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.
This paper reports the design of a novel flexible dual-band frequency dependent complex load impedance transformer. The proposed dual-band impedance transformer (DBIT) is capable of matching any arbitrary complex impedance seen by the active device at two arbitrary frequencies to a real source impedance of 50 Ω simultaneously. The closed form equations are derived analytically to achieve realizable...
This paper presents the design of a miniaturized 3dB branch line coupler (BLC) for wideband applications. Multiple symmetric PI sections are used in this design to replace the quarter-wavelength transmission lines of the conventional coupler. The design formulas are derived and verified with the simulated and measured results. The circuit area of the proposed BLC is only 20.3% of the conventional...
In an antenna array the mutual coupling between the array elements affects the resultant far filed radiation pattern. This paper presents an effective solution to the problem of mutual coupling in antenna arrays by placing sub wavelength resonators like complementary split ring resonator (CSRR) and open slot split ring resonator (OSSRR) in the ground plane. A two element patch antenna array operating...
This paper describes a size miniaturized rat-race coupler using defected microstrip structure called meander spurline and folding technique. By etching a meander spurline on microstrip line, slow wave effect is introduced and size reduction is achieved. The length of the quarter wave transmission line is reduced by 25.76%. The proposed rat race coupler is compact and is 60.17 % smaller than the conventional...
Sub wavelength resonators are widely used for size miniaturization and performance enhancement of microwave devices. In this paper, a sub wavelength resonator called an open complementary split ring resonator (OCSRR) is used to design a bandstop filter. Two open stubs of length λg/4 and a single OCSRR are employed for the design of bandstop filter. The open stubs are folded in opposite direction to...
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.