at the feed, e.g. for impedance matching

Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements > Arrangements for providing operation on different wavebands > Individual or coupled radiating elements, each element being fed in an unspecified way > using frequency dependent circuits or components, e.g. trap circuits or capacitors > at the feed, e.g. for impedance matching

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) > Arrangements for providing operation on different wavebands > Individual or coupled radiating elements, each element being fed in an unspecified way > using frequency dependent circuits or components, e.g. trap circuits or capacitors > at the feed, e.g. for impedance matching