Quasi-air integrated waveguide, transition structure and array antenna

The utility model discloses a quasi-air integrated waveguide, a transition structure and an array antenna, the quasi-air integrated waveguide comprises a first metal conductive layer and a second metal conductive layer, the second metal conductive layer is provided with a main channel along a first direction, and the main channel is provided with a second metal conductive layer along a second direction. A row of conductive connection structures which are arranged at intervals are respectively arranged along two sides of the main channel, and the first direction is the propagation direction of electromagnetic waves; the second metal conductive layer is in gapless conductive connection with the first metal conductive layer through the conductive connection structures arranged at intervals. According to the utility model, the influence of tolerance errors caused by processing and assembling can be reduced, the high engineering applicability is realized, and the high-frequency application in the aspects of loss a