The invention provides a
satellite-borne S-band measurement and control antenna, which comprises a
choking coil, a protection cover, four-arm spiral band and a phase shifter, and is characterized in that the
choking coil is integrally machined, and the overall dimensions and the number of turns of the
choking coil can be adaptively changed according to different electrical indicator requirements; the protection cover is molded by a
composite material and is effectively adhered to the choking coil so as to form a compact structure; the four-arm spiral band is of a pure
metal structure and divided into an inner cylinder and an outer cylinder; phase shifter does not contain a component inside and realizes phase shifting through a
metal strip line; and the four-arm spiral band and the phase shifter are designed into a modular
assembly and assembled according to different antenna turning direction requirements. Therefore, the antenna provided by the invention has the characteristics of
miniaturization, hemispherical beam, wide-angle
circular polarization,
broadband and the like, the phase shifter of the antenna does not contain components, and the phase shifter and the four-arm spiral band realize
radio frequency connection through structural plugging, so that the
satellite-borne S-band measurement and control antenna realizes compact structure,
miniaturization, light weight and high reliability.