The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A 12-GHz (11.7 to 12.75 GHz) band satellite service with dual-circular polarization has been studied for transmission channels to deliver advanced broadcasting services such as 8K Super Hi-Vision in Japan. A right- and left-hand circularly polarized parabolic reflector antenna will make it possible to receive the services provided over the dual-circular polarization with a single reflector antenna. We manufactured and tested a dual-polarization offset reflector antenna that has a feed antenna composed of a 2 × 2 microstrip antenna array. Measured results showed that the antenna gain was 33.7 dBi and that the cross polarization discrimination was 25 dB. This demonstrates that our design is valid for a dual-circularly polarized antenna for 12-GHz band satellite broadcasting reception.