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 investigated EM wave absorber for a ceiling of a tollgate in ETC system. The EM wave absorber samples were made of CPE and Flake Sendust powders, which can be manufactured with mechanical forging of spherical Sendust powders using attrition mill to get high value of magnetic permeability and dielectric permittivity in high frequency range. The absorption ability of the samples were...
Recently, wireless LAN is often applied at home or in office for several convenience merits. Frequency band of wireless LAN is 2.4 GHz and 5.2 GHz which are specified IEEE 802.11a and IEEE 802.11b. Wireless LAN environment in office has reflected waves that are caused by walls, ceilings, floors, and desks. It creates multi-path problems. Which reduce communication speed and lose data. To solve these...
In this paper, we investigated how to improve the EM wave absorption properties with Al(OH)3. Where we compared results for the case of the absorption properties of samples containing 0 wt%, 1 wt%, 3 wt%, 5 wt%, and 7 wt% of Al(OH)3. The absorption property curve just has the tendency to improve the characteristics at 5 wt% of Al(OH)3 at Sendust, and at 3 wt% of Al(OH)3 at Carbon. As a result, the...
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.