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.
The cross semi-elliptic monopole antenna and band-rejected cross semi-elliptic monopole antenna with finite ground plane have been implemented and investigated, respectively. Experimental results show that the obtained impedance bandwidths of the two designs of antenna fit the requirement of the UWB applications. The dipole-like radiation patterns over the operating bandwidth are also shown in this...
In this paper, a new CPW-fed monopole antenna is demonstrated and loaded with a cylindrical ceramic dielectric piece. With this ceramic dielectric piece loaded on the radiator of the monopole, a dual-band operation is generated in a single antenna. The proposed antenna can easily be excited by a 50-Omega CPW line and a tuning metal strips etched on the back side of the dielectric piece, good impedance...
The printed heart monopole antenna with bandwidth larger than 10 GHz has been proposed. In the case, the impedance bandwidth of about 137% has been obtained. The impedance bandwidth and peak gain obtained for the proposed antenna is better than the printed circular disc monopole antenna. And, the size of the proposed antenna is also smaller than the printed circular disc monopole antenna
Based on the reality and weaknesses of sugar production in China, a controlling system of sugar production cost was established by process analysis. Workshop expenses and per ton-sugar cost become two key components of sugar production. Cost accounting based on the connections of material flows among different producing sections. The system can be used for drawing strategies of remuneration and selling...
This paper examines the similarities and correspondence between the Entity-Relationship Diagram (ERD) technique and the constructs of two natural languages: English and Chinese. The correspondence between English and ERD was based on the author's previous work, and it was found that the ERD constructs have direct correspondence to the English sentence structure. The correspondence between Chinese...
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.