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 letter, a dual-band dipole antenna, both in the strip and the wired structures, for possible 4G long-term evolution (LTE) and wireless local area network (WLAN) applications is presented. The proposed antenna bandwidth covers the low and the high bands of WLAN (2.4 GHz, 5 GHz) and TD-LTE (1880–2655 MHz) in dual-band frequency, the impedance bandwidth in the low and the high bands are 63% (1...
In this paper, an accurate closed form formula is derived to calculate the depth of a dielectric filled rectangular crack. The derived formula is in terms of the crack's width, echo width measurements, the filling permittivity and the incident angle. The first term of the proposed formula is related to the first null echo width while the second one is a correction term. The calculated depth of the...
The Kobayashi Potential (KP) is an analytical technique used for solving mixed boundary geometrical problems. In this paper scattering by a 2D dielectric filled rectangular crack on a ground plane, coated by a dielectric layer for TM case is studied using KP method. The fields in three distinctive regions of the geometry are expressed in terms of Bessel eigenfunctions. The problem is reduced to a...
Electromagnetic plane-wave scattering by a 2D loaded rectangular crack on a ground plane coated by a dielectric layer illuminated by a TE plane wave is studied theoretically using Kobayashi Potential method. The geometry is divided into three regions and the fields in each region are expressed in terms of Bessel eigenfunctions. The solution in then found by solving a system of equations which is formed...
Analysis of MESFET traveling wave multipliers (TWM) has been presented. Moreover, a systematic approach to its design has been presented. The analysis has revealed that the transmission-line attenuation and gate phase factor are the critical factors in the design of the TWM. In order to confirm these approaches two doublers were designed from 7 to 17 GHz, and the results are presented.
A quantitative analysis, leading to the design and optimization of an active microwave frequency tripler is presented in this paper. Optimum matching networks are developed which produced a stable design with conversion gain up to 2.5 dB for specific biasing condition. At the last the coupled filter in desired third harmonic and its characterizations are presented.
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.