New Compact Wearable Metamaterials Circular Patch Antennas for IoT, Medical and 5G Applications

摘要

The?development?of?compact?passive?and?active?wearable?circular?patch?metamaterialsantennas?for?communication,?Internet?of?Things?(IoT)?and?biomedical?systems?is?presented?in?thispaper.?Development?of?compact?efficient?low‐cost?wearable?antennas?are?one?of?the?most?significantchallenges?in?development?of?wearable?communication,?IoT?and?medical?systems.?Moreover,?theadvantage?of?an?integrated?compact?low‐cost?feed?network?is?attained?by?integrating?the?antennafeed?network?with?the?antennas?on?the?same?printed?board.?The?efficiency?of?communicationsystems?may?be?increased?by?using?efficient?passive?and?active?antennas.?The?system?dynamic?rangemay?be?improved?by?connecting?amplifiers?to?the?printed?antenna?feed?line.?Design,?designconsiderations,?computed?and?measured?results?of?wearable?circular?patch?meta‐materials?antennaswith?high?efficiency?for?5G,?IoT?and?biomedical?applications?are?presented?in?this?paper.?The?circularpatch?antennas?electrical?parameters?on?the?human?body?were?analyzed?by?using?commercial?full‐wave?software.?The?circular?patch?metamaterial?wearable?antennas?are?compact?and?flexible.?Thedirectivity?and?gain?of?the?antennas?with?Circular?Split‐Ring?Resonators?(CSRR)?is?higher?by?2.5dBto?3dB?than?the?antennas?without?CSRR.?The?resonant?frequency?of?the?antennas?without?CSRR?ishigher?by?6%?to?9%?than?the?antennas?with?CSRR.?The?computed?and?measured?bandwidth?of?thestacked?circular?patch?wearable?antenna?with?CSRR?for?IoT?and?medical?applications?is?around?12%,for?S11?lover?than??6dB.?The?gain?of?the?circular?patch?wearable?antenna?with?CSRR?is?around?8dBi.