Workshop on AP Technologies

This workshop explores advanced antenna technologies, focusing on overcoming the limitations of traditional phased arrays. We delve into Fabry-Perot cavity antennas, which achieve high gain and electrical beam scanning with a single feed, reducing signal loss and complexity. The workshop covers key components like artificial magnetic conductors (AMC) and partially reflective surfaces (PRS), essential for achieving these functionalities. These structures, when combined with FPC antenna technology, offer a simplified approach to electrical beam scanning. We will also discuss innovative applications, including polarization-converting antennas, electrically beam-steerable antennas, and the emerging field of reconfigurable intelligent surfaces (RIS). Furthermore, we will introduce a novel cube-type phased array antenna that enables polarization conversion. This antenna features a structure enclosed by walls with adjustable reflection phases on all sides, augmented by a PRS superstrate to form an FPC antenna. Unlike conventional FPCs, this design offers significantly higher antenna efficiency due to its fully enclosed structure. However, traditional FPC design theories are insufficient for analyzing this enclosed structure, necessitating a new resonator analysis method, which will be presented. The proposed cube-type antenna offers easy assembly and expansion, with individual cubes replaceable for simplified maintenance. Additionally, we will examine miniaturized reflectarray antennas and frequency-selective surfaces, highlighting their role in modern antenna design. This workshop will demonstrate how AMC, PRS, and FSS technologies can be effectively integrated into FPC antennas and cube-structured phased arrays to achieve low-cost, simplified electrical beam scanning and polarization conversion.