Electric-Thermal Co-Design of High Temperature Resistance Ceramic Dielectric Rod Antenna

A high temperature resistant ceramic dielectric rod antenna is presented in this paper. The phase center of dielectric rod antenna is at its top. Ceramic material can also bear high temperature without destroying electrical properties because of thermal stability of ceramic materials. In addition, the heat conduction of ceramics is much smaller than that of metals, which can play a heat insulation effect. Hence, the radiation part of dielectric rod antenna is inserted into the thermal insulation layer so that its top is close to the bottom of the heat shield plate. It can solve the influence on the radiation performance of the antenna due to the "Horn Effect" formed by the gold plating and the bottom metal plate. A broadband ceramic dielectric rod antenna is proposed by electric-thermal co-design. The feed port temperature is less than 100 ℃, which the cable usually can bear the maximum temperature.