In this paper, two novel miniaturized satellite navigation antennas based on sub- strate integrated waveguide are proposed in this paper. A single-layer SIW annular slot antenna is studied and designed at first. Then through overlay a patch on top layer, a multi-layer SIW antenna is designed. The first antenna covers the Beidou satellite navigation system (BDS) B1I band with circular polarization (CP) and the second one covers the BDS B1I and B2I band with dual circular polarization. Performance has been proved to be better than microstrip navigation antennas in gain and front-to-back ratio (FBR) with the similar size. Both simulation and test results are given respectively.