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.
In this paper, we propose a novel ladder antenna without the stub for the CP radiation. The antenna is analyzed using the method of moments and dual CP wave operation is studied. Based on the radiation characteristics, an array antenna composed of ladder elements is further investigated.
A loop antenna using an L-shaped wire for the feed has been numerically investigated. Calculations reveal that the antenna radiates a CP beam with an axial ratio of 0.1 dB, when the L-shaped wire is shifted by d = 0.1 Oλ0. To know the radiation mechanism, the current distribution is presented and the total radiation from the antenna is decomposed into radiation from the L-shaped wire and radiation...
The Japan Aerospace Exploration Agency has been developing the Mercury Magnetospheric Orbiter (MMO), which is Japanese part of the BepiColombo mission. During its mission around Mercury, the spacecraft will be exposed to high solar irradiance of up to 11 suns, with an estimated maximum solar panel temperature of 230°C. In such an environment, solar cells are required to operate under high intensity...
A loop antenna having a gap has been investigated in the presence of a ground plane. The antenna configuration is optimized for the CP radiation, using the method of moments. It is found that, as the loop height above the ground plane is reduced, the optimized gap width approaches zero. Further antenna height reduction is found to be possible for an antenna whose wire radius is increased. On the basis...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.