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FDTD based Analysis of Input Impedance of a Wearable Patch Antenna with Milli Bends

Affiliations

  • I. K. Gujral Punjab Technical University, Kapurthala – 144603, Punjab, India
  • NITTTR, Chandigarh – 160 019, India

Abstract


Wearable antennas are prone to bending and crumpling. This work presents the analysis of input impedance of a wearable patch antenna with milli bends using Finite Difference Time Domain (FDTD) method. FDTD method using stair case scheme is used to model milli bends at different places along the length of a wearable patch antenna and the effect of milli bends on input impedance of the wearable patch antenna is presented developing a FDTD code for it. It is shown that presence of milli bends in a wearable patch antenna significantly changed the input impedance of the antenna under consideration. It is observed that milli bends closer to the feeding strip line provided better input impedance matching. Results concluded that change in input impedance leads to change in resonant frequency and reflection coefficient of the antenna. General Terms: RF and microwave communication, Antenna design and analysis.

Keywords

Wearable antennas are prone to bending and crumpling. This work presents the analysis of input impedance of a wearable patch antenna with milli bends using Finite Difference Time Domain (FDTD) method. FDTD method using stair case scheme is used to model milli bends at different places along the length of a wearable patch antenna and the effect of milli bends on input impedance of the wearable patch antenna is presented developing a FDTD code for it. It is shown that presence of milli bends in a wearable patch antenna significantly changed the input impedance of the antenna under consideration. It is observed that milli bends closer to the feeding strip line provided better input impedance matching. Results concluded that change in input impedance leads to change in resonant frequency and reflection coefficient of the antenna. General Terms: RF

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References


  • Joshi JG, Pattnaik SS, Devi S. Metamaterial Embedded Wearable Rectangular Microstrip Patch Antenna.International Journal of Antenna and Propagation. 2012; Article ID 974315: 9.
  • Bai Q, Rigelsford J, Langley R. 2013: Crumpling of Microstrip Antenna Array. IEEE Transactions on Antennas and Propagations. 2013; 61(9):4567-76. Crossref
  • Yee KS. 1966. Numerical solution of initial boundary value problems involving Maxwell’s equations in isotropic media.IEEE Transactions on Antenna and Propagation. 1966; AP-14:302-07.
  • Teflove A. 1980. Application of Finite-Difference Time-Domain Method to Sinusoidal Steady-State Electromagnetic-Penetration Problems. IEEE Transactions on electromagnetic compatibility. 1980; EMC-22(3):191202. Crossref
  • Taflove A, Brodwin M. 1975: Numerical solution of steady state electromagnetic scattering problems using the timedependent Maxwell’s equations. IEEE Transactions on Microwave Theory and Techniques. 1975; 23:623-730.Crossref
  • Reineix A, Jecko B. 1989: Analysis of Microstrip Patch Antennas Using Finite Difference Time Domain Method.IEEE Transactions on Antenna and Propagation. 1989; 37(11):1361-69. Crossref
  • Sheen DM, Ali SM, Abouzahra MD, Kong JA. 1990: Application of the Three-Dimensional Finite-Difference Time-Domain Method to the Analysis of Planar Microstrip Circuits. IEEE Transactions on Microwave Theory and Techniques. 1990; 38(7):849-57. Crossref
  • Berenger JP. 1994: A perfectly matched layer for the absorption of electromagnetic waves. Journal of Computational Physics. 1994; 114:185-200. Crossref
  • Sullivan DM. 1996. A simplified PML for the use with the FDTD method. IEEE Microwave and Guided Wave Letters.1996; 6:97-99. Crossref
  • Salonen P, Rahmat-Samii Y. 2007: Textile antennas: Effects of antenna bending on input matching and impedance bandwidth. IEEE Aerospace and Electronic Systems Magazine. 2007; 22(3):10-14. Crossref
  • Luebbers RJ, Langdon HS. A Simple Feed Model that Reduces Time Steps Needed for FDTD Antenna and Microstrip Calculations. IEEE Transactions on Antenna and Propagation. 1996 July; 44(7):1000-1005. Crossref
  • Mandal D, Pattnaik SS. 2017: Effect of Milli Bends on Reflection Coefficient of a Wearable Antenna Using FDTD Method. Proceedings of the SCAWC International Conference on Soft Computing Applications in Wireless Communication. 2017 (Accepted).

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