Offset-feed type microwave antenna

The invention discloses an offset-feed type microwave antenna which comprises a feed source, a first metamaterial panel and a reflection panel attached on the back of the first metamaterial panel, wherein an angle theta which is not equal to 180 DEG is formed between a connecting line of the feed source and the center point of the outer surface of the first metamaterial panel. Spherical electromagnetic waves sent by the feed source are refracted after passing through the first metamaterial panel and then reflected by the reflection panel and then refracted through the first metamaterial paneland transmitted in a form of planar electromagnetic waves. The offset-feed type microwave antenna is manufactured by adopting a metamaterial principle, so that the antenna is independent of limits ofa conventional convex lens shape, a conventional concave lens shape and a conventional paraboloid shape, can adopt a panel shape or any shape, and has the advantages of smaller thickness, smaller volume, more convenience for processing and manufacturing, low cost and good gain effect.