Pattern diversity helps provide reliable communication in harsh environments as well provide higher data rates. This research focuses using achieving both broadside and conical beams using a combination of single UWB antennas. Good isolation is also realized.
Generally, unidirectional antennas have focused beams but are complex. Omnidirectional antennas do not have focused beams but are easy to design and fabricate. This research focuses on making monopole antennas unidirectional without using cavity backed structures, which is the most common way. Here, we employ a technique we call quasi-radiator to achieve this goal. The result is broadband, and the beam direction remain stable at different frequencies.
Most on-body antennas employ omnidirectional antennas mainly due to its low profile and simple nature. However, a lot of the back radiation is absorbed by the body. The use of unidirectional antennas is therefore greatly recommended but many have complex structures or require cavity back structures and stacked dielectrics which makes the antenna bulky. This research focusses on using monopole antennas specially designed to use radiate unidirectional radiation pattern with cavity backed structures, for on-body applications.
Circular polarization is important due to the rugged nature of the electromagnetic environment, which leads to problems like Faraday Rotation. This research focuses on designing printed CP antennas for C-band and other applications with wideband Axial Ratios. These include both monopole and printed slot designs
The antenna group was officially established by Dr. Sani Mubarak Ellis in 2020. The group is part of the Department of Telecommunication Engineering, KNUST.