Slot antenna consisted of two conductive plates and thin wires

The solar power satellite (SPS) was proposed as a sustainable and reusable energy source for mankind in future. This paper discusses a design method of antenna elements whose conductive sidewalls in the conventional model are replaced by thin wires. Such a new configuration makes it easy to produce low profile antenna elements as well as array antennas. Relations between the wire intervals and input characteristics are clarified. It is shown from the study that the method is also available to design the new type of antenna element. This paper describes the geometries of a conventional and a new type of cavity-backed slot antenna, and shows the antenna parameters that realize the impedance matching by using the proposed method. The effectiveness of the design is clarified from computed results. Moreover, the mutual coupling of a nine-element array antenna is considered.