Single-layer dual-passband substrate integrated waveguide filtering antenna

The invention provides a single-layer dual-passband substrate integrated waveguide filtering antenna. The antenna comprises a first resonant cavity, a second resonant cavity and a third resonant cavity, the first resonant cavity is coupled with the second resonant cavity through the first coupling window and is coupled with the third resonant cavity through the second coupling window; the width directions of the first coupling window and the second coupling window are vertical to each other; wherein the first resonant cavity is internally provided with a coaxial feed port, the second resonant cavity is internally provided with a first groove and a first metal through hole group, and the second resonant cavity is internally provided with a second groove and a second metal through hole group. The antenna is simple in structure, low in manufacturing cost, good in isolation performance between the two passbands, high in selectivity in the passbands, high in reliability and wide in bandwidth. 本发明提供一种单层双通带基片集成波导滤波天