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1 results

  • Improved feeds for log-periodic microstrip antenna arrays

  • Arjuna Muduli, Rabindra K. Mishra
  • Journal:
    International Journal of Microwave and Wireless Technologies / Volume 15 / Issue 3 / April 2023
    Published online by Cambridge University Press:
    23 March 2022, pp. 477-485

  • This note proposes a log-periodic microstrip antenna (LPMA), particularly after developing possible feed structures. The process develops an appropriate feed such that the LPMA can exhibit almost end-fire characteristics such as a log-periodic dipole antenna. The study simulated two LPMAs, one with five elements and the other with seven elements, followed by measurements on a five-element prototype. The five-element prototype LPMA with such a feed exhibits a bandwidth of 2.2–3 GHz. Over this band, radiation patterns remain consistent with a gain of 9.8 dBi. Simulated results follow the measured ones closely.