In this paper, a novel "green" inkjet-printed monopole antenna topology for integrated RFID-reader and cellular communication functionalities is presented. The antenna is loaded with a parasitic strip to fulfil the design requirements for the required dual-band operation. The design characteristics of the antenna are verified for paper-based substrates through extensive simulated parametric analysis and optimization.
The printed 101ol ded loop antenna and the rectan6ulii.r loop mtenna arc nndyaed 1ci possible cnnclidatc a.utenna.3 for the exkting wrl future mobile: systcms, respectiv~l]?. FDTD is used to calculate radiation patterns and iuput imprda~~ce. The cdculated results are in good agreement with mcic. snrements. The proposed a.ntennas meet the dcsip reqnircnwnts for thc mobile networks.
104-TRODUCTIONMobilc coxrununicaliorts represent a rj.pidly @om-ins and iucie,zsint;iy important e c p c n t of the tdecommu iiicafion industry. Digital wirclc:ss communication Systeus haye alrcasly been deployed in Europe, U.S.A., Asia and .Ta.pm to accomodatc customer dsmand. The demand for wireless communication services l r i l s grown tromcndbusly Kith e;ro-wt,h rates of 20-40 % per yeax in &;nu% parts of the world. With this x t o n i ? ; b g growth, the existiug capitcity in some markcl ureas is dope to saturation. This stimulates thc development of LLLrdgcricraticn znobde system that will provide a widc r u y c of services, inclucling high quillity voice, x a r iable raOe dah: f l d motion vidm, high resohtiolk image, ttc. for eyeryonc. The potcntid demand is estimated to be one cotluection per adult. h t . e n n a s arc mobile iinita a x fundamental pQts a l the o.verdl system. The evoliition of mohilc systems rqiiirca pcsrtdde antsana elements thar, arc timid. low-profilc, lightweight and rdative inexpcn-? h e . Som. of t*he desired features Tor mobile ant
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