Arrangements for simultaneous operation of aerials on two or more different wavebands

HELECTRICITY H01Electric elements H01QAERIALS

H01Q5/00Arrangements for simultaneous operation of aerials on two or more different wavebands

H01Q5/10Resonant aerials H01Q5/15for operation of centre-fed aerials comprising one or more collinear, substantially straight or elongated active elements H01Q5/20characterised by the operating wavebands H01Q5/22RF wavebands combined with non-RF wavebands H01Q5/25Ultra-wideband [UWB] systems H01Q5/28Arrangements for establishing polarisation or beam width over two or more different wavebands H01Q5/30Arrangements for providing operation on different wavebands H01Q5/307Individual or coupled radiating elements, each element being fed in an unspecified way H01Q5/314using frequency dependent circuits or components H01Q5/321within a radiating element or between connected radiating elements H01Q5/328between a radiating element and ground H01Q5/335at the feed H01Q5/342for different propagation modes H01Q5/35using two or more simultaneously fed points H01Q5/357using a single feed point H01Q5/364Creating multiple current paths H01Q5/371Branching current paths H01Q5/378Combination of fed elements with parasitic elements H01Q5/385Two or more parasitic elements H01Q5/392the parasitic elements having dual-band or multi-band characteristics H01Q5/40Imbricated or interleaved structures Combined or electromagnetically coupled arrangements H01Q5/42using two or more imbricated arrays H01Q5/45using two or more feeds in association with a common reflecting, diffracting or refracting device H01Q5/47with a coaxial arrangement of the feeds H01Q5/48Combinations of two or more dipole type aerials H01Q5/49with parasitic elements used for purposes other than for dual-band or multi-band H01Q5/50Feeding or matching arrangements for broad-band or multi-band operation H01Q5/55for horn or waveguide aerials