Radial Line Slot Array antenna development in Malaysia

The Radial Line Slot Array (RLSA) antennas become more popular due to its good characteristics such as low profile, low cost, aesthetically pleasing, ease of installation and simple structure. Many researchers have contributed to the development of RLSA antennas. This antenna started with the name of annular slot antenna designed by Kelly and Goebel in 1960's. In 1980's, the researchers from Japan have innovated this idea and proposed a new concept of radial slot planar antenna names Radial Line Slot Antenna. From here, many researches have been carried out involving researchers around the world. Researchers from Malaysia also involves in the development of RLSA antenna. The RLSA antenna research in Malaysia focuses on application that suitable to RLSA characteristic. Those applications are Direct Broadcast Satellite Reception, Point to point Microwave Link for Fixed Broadband Wireless Access and RFID. This paper will be focus on RLSA antenna development started with the history, research outcomes and the research focus in Malaysia.