Prof. Dr.-Ing. Stefan Zorn

mmW Applications Test and Measurement PCB Technology

Professor


consulting time

by arrangement


Beitrag (Sammelband oder Tagungsband)
  • Andreas Scharl
  • Felix Sepaintner
  • Franz Xaver Röhrl
  • Werner Bogner
  • Stefan Zorn
Simulation and Measurement of PCB Crossover Structures from DC up to 70 GHz. [Invited Talk]
  • 2020

In this paper, 4 different crossover structures in a 6-layered printed circuit board (PCB) for high operation frequencies are presented. The design for all structures is based on grounded coplanar waveguide (GCPW). Two fully planar structures, a quasi-coaxial transition and coaxial transition are realized and have a measured bandwidth from DC to 50 GHz and DC to 60 GHz, respectively. Moreover, two structures are designed in submount technology. Especially the connection between baseboard and package (solder junction) plays an important role to guarantee best signal integrity. Therefore, the quality of the solder junction is analysed in detail with TDR (time domain reflectometry) measurement as well as with X-ray images. The submount transitions show good radio frequency (RF) characteristics from DC to 70 GHz.
  • TC Teisnach Optik
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • DIGITAL
Zeitschriftenartikel
  • Felix Sepaintner
  • Andreas Scharl
  • Franz Xaver Röhrl
  • Werner Bogner
  • Stefan Zorn
Characterization and Production of PCB Structures With Increased Ratio of Electromagnetic Field in Air, vol. 68, pg. 2134-2143.

In: IEEE Transactions on Microwave Theory and Techniques

  • 2020

DOI: 10.1109/TMTT.2020.2983934

Producing passive printed circuit board (PCB) structures in the millimeter-wave range includes some fundamental challenges, such as low manufacturing costs and high fabrication accuracy. These aspects, in general, have to be combined with low signal attenuation, precise simulation models, and a reliable producibility. This article shows a new method to manufacture different kinds of passive RF waveguides with reduced attenuation and decreased electrical length on low-cost PCB substrates. First, the complex material parameters of the used substrate and the used copper foil are extracted from 10 to 100 GHz to have accurate simulation models in CST Microwave Studio. This is necessary because the parameters provided by the manufacturer are often no longer generally valid in this frequency range. In addition, PCB materials have a significantly higher surface roughness compared with conventional materials for millimeter-wave applications. Therefore, the correct determination and the correct modeling of surface roughness is particularly important. Next, laminate is removed partially on the outer layer of the PCB to increase the electromagnetic field ratio in air. The undesired substrate is removed by a CO2 laser drilling machine by setting narrow drills sequentially. The RF performance of these waveguides is compared with those manufactured in conventional PCB technology according to attenuation and producibility.
  • TC Teisnach Optik
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • DIGITAL
Beitrag (Sammelband oder Tagungsband)
  • Felix Sepaintner
  • Andreas Scharl
  • Franz Xaver Röhrl
  • Werner Bogner
  • Stefan Zorn
Extracting Complex PCB Substrate Permittivity from a Transmission Line using the Finite Difference Integral Method from 10 GHz - 100 GHz. [Invited Talk]
  • 2020

DOI: 10.1109/IMWS-AMP49156.2020.9199738

This paper presents a new numerical method to deduce the complex permittivity εr of PCB (printed circuit board) substrates. First, the attenuation and phase of an on board transmission line are measured with a vector network analyzer (VNA). The transmission line is then simulated with the finite difference integral method (FDI) with the substrate substituted by air. The measured and simulated phases are used, to calculate the effective permittivity and the real part of the complex permittivity εr ' . With known εr ' , the electromagnetic field distribution can be calculated, which is necessary to deduce the imaginary part of the permittivity. The shown algorithms can be used for frequencies up to 100 GHz and without any iterative processes.
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • TC Teisnach Optik
  • DIGITAL
Vortrag
  • Andreas Scharl
  • Felix Sepaintner
  • Franz Xaver Röhrl
  • Werner Bogner
  • Stefan Zorn
Design and Comparison of Filter Structures in the Millimetre Wave Frequency Range on Outer- and Inner-Layers of Organic Circuits Boards. Invited Talk

In: 2020 50th European Microwave Conference (EuMC)

  • 2020
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • TC Teisnach Optik
  • NACHHALTIG
  • DIGITAL
Beitrag (Sammelband oder Tagungsband)
  • Andreas Scharl
  • Felix Sepaintner
  • Franz Xaver Röhrl
  • Werner Bogner
  • Stefan Zorn
Design and Comparison of Filter Structures in the Millimetre Wave Frequency Range on Outer- and Inner-Layers of Organic Circuits Boards. [Invited Talk]
  • 2020
  • TC Teisnach Optik
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • DIGITAL
Vortrag
  • Felix Sepaintner
  • Andreas Scharl
  • Florian Keck
  • Kevin Kunze
  • Franz Xaver Röhrl
  • Werner Bogner
  • Stefan Zorn
Cost-Effective Implementation of Air-Filled Waveguides on Printed Circuit Boards. Invited Talk

In: IEEE Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS)

  • 2020
  • TC Teisnach Optik
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • DIGITAL
  • NACHHALTIG
Beitrag (Sammelband oder Tagungsband)
  • Felix Sepaintner
  • Andreas Scharl
  • Florian Keck
  • Kevin Kunze
  • Franz Xaver Röhrl
  • Werner Bogner
  • Stefan Zorn
Cost-Effective Implementation of Air-Filled Waveguides on Printed Circuit Boards. [Invited Talk]
  • 2020

DOI: 10.1109/EPEPS48591.2020.9231382

This paper presents a new cost-effective method to produce air-filled waveguides out of a printed circuit board (PCB) with a milling machine and how to implement them with standard PCB technology. For this purpose, low cost substrates like FR-4 are used. For the baseboard to waveguide transition in the E-Band (60-90GHz) a WR12 waveguide connector [1] was used. The WR12 waveguide was manufactured and analyzed on mechanical deviations. The RF performance in the E-Band was measured and compared to common PCB waveguides like microstrip lines (MS) and grounded coplanar waveguides (GCPW).
  • TC Teisnach Optik
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • DIGITAL
Vortrag
  • Felix Sepaintner
  • Andreas Scharl
  • Franz Xaver Röhrl
  • Werner Bogner
  • Stefan Zorn
Extracting Complex PCB Substrate Permittivity from a Transmission Line using the Finite Difference Integral Method from 10 GHz - 100 GHz. Invited Talk

In: 2020 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)

  • 2020
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • TC Teisnach Optik
  • DIGITAL
  • NACHHALTIG
Vortrag
  • Andreas Scharl
  • Felix Sepaintner
  • Franz Xaver Röhrl
  • Werner Bogner
  • Stefan Zorn
Simulation and Measurement of PCB Crossover Structures from DC up to 70 GHz. Invited Talk

In: 2020 German Microwave Conference (GeMiC)

  • 2020
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • TC Teisnach Optik
  • DIGITAL
  • NACHHALTIG
Zeitschriftenartikel
  • E. Hassan
  • B. Scheiner
  • F. Michler
  • M. Berggren
  • E. Wadbro
  • Franz Xaver Röhrl
  • Stefan Zorn
  • R. Weigel
  • F. Lurz
Multi-Layer Topology Optimization of Wideband SIW-to-Waveguide Transitions, vol. 68, pg. 1326-1339.

In: IEEE Transactions on Microwave Theory and Techniques

  • 2020

DOI: 10.1109/TMTT.2019.2959759

This article utilizes a topology optimization approach to design planar multilayer transitions between substrate integrated waveguides (SIWs) and rectangular waveguides (RWGs). The optimization problem is formulated based on the modal field analyses and Maxwell's equations in the time domain solved by the finite-difference time-domain (FDTD) method. We present a time-domain boundary condition based on the Klein-Gordon equation to split traveling waves at homogeneous waveguide ports. We employ the boundary condition to compute portal quantities and to devise an adjoint-field system that enabled an efficient computation of the objective function gradient. We solve design problems that include more than 105 000 design variables by using less than 400 solutions of Maxwell's equations. Moreover, a new formulation that effectively combats the development of in-band resonances in the design is presented. The transition configuration allows the direct mount of conventional RWG sections on the circuit board and aims to cover the entire K-band. The guiding structure of the optimized transition requires blind vias, which is realized by a simple and cost-efficient technique. In addition, the transition is optimized for three different setups that can be used to provide different field polarizations. The proposed transitions show less than 1-dB insertion loss and around 15-dB return loss over the frequency interval 18-28 GHz. Several prototypes are fabricated with an excellent match between the simulation and measurement results.
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • TC Teisnach Optik
  • DIGITAL
Vortrag
  • Johannes Jakob
  • R. Sammer
  • Franz Xaver Röhrl
  • Werner Bogner
  • Stefan Zorn
WR12 to planar transmission line transition on organic substrate. Invited Talk

In: 49th European Microwave Conference (EuMC)

  • 2019
  • TC Teisnach Optik
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • DIGITAL
Beitrag (Sammelband oder Tagungsband)
  • Johannes Jakob
  • R. Sammer
  • Franz Xaver Röhrl
  • Stefan Zorn
  • Werner Bogner
WR12 to planar transmission line transition on organic substrate
  • 2019

DOI: 10.23919/EuMC.2019.8910843

Transitions for planar transmission lines on printed circuit boards to rectangular waveguide are challenging to design and manufacture. This paper introduces two transitions, the first one is a broadband transition from WR12 (60-90 GHz) waveguide to a stripline (SL) and the second is a narrowband transition to a grounded coplanar waveguide (GCPW). The focus at the first transition is based on the fact that signals can be transmitted in the complete E-Band. In the process, many manufacturing possibilities were exploited. For the second transition, the focus was on manufacturability in order to achieve the most cost effective transition possible. Design, simulated and measured results will be presented.
  • TC Teisnach Optik
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • DIGITAL
Graue Literatur / Bericht / Report
  • Franz Xaver Röhrl
  • Siegfried Hildebrand
  • Johannes Jakob
  • Stefan Zorn
  • Werner Bogner
Projekt NePUMuk (Neue digitale Produktions- und Mikrostrukturierungstechnologien für Anwendungen bis 80 GHz). Abschlussbericht
  • 2019
  • TC Teisnach Optik
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • DIGITAL
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
  • 2019

DOI: 10.1109/IMWS-AMP.2019.8880079

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.
  • TC Teisnach Optik
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • DIGITAL
Zeitschriftenartikel
  • Franz Xaver Röhrl
  • Johannes Jakob
  • Werner Bogner
  • R. Weigel
  • Stefan Zorn
Bare die connections via aerosol jet technology for millimeter wave applications, vol. 11, pg. 441-446.

In: International Journal of Microwave and Wireless Technologies

  • 2019

DOI: 10.1017/S1759078719000114

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.
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • TC Teisnach Optik
  • DIGITAL
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

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

  • 2019
  • TC Teisnach Optik
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • DIGITAL
Beitrag (Sammelband oder Tagungsband)
  • Franz Xaver Röhrl
  • Johannes Jakob
  • Werner Bogner
  • R. Weigel
  • Stefan Zorn
Bare Die Connections via Aerosol Jet Technology for Millimeter Wave Applications
  • 2018
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • TC Teisnach Optik
  • DIGITAL
Beitrag (Sammelband oder Tagungsband)
  • Franz Xaver Röhrl
  • Roman Sammer
  • Johannes Jakob
  • Werner Bogner
  • R. Weigel
  • U. Hassel
  • Stefan Zorn
Cost-Effective SIW Band-Pass Filters for Millimeter Wave Applications
  • 2017

DOI: 10.23919/EuMC.2017.8230878

  • Elektrotechnik und Medientechnik
  • DIGITAL
Graue Literatur / Bericht / Report
  • Franz Xaver Röhrl
  • Siegfried Hildebrand
  • Johannes Jakob
  • Stefan Zorn
  • Werner Bogner
Projekt NePUMuk (Neue digitale Produktions- und Mikrostrukturierungstechnologien für Anwendungen bis 80 GHz). Projektbericht
  • 2017
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • TC Teisnach Optik
  • DIGITAL
Beitrag (Sammelband oder Tagungsband)
  • Franz Xaver Röhrl
  • Johannes Jakob
  • Werner Bogner
  • D. Hageneder
  • Stefan Zorn
Differential Wideband Interconnects for Organic Millimeter Wave Chip Packages. An effort to design an all-purpose RF chip package, pg. 1465-1468.
  • 2016
  • Elektrotechnik und Medientechnik
  • DIGITAL
Beitrag (Sammelband oder Tagungsband)
  • Franz Xaver Röhrl
  • Johannes Jakob
  • Werner Bogner
  • D. Hageneder
  • Stefan Zorn
Differential Wideband Interconnects for Organic Millimeter Wave Chip Packages. An effort to design an all-purpose RF chip package, pg. 536-539.
  • 2016
  • TC Teisnach Optik
  • DIGITAL
Vortrag
  • Stefan Zorn
High Frequency PCB Design up to 67 GHz. Workshop

In: European Microwave Week 2013

  • 2013
  • Elektrotechnik und Medientechnik
Beitrag (Sammelband oder Tagungsband)
  • Stefan Zorn
  • M. Gardill
  • R. Rose
  • A. Goetz
  • R. Weigel
  • A. Koelpin
A smart jamming system for UMTS/WCDMA cellular phone networks for search and rescue applications, pg. 1-3.
  • 2012

DOI: 10.1109/MWSYM.2012.6257769

Recent statistics show an increase in environmental disasters, a fact which is also perceivable to the public as reports of avalanches, earthquakes and landslides mount in media coverage. This paper introduces one part of the I-LOV project, endorsed by the German Federal Ministry of Education and Research. In this project partners from relief organizations, universities and industry investigate enhancements to disaster handling and victim rescue. One possible option is to take advantage of the fact, that a lot of people own a mobile phone today. To locate a person by his or her mobile phone requires to take over the phone by an own Base Transceiver Station (BTS). Jamming all other networks is one option to achieve that. This paper will introduce a new Field Programmable Gate Array (FPGA) based jamming system which disturbs only the absolute necessary parts of the WCDMA spectrum but reliably cuts all connections between mobile stations (MS) and existing BTS. The whole system including the signal generator and the front end will be discussed. Also measurement results will be shown.
  • Elektrotechnik und Medientechnik
Beitrag (Sammelband oder Tagungsband)
  • A. Goetz
  • R. Rose
  • Stefan Zorn
  • G. Fischer
  • R. Weigel
Performance of Coherent Time Delay Estimation Techniques for Frequency Hopping GSM Signals, pg. 25-28.
  • 2012
In this paper, the performance of coherent time delay estimation techniques for frequency hopping GSM signals is investigated. It is demonstrated that the techniques enable the usage of a substantially higher bandwidth for time delay estimation and localization purposes compared to state-of-the-art techniques. Since resolution and noise performance directly depend on the applied bandwidth of the signals, major improvements can be realized. For E-GSM 900 systems, an overall bandwidth of up to 35 MHz may be used which enables time delay estimation and localization in the scale of a few meters. The coherent time delay estimation techniques are therefore ideally suited for search and rescue applications.
  • Elektrotechnik und Medientechnik
Beitrag (Sammelband oder Tagungsband)
  • M. Gardill
  • Stefan Zorn
  • R. Weigel
  • A. Koelpin
Triggering UMTS user equipment inter-RAT cell reselection using noise jammers, pg. 1-4.
  • 2011
In this work a strategy for triggering an interradio access technology cell reselection in UMTS user equipment is proposed. All mobile devices within the effective range of a transmitter radiating a noise-like RF signal on the UMTS downlink frequency bands are forced to leave the UMTS cells and camp on non-UMTS cells, such as e.g., GSM. This allows to use a GSM based localization technique even in areas with UMTS coverage. In contrast to classical RF communication jammers which focus on disrupting the communication link, our exclusive goal is to trigger the inter-RAT cell reselection to GSM. In particular we estimate the necessary jammer RF power by examining the cell reselection procedure running in the user equipment (UE) and using some exemplary geographical scenarios. We use a hardware system to proof the results.
  • Elektrotechnik und Medientechnik
Vortrag
  • M. Gardill
  • Stefan Zorn
  • R. Weigel
  • A. Koelpin
Influencing Cell Reselection of UMTS User Equipment Using Interference Injection. Workshop

In: Workshop on Radar, Communication and Measurement (RADCOM)

  • 2011
  • Elektrotechnik und Medientechnik
Beitrag (Sammelband oder Tagungsband)
  • A. Goetz
  • Stefan Zorn
  • R. Rose
  • G. Fischer
  • R. Weigel
A time difference of arrival system architecture for GSM mobile phone localization in search and rescue scenarios, pg. 24-27.
  • 2011
  • Elektrotechnik und Medientechnik
Beitrag (Sammelband oder Tagungsband)
  • R. Rose
  • C. Meier
  • Stefan Zorn
  • A. Goetz
  • R. Weigel
A GSM-network for mobile phone localization in disaster scenarios, pg. 1-4.
  • 2011
This paper deals with an adjustment and an implementation of a modified GSM-network. This network is necessary to enable the localization of mobile phones, primarily in disaster scenarios. In order to localize a mobile phone it is mandatory, that the phone transmits a signal. As a mobile phone transmits only sporadically without request, it has to be enforced to send a signal to be localized. The enforcing of a transmission is done by means of bringing up an auxiliary GSM-network. The configuration of the GSM-network allows the usage of a special handover procedure with frequency hopping. The implementation of frequency hopping considerably increases the accuracy of applied localization techniques.
  • Elektrotechnik und Medientechnik
Beitrag (Sammelband oder Tagungsband)
  • Stefan Zorn
  • M. Maser
  • A. Goetz
  • R. Rose
  • R. Weigel
A power saving jamming system for E-GSM900 and DCS1800 cellular phone networks for search and rescue applications, pg. 33-36.
  • 2011

DOI: 10.1109/WISNET.2011.5725020

Recent statistics show an increase in environmental disasters, a fact which is also perceivable to the public as reports of avalanches, earthquakes and landslides mount in media coverage. Search and Rescue with modern localization techniques consequently attracts attention from scientific and industrial sides. This paper introduces one part of the I-LOV project, endorsed by the German Federal Ministry of Education and Research. In this project partners from relief organizations, universities and industry investigate enhancements to disaster handling and victim rescue. One possible option is to take advantage of the fact, that a lot of people own a mobile phone today. To locate a person by his or her mobile phone requires to take over the phone by an own Base Transceiver Station (BTS). Jamming all other networks is one option to achieve that. This paper will introduce a new Field Programmable Gate Array (FPGA) based jamming system which consumes little power and disturbs only small parts of the GSM spectrum but reliably cuts all connections between mobile stations (MS) and existing BTS.
  • Elektrotechnik und Medientechnik
Beitrag (Sammelband oder Tagungsband)
  • A. Goetz
  • R. Rose
  • Stefan Zorn
  • G. Fischer
  • R. Weigel
A wideband crosscorrelation technique for high precision time delay estimation of frequency hopping GSM signals, pg. 33-36.
  • 2011
  • Elektrotechnik und Medientechnik
Vortrag
  • A. Goetz
  • Stefan Zorn
  • R. Rose
  • G. Fischer
  • R. Weigel
Ortung von GSM Mobiltelefonen zur Vermissten- und Verschüttetensuche

In: Electrical and Electronic Engineering for Communication (EEEfCOM) 2011

  • 2011
  • Elektrotechnik und Medientechnik
Vortrag
  • A. Goetz
  • Stefan Zorn
  • R. Rose
  • G. Fischer
  • R. Weigel
A Time Difference of Arrival System Architecture for GSM Mobile Phone Localization in Search and Rescue Scenarios

In: Workshop on Positioning, Navigation and Communication (WPNC)

  • 2011
  • Elektrotechnik und Medientechnik
Beitrag (Sammelband oder Tagungsband)
  • A. Goetz
  • R. Rose
  • Stefan Zorn
  • G. Fischer
  • R. Weigel
A Burst Phase Analysis Technique for High Precision Time Delay Estimation of Frequency Hopping GSM Signals, pg. 1446-1449.
  • 2011
In this paper, a novel burst phase analysis technique for high precision time delay estimation of frequency hopping GSM signals is presented. The technique makes use of the increased bandwidth of frequency hopping waveforms and acquires and processes the signals in a coherent way. This way, the actual applicable bandwidth for time delay estimation and localization purposes is increased significantly. In case of E-GSM 900 systems, up to 35MHz of bandwidth can be used which enables localization of mobile phones in the order of a few meters. The technique is therefore ideally suited for search and rescue applications. The presented method may also be applied to TETRA, DECT, IEEE 802.15.4 (ZigBee) or IEEE 802.15.1 (Bluetooth) signals.
  • Elektrotechnik und Medientechnik
Vortrag
  • A. Goetz
  • R. Rose
  • Stefan Zorn
  • G. Fischer
  • R. Weigel
Algorithms for High Resolution Time Difference of Arrival Estimation for GSM Mobile Phones

In: Kleinheubacher Tagung 2011

  • 2011
  • Elektrotechnik und Medientechnik
Beitrag (Sammelband oder Tagungsband)
  • Stefan Zorn
  • G. Bozsik
  • R. Rose
  • A. Goetz
  • R. Weigel
  • A. Koelpin
A power sensor unit for the localization of GSM mobile phones for search and rescue applications, pg. 1301-1304.
  • 2011

DOI: 10.1109/ICSENS.2011.6127162

Email Print Request Permissions Recent statistics show an increase in environmental disasters, a fact which is also perceivable to the public as reports of avalanches, earthquakes and landslides mount in media coverage. Recent examples are Haiti 2010 and Fukushima 2011. Search and Rescue with modern localization techniques consequently attracts attention from scientific and industrial sides. This paper introduces a field strength measurement unit, which is part of the I-LOV project1. In this project partners from relief organizations, universities, and industry investigate enhancements in disaster handling and victim rescue. One possible option is to take advantage of the fact that most people own a mobile phone today and take it with them the whole day. To locate a person by his or her mobile phone requires to find the maximum of its radiated field strength. This paper will show a new power sensor unit for GSM signals. The complete design flow from requirements considerations to measurement results will be demonstrated. A dynamic range of 107 dB is only one of the remarkable outcomes.
  • Elektrotechnik und Medientechnik
Beitrag (Sammelband oder Tagungsband)
  • R. Rose
  • Stefan Zorn
  • A. Goetz
  • G. Fischer
  • R. Weigel
A new technique to improve AoA using dual polarization, pg. 420-423.
  • 2011
  • Elektrotechnik und Medientechnik
Beitrag (Sammelband oder Tagungsband)
  • Stefan Zorn
  • R. Rose
  • A. Goetz
  • R. Weigel
  • A. Koelpin
A New System for Mobile Phone Localization for Search and Rescue Applications
  • 2011
  • Elektrotechnik und Medientechnik
Vortrag
  • Stefan Zorn
A new Approach on Mobile Phone Localization for Search and Rescue Applications

In: ITG-Fachausschuss 7.2: Funksysteme "Funklokalisierung - sicher, schnell und genau"

  • 2010
  • Elektrotechnik und Medientechnik
Vortrag
  • Stefan Zorn
A Novel Technique for Mobile Phone Localization for Search and Rescue Applications

In: Fachausschusssitzung der Informationstechnischen Gesellschaft (ITG)

  • 2010
  • Elektrotechnik und Medientechnik
Beitrag (Sammelband oder Tagungsband)
  • Stefan Zorn
  • R. Rose
  • A. Goetz
  • R. Weigel
A novel technique for mobile phone localization for search and rescue applications, pg. 1-4.
  • 2010

DOI: 10.1109/IPIN.2010.5647107

Recent statistics show an increase in environmental disasters, a fact which is also perceivable to the public as reports of avalanches, earthquakes and landslides mount in media coverage. Search and Rescue with modern localization techniques consequently attracts attention from scientific and industrial sides. This paper introduces one part of the I-LOV project, endorsed by the Federal Ministry of Education and Research Germany. Here partners from relief organizations, universities and industry investigate enhancements to disaster handling and victim rescue. One possible option is to take advantage of the fact, that a lot of people own a mobile phone today. Future developments in the area of mobile phone detection by field intensity measurements will be addressed in this paper.
  • Elektrotechnik und Medientechnik
Vortrag
  • A. Goetz
  • Stefan Zorn
  • R. Rose
  • R. Weigel
Ortung von GSM-Mobiltelefonen in Katastrophenszenarien

In: ION-CH AHORN 2009 (Eidgenössische Technische Hochschule Zürich)

  • 2009
  • Elektrotechnik und Medientechnik
Vortrag
  • Stefan Zorn
Localization for Search and Rescue Applications. Workshop

In: 2009 IEEE Radio Wireless Symposium (RWS)

  • 2009
  • Elektrotechnik und Medientechnik
Vortrag
  • A. Goetz
  • R. Rose
  • Stefan Zorn
  • R. Weigel
Ortung von GSM-Mobiltelefonen in Katastrophenszenarien

In: Navigationskonvent 2009 der Deutschen Gesellschaft für Ortung und Navigation e.V. (DGON)

  • 2009
  • Elektrotechnik und Medientechnik
Vortrag
  • R. Rose
  • Stefan Zorn
  • A. Goetz
  • R. Weigel
Ortung verschütteter Personen anhand ihrer GSM-Mobiltelefone

In: RadioTecC – Transmit&TestSolutions 2009

  • 2009
  • Elektrotechnik und Medientechnik
Vortrag
  • Stefan Zorn
Localization for Search and Rescue Applications. Workshop

In: EEEfCOM 2009

  • 2009
  • Elektrotechnik und Medientechnik
Beitrag (Sammelband oder Tagungsband)
  • Stefan Zorn
  • H. Ehm
  • R. Weigel
A Novel Technique for Determining Kernels of Volterra Based Behavioral Models for RF Amplifiers, pg. 246-249.
  • 2008

DOI: 10.1109/EUMC.2008.4751434

This paper presents a new technique to determine the kernels of Volterra series based behavioral models of RF amplifiers in the frequency domain. A model with three kernels and a memory length of one is developed. The kernels of this model are assigned only by using a two-tone test. No knowledge of the integrated circuit is needed to determine all model parameters. The derivation of such a model out of well known mathematical basics is shown such as the used measurement setup. Measured data and simulation deliverables are being compared and show a good match. A comparison between a Saleh model and the new modeling approach concludes this paper.
  • Elektrotechnik und Medientechnik