Affiliation:
1. Information Systems Engineering Department, Kocaeli University, Kocaeli 41001, Turkey
2. Turkish Airlines Technic Inc., Turkish Airlines, Istanbul 34912, Turkey
Abstract
This paper presents a new microstrip implantable antenna (MIA) design based on the two-arm rectangular spiral (TARS) element for ISM band (Industrial, Scientific, and Medical 2.4–2.48 GHz) biotelemetric sensing applications. In the antenna design, the radiating element consists of a two-arm rectangular spiral placed on a ground-supported dielectric layer with a permittivity of ϵr = 10.2 and a metallic line surrounding this spiral. Considering the practical implementation, in the proposed TARS-MIA, a superstrate of the same material is used to prevent contact between the tissue and the metallic radiator element. The TARS-MIA has a compact size of 10 × 10 × 2.56 mm3 and is excited by a 50 Ω coaxial feed line. The impedance bandwidth of the TARS-MIA is from 2.39 to 2.51 GHz considering a 50 Ω system, and has a directional radiation pattern with directivity of 3.18 dBi. Numerical analysis of the proposed microstrip antenna design is carried out in an environment with dielectric properties of rat skin (Cole–Cole model ϵf (ω), ρ = 1050 kg/m3) via CST Microwave Studio. The proposed TARS-MIA is fabricated using Rogers 3210 laminate with dielectric permittivity of ϵr = 10.2. The in vitro input reflection coefficient measurements are realized in a rat skin-mimicking liquid reported in the literature. It is observed that the in vitro measurement and simulation results are compatible, except for some inconsistencies due to manufacturing and material tolerances. The novelty of this paper is that the proposed antenna has a unique two-armed square spiral geometry along with a compact size. Moreover, an important contribution of the paper is the consideration of the radiation performance of the proposed antenna design in a realistic homogeneous 3D rat model. Ultimately, the proposed TARS-MIA may be a good alternative for ISM-band biosensing operations with its miniature size and acceptable radiation performance compared to its counterparts.
Funder
Scientific and Technological Research Council of Turkey
University of Kocaeli
Subject
Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry
Reference44 articles.
1. Auciello, O. (2022). Ultrananocrystalline Diamond Coatings for Next-Generation High-Tech and Medical Devices, Cambridge University Press.
2. Hall, P.S., and Hao, Y. (2012). Antennas and Propagation for Body-Centric Wireless Communications, Artech House.
3. Elmqvist, R., and Senning, A. (1959, January 24–27). An implantable pacemaker for the heart. Proceedings of the Second International Conference on Medical Electronics, Paris, France.
4. Implanted antennas inside a human body: Simulations, designs, and characterizations;Kim;IEEE Trans. Microw. Theory Tech.,2004
5. Conformal ingestible capsule antenna: A novel chandelier meandered design;Izdebski;IEEE Trans. Antennas Propag.,2009
Cited by
8 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献