ANTENNA APPARATUS WITH IMPROVED COMPENSATION NETWORK

摘要

An antenna apparatus (100) with first (110) and second (120) antenna elements and a first compensation network (105), said first compensation network (105) comprising a first antenna port (A1) to which said first antenna element is connected and a second antenna port (A2) to which said second antenna element is connected. The first compensation network also comprises first (P1) and second (P2) signal ports, and further comprises transmission lines (130, 140) and/or components (135) of such lengths and impedance levels that the first (P1) and second (P2) signal ports respectively are suitable for receiving and/or transmitting signals at first (f1) and second (f2) frequencies respectively with a frequency separation of a diplex distance used by the apparatus.