysis is conducted using the UG simulation module.The results show that the chip temperature rises to 78.6℃when the ambient temperature is 55℃,which is below the allowable temperature of 90℃,meeting the operational requirements.The antenna cabinet design is rational and effective.
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