کنفرانس مهندسی برق ایران

صفحه اصلی / سی و چهارمین کنفرانس بین المللی مهندسی برق

A Simple and New Multi-mode Pattern Reconfigurable Antenna with a Cavity-backed Structure

نویسندگان :

Mahmood Rafaei-Booket¹ Mubarak Sani Ellis² George Appiah Prah II³ Matin Azizpanah⁴

1- University of Zanjan 2- Department of Telecommunication Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana. 3- Department of Telecommunication Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana. 4- Faculty of Electrical Engineering K. N. Toosi University of Technology Tehran, Iran

کلمات کلیدی :

pattern-reconfigurable antenna،directional antenna،cavity-backed structure،pin-diode

چکیده :

A simple planar antenna with five reconfigurable radiation patterns is proposed. The proposed antenna incorporates two pin diodes connected to the patch and a partial ground plane. By changing the states of the pin diodes embedded in the stubs, the antenna can switch between two different directional patterns and three more directional patterns with the inclusion of a cavity-backed structure, which acts as a reflecting surface. The antenna exhibits a compact size of 0.288λ0 × 0.288λ0 × 0.0128λ0 (where λ0 is free space wavelength at 2.4GHz). The proposed design has an S11 < -10dB of 55% (1.54 – 2.86 GHz) for all 5 directional radiation modes. The antenna is low profile, simple structure, easy to fabricate, and has multiple tilt angles while maintaining similar impedance bandwidths in all modes.