Circurlaly polarized isoflux compact X band antenna for nano-satellites applications

This paper presents a circularly polarized isoflux antenna architecture. New design of compact antenna with parasitic elements was done. This antenna is composed of a circularly polarized patch associated with printed parasitic dipoles. The antenna dimension is about 83mm × 83mm × 15mm and only exceeds the upper face of the platform by 7.5mm. A new compact feeding circuit made of two (3dB, 90°) hybrid couplers and one 180° hybrid ring coupler is presented.