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 presents the ongoing work of designing, simulating and measuring a 3D printed, broadband 6–18GHz double ridged waveguide (WRD) Rotman lens. In order to achieve a wide bandwidth with +/−30 degrees scan range, five different input ports were carefully designed. Simulations indicate that we should be able to achieve low loss, reasonable gain and reflection coefficient < −10dB. In order...
This is an overview of challenges we have encountered when designing, manufacturing and measuring 3D printed antennas, waveguides, and lenses for microwave applications. We also suggest solutions to some of the problems.
In this work we design, simulate, manufacture and measure blocks made of variable density plastic. The density is controlled through varying the size of small cubes at the intersections of a fine grid. This structure is inspired by [1]. Simulations using HFSS show that there is a consistent relation between plastic density and relative permittivity (εr), and this is confirmed by measurements of 24...
This paper discusses the transmit properties of 3D printed horn antennas with different metallization processes: vacuum metallization, electroplating, and conductive paint. Electroplating was done with three metal thicknesses: 3pm, (mm, and 50μm. Microwave signals of up to 100W at frequencies of 7.5GHz, 12.5GHz, and 18GHz were applied to the antennas. Measurements show that the metallization process...
3D printing opens new possibilities for system design, prototyping and manufacturing. Development time can be shortened, prototyping is cheaper and novel designs can be implemented with greater ease than earlier. In this paper we present a UAV wing section with an embedded wideband waveguide and antenna structure covering 7.5 to 18GHz. The design was computer simulated, produced with a 3D printer...
The purpose of this paper is to provide a comprehensive evaluation of how plastic materials, different metallization process, and thickness of the metal can influence the performance of 3D printed broadband antenna structures. A set of antennas were manufactured using Fused Deposition Modeling technology and Polyjet technology. Three different plastic materials ABS, PLA and Vero were employed in the...
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.