International Symposium on Telecommunication (IST)

Home / 11th International Symposium on Telecommunication (IST'2024)

Compact Wideband Circularly Polarized Printed Monopole Antenna

Authors :

Mubarak Sani Ellis¹ Javad Nourinia² Changiz Ghobadi³ Keyhan Hosseini⁴ Farzad Alizadeh⁵ Bahman Mohammadi⁶

1- Department of Telecommunication Engineering, Kwame Nkrumah University of Science and Technology, Kumasi-Ghana 2- دانشگاه ارومیه 3- دانشگاه ارومیه 4- دانشگاه کردستان 5- دانشگاه ارومیه 6- دانشگاه ارومیه

Keywords :

Antenna،circular polarization،characteristic mode analysis،printed monopole،slotted ground plane

Abstract :

A compact wideband circularly polarized printed monopole antenna is designed here. This wide circular polarization (CP) performance is achieved by using a rectangular microstrip monopole and a defected ground plane. The defection in the ground plane involves creating short vertical and horizontal open slots on the ground plane and adding a small vertical extension. The achieved results depict an |S11| ≤ -10 dB bandwidth of 3.9-9 GHz (79%) and an AR ≤ 3 dB bandwidth of 5.1-8.9 GHz (55%). The proposed antenna is compact with an area of 25 mm × 25 mm. This design is easy to fabricate and optimize and does not require complex parasitic elements or complex monopole structures to generate CP. The antenna is investigated using characteristic mode analysis (CMA) to figure out the orthogonal modes and working principle of CP radiation. Details of the design procedure, gain and radiation pattern characteristics, and comparison to previous works will be presented at the conference.