Stacked multi-band antenna

The present invention relates to an antenna stack comprising a ground plane and a plurality of antenna layers for separate operating frequency bands, the antenna stack comprising i) an antenna on one antenna layer and at least one antenna array on at least one different antenna layer or ii) at least two antenna arrays, each on a different antenna layer. Each individual antenna layer comprises an antenna or an antenna array that operates on a frequency band that is specific to the respective antenna layer and different from frequency band or bands of other antenna layer or layers. The antenna layer comprises antenna elements manufactured by patterning conductor material on a respective flexible and/or bendable sheet of insulating material. Antenna elements on the respective antenna layer is a circularly polarized crossed dipole antenna element or a crossed dipole antenna element that is electrically configurable into circularly polarized or linearly polarized configuration. Each antenna layer has a predefined distance from the ground plane, wherein the predefined distance between the antenna or antenna array comprised on the respective antenna layer and the ground plane is defined based of the frequency band of the respective antenna or antenna array.

Patent family as of 17.7.2026
EP4315506 A1, EP4315506 B1, EP4315506 C0, FI130625 B, FI20215390 A, US12149010 BB, US2024088566 AA, WO22207969 A1