Micro band slot array antenna

The invention provides a thinner, lighter, lower-bypass level plate-type micro band gap array antenna, replacing routine all metal guide face with fine-new artificial high impedance magnetic conduction face as a reflection back plate of the antenna array, able to reduce the space between the back plate and the gap array face from lambda/4 or 3 lambda/4 down to lambda/10 below (the desired space is zero), thus largely reducing the thickness of the antenna. Because foam medium is ordinarily filled between the back plate and the gap array face to support and isolate, the reduction of the space largely reduces the use quantity of the needed foam medium, thus largely reducing the large-scale antenna weight. Simultaneously, because the new magnetic conduction back plate has special electromagnetic band gap property, it can prohibit the propagation of surface wave and parallel plate mode electromagnetic wave, thus effectively reducing the bypass level of the antenna array. The artificial high impedance magnetic conduction face can be applied to various antenna arrays, such as 1x8, 2x8, 4x4, and other arrays.