A5034580470- Microwave Engineering and Waveguides
- Advanced MEMS and NEMS Technologies
- Acoustic Wave Resonator Technologies
- Particle Detector Development and Performance
- CCD and CMOS Imaging Sensors
- Radiation Detection and Scintillator Technologies
- Radar Systems and Signal Processing
- Advanced Semiconductor Detectors and Materials
- Advanced SAR Imaging Techniques
- Photonic and Optical Devices
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Optimization
- Microwave Imaging and Scattering Analysis
- Antenna Design and Analysis
- Semiconductor materials and interfaces
- Mechanical and Optical Resonators
- Electromagnetic Compatibility and Noise Suppression
- Optical Coatings and Gratings
- Electron and X-Ray Spectroscopy Techniques
- Radio Astronomy Observations and Technology
- Semiconductor Quantum Structures and Devices
- Geophysics and Sensor Technology
- Semiconductor Lasers and Optical Devices
- Semiconductor materials and devices
- Microwave and Dielectric Measurement Techniques
Airbus (Germany)
2016-2019
Sensors (United States)
2008-2009
Daimler (Germany)
1994-2002
Messerschmitt-Bölkow-Blohm (Germany)
1987-1991
Technical University of Munich
1985-1990
MBDA (Germany)
1990
This paper presents an anti-drone system which consists of a 3D Frequency Modulated Continuous Wave (FMCW) Multiple Input Output (MIMO) radar and directional jammer working at 2.4 GHz. The is continuously scanning certain area waits until target enters the to secure. A tracking algorithm evaluates movement target. If potential threat identified, antenna, mounted on two-axis gimbal, steered With use control signal drone can be superimposed by strong jamming makes controlling impossible. Even...
Multiple-input multiple-output (MIMO) radars have been shown to improve target detection for surveillance applications thanks their proven high-performance properties. In this paper, the design, implementation, and results of a complete 3-D imaging frequency-modulated continuous-wave MIMO radar demonstrator are presented. The sensor working frequency range spans between 16 17 GHz, proposed solution is based on 24-transmitter 24-receiver architecture, implemented by time-division multiplexing...
An advanced large-area silicon photodiode and X-ray detector, called the spiral drift was designed, produced, tested. The detector has a very small capacitance of about 0.1 pF leakage current under 1 nA at room temperature. All electrons generated silicon-silicon oxide interface are collected on guard rather than contributing to current. decrease reduces parallel noise detector. This anode with capacitively matched preamplifier may improve energy resolution detectors operating temperature 50...
A novel biasing concept made it possible to implement capacitive coupling in a double-sided silicon strip detector system with relatively simple production process. Capacitive eliminates the problem of electronic readout saturation caused by leaky strips. This advantage is particular value for n-side, where current differences input voltage levels electronics could make any measurements impossible. Double-sided increases position information and advantageous use systems compactness...
This paper presents the optimization of low-complexity RF-MEMS technology for W-Band, fabricated switches and phase shifters. All devices are on a thinned silicon substrate using only one metallization. The basic W-Band switch used shifter is presented in detail showing very wide band RF-behaviour with an almost constant insertion loss about -0.3 dB from 50 - 100 GHz. 3-bit itself design frequency 76.5 GHz realized loaded-line two switched-line elements. mean whole -5.3 deviation was...
Ever since the era of autonomous systems started, multisensor platforms have become a key topic in aerospace, automotive, and robotics industries. Multifunctional integrate more than one sensor and/or actuator device are capable creating synergies between them. As consequence, their performance is superior compared to single-sensor systems, for different reasons [1]-[3].
This paper presents microwave capacitive RF-MEMS switches based on a novel simplified fabrication process. The devices are fabricated silicon substrate using only one metallisation layer. For the coupling of switch, an implanted conductive region and thermally grown oxide is used instead second metal layer additional dielectric In addition, formerly bimorph replaced by single-metallisation concept, which results in increased temperature range operation. process as well switch topology lead...
In this paper, an electrically steerable antenna for communication at Ka-band is demonstrated. The itself a microstrip array made out of low-loss LTCC (Low Temperature Co-fired Ceramics) DuPont 943 substrate. in the H-plane aperture by means RF-MEMS phase shifters. shifters are 3-bit processed EADS Innovation Works technology. They integrated hybrid fashion onto ceramic substrate antenna. paper describes different development steps complete phased antenna, including design array, and...
This paper presents tunable microstrip filters in the GHz range, fabricated on silicon a very low complexity RF-MEMS process with only one metallization layer. Affected by mechanic stress gradient metallization, free standing parts of structure roll up. These bended beams can be switched onto substrate electrostatic actuation and thus tune resonance frequency changing /spl epsiv//sup r eff/ resonant structure. The technology offers possibility to realize small insertion loss less than 1.5dB...
This paper presents an overview on the opportunities and challenges for RF-MEMS based microwave circuits in aeronautic space domain. The most promising applications, like passive phased array antennas, active antennas reconfigurable systems are discussed their different requirements terms of performance reliability highlighted. Several demonstrators already built achievements made by EADS InnovationWorks presented.
We present a compact multiple-input multiple-output (MIMO) radar sensor for near-to medium-range three-dimensional (3D) imaging and target object detection. The MIMO contains 16 transmit (Tx) receive (Rx) antenna elements employs frequency modulated continuous wave (FMCW) modulation scheme. Orthogonality between the transmitted signals is ensured by means of time-division multiplexing (TDM) First, brief description overall system architecture given. Then, two distinctive array designs are...
A low complexity, low-loss RF-MEMS switch suited for high-power applications is presented. The was originally designed small-signal operation in the Ku-band and able to handle at least 6 W RF power hot-switching mode. In addition small- large-signal S-parameter measurements, a brief explanation of its properties given.
In this paper, a fixed-frequency filter and two RF-MEMS based frequency-agile filters at Ku-band are demonstrated. All designed in so-called Substrate Integrated Cavity (SIC) topology, they processed LTCC (Low Temperature Co-fired Ceramics) DuPont 943 substrate. The tunable steered over frequency by means of coplanar stubs, whose electrical length is adjustable. stubs cantilevers on silicon. paper describes the design fixed filters, it proposes hybrid integration concept silicon chips onto...
In this paper, a one-dimensional electrically steerable RF-MEMS phased array antenna for operation at 9.5 GHz is demonstrated. The itself four by eight patch realised on low-loss Teflon substrate and the feed network made out of same one-to-four corporate network. phase shifting necessary to steer main beam in H-plane aperture achieved 3 bit shifters, which are integrated hybrid fashion between paper describes integration different elements standalone demonstrator. design shifters presented...
The authors have fabricated 280- mu m-thick fully depletable p-n charge -coupled devices (CCDs) on high-resistivity silicon ( approximately 2.5 k Omega -cm). Their operation is based the semiconductor drift-chamber principle. They are designed as energy- and position-sensitive radiation detectors for (minimum) ionizing particles X-ray imaging. Two-dimensional device modeling demonstrates basic charge-transfer mechanisms. Prototypes of been tested in static dynamic conditions. A preliminary...
This paper presents the design and realization of a 3-bit RF-MEMS based phase shifter at 34 GHz using very-low complexity highly reliable technology on silicon. The three bits circuit use different techniques to achieve necessary shifts. One new technique, dual-state microstrip line, is enabled by presented changes effective epsiv <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</sub> transmission line lifting part it into air. leads change in...