Irreciprok kretsanordning, tillverkningsförfarande av sådan samt mobil kommunikationsapparat där denna kretsanordning används

摘要

Three groups of striplines (2, 3, 4) are electrically insulated from each other and arranged in layers such that they cross at an angle of approximately 120 degrees. The striplines are laid over a ferrite substrate (5) which is subject to the field from a permanent magnet (6). Independent claims are included for: (1) a method for producing an isolator; (2) and a mobile communication device using an isolator according to the invention.