提出了一种基于SIW的连续横向结CTS(Continuous Transverse Stub)天线设计方法。这种方法采用固定规格的介质板材,利用标准PCB工艺加工制作,解决了实验室研究中加工精度与研制成本的矛盾,为CTS进一步研究提供了实验手段。设计了一种Ka波段的CTS平板波导缝隙阵列天线。结果表明:46.24mm 46.24mm口径CTS天线阵列增益达到24.3dBi,在34.44GHz-35.49GHz频段内,反射系数S11<-10dB。 A design method of Continuous Transverse Stub (CTS) antenna based on SIW is proposed. This method uses a fixed size of the media plate, the use of standard PCB processing technology to solve the laboratory research accuracy and development costs of the conflict, CTS further research provides an experimental means. A Ka-band CTS slab waveguide slot array antenna is designed. The results show that the gain of 46.24mm 46.24mm CTS antenna array reaches 24.3dBi, and the reflection coefficient S11 <-10dB in the frequency range of 34.44GHz-35.49GHz.