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.
Microwave filtering is an essential function required for signal generation, detection and processing. Narrowband, high isolation filters are needed for many applications such as antennas and power amplifiers. Since the introduction of electronic band-gap structure (EBS), many applications of EBS have been demonstrated where a spatially periodic perturbation of the waveguide gives rise to a stop-band...
In this paper, we employ elementary methods to investigate the reciprocal sums of the products of two Fibonacci numbers in several ways. First, we consider the sums of the reciprocals of the products of two Fibonacci numbers and establish five interesting families of identities. Then we extend such analysis to the alternating sums and obtain five analogous results.
As the sharable and reusable domain knowledge, domain ontology increasingly serves as a foundation for semantic Web. Personalized management of domain ontologies is to provide personalized views of domain ontologies to users during run time according to user preferences. It helps that users can focus on their interested parts, instead of the whole. It increases the efficiency of ontology-based application...
A doped fiber external cavity laser (DFECL) exhibits high power, narrow linewidth and stable wavelength which may be tuned. We demonstrate IEEE 802.11 signal transmission by direct modulating the ultra long DFECL at ~2.5GHz.
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.