Arrangements for establishing polarisation or beam width over two or more different wavebands

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Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements (combinations of separate active antenna units operating in different wavebands and connected to a common feeder system H01Q21/30) > characterised by the operating wavebands > Arrangements for establishing polarisation or beam width over two or more different wavebands