In recent years, surface acoustic wave (SAW) temperature measurement technology has received wide attention because of its passive and wireless characteristics. This technology can be applied to the temperature measurement in the cable joints. However, the SAW temperature measurement signal transmission is hindered by the influence of the material and structure of the cable joints, which seriously affects the temperature signal detection. Based on the structure and material of DWG-630A cable joints, this paper designs an antenna that can be used for temperature measurement in cable joints. Through the theoretical analysis, simulation and experimental verification, it is verifies the design is practical. The results show that it is feasible to transmit SAW temperature signal through the cable joints and has good gain and radiation effect in the operating frequency band.