Low‐profile dual‐band antenna with on‐demand beam switching capabilities. Issue 1 (19th September 2019)

• Record Type: Journal Article
• Authors: Iqbal, Amjad; Bouazizi, Amal; Smida, Amor; Basir, Abdul; Naeem, Umair
• Is Part Of: IET microwaves, antennas & propagation. Volume 14:Issue 1(2020)
• Page Start: 15
• Page End: 20
• Publication Date: 2019-09-19
• Subjects: antenna radiation patterns -- ultra wideband radar -- impedance matching -- multifrequency antennas -- omnidirectional antennas -- monopole antennas -- satellite antennas -- microwave antennas; switches -- radiation pattern -- radiated power -- switching states -- low‐profile dual‐band antenna -- on‐demand beam switching capabilities -- dual‐band pattern‐reconfigurable monopole antenna -- C‐band satellite communication systems -- ground plane -- impedance matching -- frequency 8.5 GHz -- frequency 7 GHz -- frequency 3 GHz; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2019.0401
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : In this study, a dual‐band pattern‐reconfigurable monopole antenna is designed and experimentally validated for C ‐band satellite communication systems and sensing UWB‐radar applications. The proposed antenna has three resonances at 3, 7 and, 8.5 GHz. To incorporate the reconfigurability, two switches are applied in the ground plane to reshape the radiation pattern and focus the radiated power in the desired direction. Thus, the desired beam from the antenna can be obtained by adjusting the states of the switches. The proposed antenna has good impedance matching ( S 11 < − 10 dB for both operating bands), reasonable gain (>4.1 dBi), and high efficiency (>83%) for all switching states. A good agreement is observed between the simulated and measured results.