The aim of this study is to design of a small size implantable antenna involving Industrial, Scientific and Medical (ISM) (2.4 GHz-2.48 GHz) band. The goal of designing antenna is to obtain physiological information pertaining to person. Simulation measurements of antenna were obtained in body ambient by making the design of antenna with CST Studio Suite programme. Then, in vitro measurements were performed on antenna by making an artificial material, which shows electrical features of human skin tissue, to verify measurement results. Obtained measurement results and simulative results are in accordance.
This article presents a 2 to 18 GHz absorber‐loaded cavity‐backed (AL‐CB) two‐arm Archimedean spiral antenna fed by a 186 Ω Phelan balun for direction finding (DF) and radar warning receiver (RWR) applications. The balun's cross‐sectional area diameter at the antenna feeding region is less than the diameter of the active region ring at 18 GHz. This feature provides a lower axial‐ratio (AR) and wobble‐on‐wave (WoW) at higher operating frequencies and far theta angles and distinguishes the proposed AL‐CB spiral antenna from its counterparts and commercial off‐the‐shelf (COTS) products. The proposed antenna is 60 mm in diameter and 50 mm in height. The voltage standing wave ratio is typically less than 2 (max. 2.6), which is within 2 to 18 GHz frequency range, and the AR is less than 1 dB with a peak of 3.1 dB in off‐axis Ɵ < 60°. The WoW is less than 2 dB in off‐axis Ɵ < 60°. This study's simulation and measurements both demonstrate the ultrawideband (UWB) with 1:9 bandwidth, unidirectional, symmetric, and circularly polarized radiation characteristics of the proposed antenna for DF and RWR applications.
Wireless telemetry based secure communication has been extensively worked to improve the life quality of patients having heart problems, diabetic problems and so on. Information of appropriate biosensors could be transferred via implant antennas to which, there are a growing research interests. In the scope of this work, we have designed a wide band antenna for biotelemetry communication. Radiation diagram, reflection coefficient, gain and such critical parameters of designed antenna are investigated. CST Studio Suite 2008 software was employed during the design. The working frequency range, the properties of the implant medium and the position of the device were all considered via this software. On the other hand the antenna was encapsulated to a proper cavity so that the extra radiation would not be produced. Acquired results of this simulation work constitute a concrete infrastructure for clinical applications. 1. *LULú 7HNQRORMLQLQ JHOLúPHVLQH SDUDOHO RODUDN |QFHGHQ WHúKLV LON \DUGÕP YH WHGDYL DPDoOÕ VD÷OÕN X\JXODPDODUÕQGD KDVWD\D LOLúNLQ GH÷LúLN SDUDPHWUHOHULQ WDNLEL PRGHUQ \|QWHPOHULQ X\JXODQDELOPHVL LoLQ NULWLN |QHP WDúÕPDNWDGÕU 7ÕEEL WHGDYLGH veri iletiminLQ \DQÕ VÕUD WHOHNRPLQLNDV\RQ ekit cihazlar için |QHPOL ELU LúOHY RODUDN NDEXO HGLOLU YH EXQGDQ GROD\Õ GD LQVDQ YFXGXQD \HUOHúWLULOHFHN RODQ VHQV|U YH DQWHQOHU ]HULQH \DSÕODQ oDOÕúPDODUD RODQ LOJL JQ JHoWLNoH DUWPDNWDGÕU %X oDOÕúPDODU ÕúÕ÷ÕQGD PHGLNDO X\JXODPDODU DoÕVÕQGDQ DQWHQOHUL x ekit antenler x yutulabilir antenler RODUDN VÕQÕIODQGÕUDELOLUL] Ekit antenler mikrodalga görüntüleme, kalp ritim ER]XNOXNODUÕQÕQ J|]OHQPHVL NDQVHU WHúKLV YH WHGDYL \|QWHPOHULQGH YHUL LOHWLPLQLQ VD÷ODQPDVÕQGD NXOODQÕODELlir. 6RQ ]DPDQODUGD NDUúÕODúWÕ÷ÕPÕ] YH OLWHUDWUGH \HULQL DODQ \XWXODELOLU DQWHQOHU LVH JHQHOOLNOH KDVWDODUÕQ KRúODQPDGÕ÷Õ HQGRVNRSLNED÷ÕUVDN NDQVHUL PLGH VUHoOHUGH NXOODQÕODELOLU %XJQQ LPNDQODUÕ\OD ekit edilebilen sistemlerde RF ve biosensör teknoORMLVL ELUOHúWLULOHELOLU %LRVHQV|UOHU YFXWWD sürekli izlenmesi gereken fizyolojik parametrelerin J|]OHQPHVLQH RODQDN VD÷OD\DELOGL÷L JLEL HOGH HGLOHQ YHULOHULQ GÕúWDNL ELU DOÕFÕ\D J|QGHULOPHVL LoLQ GH ELU DQWHQH LKWL\Do GX\DU %X GD GÕú FLKD]OD VHQV|U DUDVÕQGD LOHWLúLPL VD÷OD\DFDN RODQ DQWHQH |QHPOL ELU URO ND]DQGÕUPDNWDGÕU. Bu tür oDOÕúPDODU DQWHQOHULQ WDVDUÕPÕ YFXW IL]\RORMLVL\OH biouygunluk göstermesi, güç bütçesi, ölçüm modellerinin JHOLúWLULOPHVL NXOODQÕODQ PDO]HPH YH DQWHQOHULQ ER\XWODUÕQGDQ kD\QDNODQDQ NÕVÕWODU YE QHGHQOHUGHQ |WU ROGXNoD ]RUGXU YH GLVLSOLQOHU DUDVÕ oDOÕúPDODUÕ JHUHNWLUPHNWHGLU ùLPGL\H NDGDU \DSÕODQ oDOÕúPDODUÕQ oR÷XQGD ekit DQWHQ WDVDUÕPÕ YH karakterizasyonu Medical Implant Communication Service 0,&6 EDQGÕQGD \DSÕOPÕúWÕU 0,&6 WHúKLV YH WHGDYL LúOHPOHULQL NROD\ODúWÕUPDN DPDFÕ\OD YHUL LOHWLPLQL VD÷OD\DQ oRN GúN JoO UDG\R KL]PHWL RODUDN WDQÕPODQDELOLU 0,&6 IUHNDQV EDQGÕ DQWHQ oÕNÕú JFQQ VÕQÕUODQGÕUÕOPDVÕ YH kompleks olan insan vücudunda dalga etkisini azaltmak için 402-0+] DUDOÕ÷ÕQGD VHoLOLU >@ 8OWUD JHQLú EDQGD VDKLS ekit antenler de biyomedikal X\JXODPDODUGD |QHPOL \HU WXWPDNWDGÕU 8OWUD JHQLú EDQ...
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