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 is concerned with an approximation for diffraction function composed of a complex type of Fresnel function. The diffraction function is often used when we analyze the electromagnetic diffraction problems by using the discrete ray tracing method (DRTM). In this paper we introduce an approximate expression for the diffraction function in the form of simplified polynomial series resulting...
This paper presents design of the novel alternating-phase fed array with linearly slot arrangement for grating lobe suppression. Slots at the center of the broad wall are excited by the inductive wall and the reflection is suppressed by the capacitive wall at each slot. Then, the prototype array with 16 slots on each waveguide is tested at 25 GHz. Good radiation pattern with broadside radiation of...
This paper focuses on two aspects, macroscopic and microscopic, of pure and surfactant-added tetramethylammonium hydroxide (TMAH) wet etching. The macroscopic aspects deal with the technological/engineering applications of pure and surfactant-added TMAH for the fabrication of microelectromechanical systems (MEMS). The microscopic view is focused on the in situ observation of the silicon surface during...
This paper presents design of the slot array for grating lobe suppression. The slots arrayed at the center of the radiating waveguide are excited by the inductive wall, while the reflection from each slot is canceled out by the capacitive wall. Slot coupling and the condition of the reflection canceling are analyzed by using Ansoft HFSS. Then, the 16-slot array is designed at 25.33 GHz. Uniform aperture...
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.