InformaApp - Publikationen

Fahrzeugbeleuchtungsanordnung, Leuchtmitteltreiberschaltung und Verfahren zur Bereitstellung von Informationen zur Bestimmung eines Beleuchtungszustandes

2019

Nachhaltig Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen TC Teisnach Sensorik

Patent

Günther Ruhl, M. König

Process for the formation of a graphene membrane component, graphene membrane component, microphone and Hall-effect sensor

2019

Nachhaltig Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen IPH Teisnach

Zeitschriftenartikel

Franz Xaver Röhrl, Johannes Jakob, Werner Bogner, R. Weigel, Stefan Zorn

Bare die connections via aerosol jet technology for millimeter wave applications

International Journal of Microwave and Wireless Technologies, vol. 11, no. Special Issue 5-6 (EuMW 2018 Special Issue (Part I)) [June], pp. 441-446

2019

DOI: 10.1017/S1759078719000114

Abstract anzeigen

This paper presents a comparison of chip connections using aerosol jet (AJ) and bond technology on low-cost printed circuit board (PCB) substrates. First, the behavior of the used gap filler material and the used silver ink for AJ technology on PCBs are characterized. In addition to comparing the radio frequency (RF) performance (DC to 67 GHz) of the two technologies, the mechanical stability is also compared. While the AJ technology transitions score above all for their RF performance and the lower requirements (surface finish, pad size, and adhesion) on the PCB, the bonding technology has clear advantages, especially with a different coefficient of thermal expansion values of the substrates to be connected. Finally, the measurement results of a complete package are shown, whereby the chip connection is realized once by means of AJ and once by bonding wires.

Nachhaltig Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen IPH Teisnach

Vortrag

Johannes Jakob, R. Sammer, Franz Xaver Röhrl, Werner Bogner, Stefan Zorn

WR12 to planar transmission line transition on organic substrate

Invited Talk

49th European Microwave Conference (EuMC), Paris, Frankreich

2019

Nachhaltig Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen IPH Teisnach

Vortrag

Felix Sepaintner, Andreas Scharl, Franz Xaver Röhrl, Werner Bogner, Stefan Zorn

Simulation and Manufacturing of Low Loss PCB Structures with Additional Electromagnetic Field in Air

Invited Talk

IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes (IMWS-AMP), Bochum

2019

Nachhaltig Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen IPH Teisnach

Beitrag (Sammelband oder Tagungsband)

Felix Sepaintner, Andreas Scharl, Franz Xaver Röhrl, Werner Bogner, Stefan Zorn

Simulation and Manufacturing of Low Loss PCB Structures with Additional Electromagnetic Field in Air

Proceedings of the IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes (IMWS-AMP) [July 16-18, 2019; Bochum]

2019

DOI: 10.1109/IMWS-AMP.2019.8880079

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This paper presents a new method to produce different kinds of RF waveguides with reduced attenuation on low cost PCB substrates. First, microstrip (MS) and grounded coplanar waveguides (GCPW) are characterized by considering rough conductors in CST Microwave Studio. Next, laminate is partially removed, to increase the electromagnetic field ratio in air. Accordingly, the dielectric losses are reduced and the electrical length is decreased. These conductors are produced by using a CO 2 laserdrilling machine to remove the undesired substrate. The RF performance (DC to 100 GHz) of these waveguides is compared to transmission lines manufactured in conventional PCB technology. Finally, different kinds of simulated and produced microstrip filters are shown and fabrication tolerances are compared to those produced in standard technology.

Digital Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen TAZ Spiegelau

Patent

T. Spöttl, J. Pohl, F. Püschner, Günther Ruhl

Elektronisches Identifikationsdokument und Verfahren zur Herstellung eines elektronischen Identifikationsdokuments

2019

Nachhaltig Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen TAZ Spiegelau

Vortrag

Alois Kasberger, Benedikt Winter, T. Ullrich, Stefan Menzel, Raimund Förg

Precision Glass Molding of Light Emitting Optics, Containing Phosphors Directly Embossed into Glass

6th Conference on Manufacturing, Tolerancing and Testing of Optical Systems, München

2019

Nachhaltig Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen TAZ Spiegelau

Beitrag (Sammelband oder Tagungsband)

Alois Kasberger, Benedikt Winter, T. Ullrich, Günther Ruhl, Raimund Förg

Entwicklung einer wasserdichten LED Flächenleuchte mit direkt im Glas eingebrachtem Konvertermaterial

Poster

DGaO Proceedings zur 120. Jahrestagung (11.-15.06.2019; Darmstadt)

2019

Nachhaltig Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen TAZ Spiegelau

Patent

M. König, Günther Ruhl

Schichtstruktur und Verfahren zur Herstellung einer Schichtstruktur

2019

Nachhaltig Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen IPH Teisnach

Beitrag (Sammelband oder Tagungsband)

M. Pohl, U. Bielke, R. Boerret, Rolf Rascher, Olga Kukso

MSF-error prevention strategies for the grinding process

Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [April 9th-10th 2019, Teisnach]), Bellingham, WA, USA

2019

DOI: 10.1117/12.2526581

Abstract anzeigen

This research is focused on the link between manufacturing parameters and the resulting mid-spatial frequency error in the manufacturing process of precision optics. This third publication focuses on strategies of avoidance and generation mechanisms of the mid-spatial frequency errors from the grinding process. The Goal is to understand the generation mechanisms of the mid-spatial frequency errors and avoid their appearance in the manufacturing process.

Nachhaltig Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen IPH Teisnach

Beitrag (Sammelband oder Tagungsband)

Gerald Fütterer, Michael Wagner, Lucas Bauer, Simon Wittl

Alignment and thermal drift aspects of a four-tilted-mirror student project telescope

Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [April 9th-10th 2019, Teisnach]), Bellingham, WA, USA

2019

DOI: 10.1117/12.2530076

Abstract anzeigen

The Deggendorf Institute of Technology (DIT) and its Faculty of Applied Natural Sciences and Industrial engineering transfer a broad spectrum of knowledge to the students. The clarification of the interrelations that exist between seemingly isolated fields of knowledge is a permanent process. In order to put this into practice, a telescope construction project was started. The base of the in-house student project is the Technology Campus in Teisnach, which bundles capacities for process development, production and measurement of high-precision optics, including telescope optics. A first optical design, which is based on a subset of the parameter space published in 1989 by M. Brunn1, 2 (later built by D. Stevick as f/12-system3 ), made use of a primary mirror M1 with a diameter of 400 mm. An f/8-system provide a Strehl ratio SR ≥ 0.8 over an entire field of view of 0.7° deg. Even if this seems to be sufficient, manufacturing tolerances, adjustment tolerances, thermal drift and positional changes considerably reduce the Strehl ratio. In order to obtain reliable values of acceptable tolerances, statistical Monte Carlo analyses had been carried out. As consequences, the tube design was changed and the design of new mirror mounts started. This was done to achieve the required stiffness. The new tube designs, one based on carbon-fiber-reinforced polymer (CFRP) and one based on FeNi36, had been tested by using FEM analysis. In addition, the practicability of deep learning based aberration detection was tested. Zernike polynomials obtained by analyzing the star images with a Convolutional Neuronal Network (CNN). The current state of the development is described.

Nachhaltig Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen IPH Teisnach

Beitrag (Sammelband oder Tagungsband)

Gerald Fütterer

Wave front sensing for metrology by using optical filter

Proceedings of SPIE 11171 (Sixth European Seminar on Precision Optics Manufacturing, 1117101 [April 9th-10th 2019, Teisnach]), Bellingham, WA, USA

2019

DOI: 10.1117/12.2530013

Abstract anzeigen

An interferometric problem is the limited fringe density, which is due to the limited allowed slope difference of superimposed wave fronts. Thus, the angular dynamic range of measurable surfaces and objects under test is limited. In other words, all shapes that deviate from a plane surface or a sphere represent a measuring problem in interferometers, or require an individually adapted null optics, which might cost e.g. 10 k∈ or more. In addition, ground surfaces cannot be measured in standard interferometers, except by using Speckle interferometry, which is limited in resolution. Freeform optics are very problematic. Even when polished, only tactile or confocal coordinate measurement might work. Several interferometers address the problem of the angular deviation to a sphere. For instance, lateral stitching on a curved surface, which is equivalent to the best-fit sphere, or longitudinal stitching is used. To use a tilted wave interferometer for asphere metrology is another option, which provides versatile measurement configurations. The approach discussed here is to use optical filters. The development of this technique is part of a project most recently started at the Technology Campus in Teisnach. The surface under test (SUT) is imaged onto an optical filter, which has a calibrated angular selectivity. Thus, the angles of the local wave front normal vectors are transferred into an intensity distribution. A set of angular measurements enables reduced uncertainty of the wave front measurement. Aspects as e.g. the working principle, boundary conditions and the identification of practical filters are discussed in the paper.

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