Institute for Electronics Engineering

Erlangen, Germany

Institute for Electronics Engineering

Erlangen, Germany
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Kissinger D.,Ihp Microelectronics | Kissinger D.,TU Berlin | Nehring J.,Institute for Electronics Engineering | Oborovski A.,Institute for Electronics Engineering | And 4 more authors.
Conference Proceedings - 13th IEEE International NEW Circuits and Systems Conference, NEWCAS 2015 | Year: 2015

This paper presents our recent work towards state-of-the-art integrated test concepts for the in-situ characterization of silicon-integrated millimeter-wave devices and transceiver components for radar and communication applications. Narrowband as well as ultra-broadband integrated network analysis solutions for a variety of frequency bands ranging from 50 to 120 GHz are outlined. In this context, direct-conversion and heterodyne architectures and their respective implementations in silicon-germanium technologies are discussed. © 2015 IEEE.


Dudek M.,MBDA Systems Germany | Nasr I.,Infineon Technologies | Bozsik G.,Institute for Electronics Engineering | Hamouda M.,Institute for Electronics Engineering | And 2 more authors.
IEEE Transactions on Vehicular Technology | Year: 2015

In this contribution, we present a novel beam-control approach for automotive phased-Array radar frontends. Since radar sensors are considered to be one of the means to enable future advanced safety functionality, we previously developed a system simulation environment that incorporates all involved domains and calculates all relevant high-level effects accurately. Subsequently, a generic phased-Array FMCW radar frontend has been implemented and parameterized according to state-of-The-Art SiGe components operating in the 77 GHz band. To demonstrate the advantages of an adaptively controlled beam for future safety applications, it is focused on curved traffic situations, which are calculated in a co-simulation incorporating a 3D-raytracer. A novel method for the control of the antenna characteristic is derived, which takes the specific curve geometry into account, and predictive enhancement features applied to it are elucidated, before their utilization and the resulting increase of system performance is computed. By adaptively coupling the radar sensor to the steering angle, thus directing its beam together with the ego-vehicle into the curve, its measurement range can be distinctly increased, which is providing more time for the safety system to react. This set of facts is first examined in a static view, by regarding only some specially selected timesteps, before a thorough analysis of the complete traffic scenario reveals the system's advantages from a dynamic point-of-view. As a result, the performance improvement of phased-Array frontends applying adaptive beam-control compared to those with body-fixed nonsteerable beams is proven. Moreover, some results which are to be expected from such an advanced system, in case its full potential is evolved by implementing a scanning functionality, are provided as an outlook on future developments. © 1967-2012 IEEE.


Kissinger D.,Ihp Microelectronics | Kissinger D.,TU Berlin | Girg T.,Institute for Electronics Engineering | Beck C.,Institute for Electronics Engineering | And 5 more authors.
2015 IEEE MTT-S International Microwave Symposium, IMS 2015 | Year: 2015

This paper provides an overview of millimeter-wave transceiver frontend concepts and realizations for wireless multi-Gbps communication applications. Different state-of-the-art heterodyne and direct-conversion frontend implementations in silicon-germanium technology (SiGe) with their related applications are presented. These include highly compact embedded transceiver solutions featuring novel antenna-in-package concepts for low-cost short-range indoor 60 GHz broadband Wi-Fi/WLAN and WPAN access points. Furthermore, highly integrated multi-band transmitter and receiver chipsets in the 70/80GHz E-Band as well as the complete 50-100 GHz frequency range for outdoor wireless backhaul point-to-point communication links and fixed local area network extension are outlined. © 2015 IEEE.


Kissinger D.,Ihp Microelectronics | Kissinger D.,TU Berlin | Kissinger D.,Institute for Electronics Engineering | Schwarzmeier A.,Institute for Electronics Engineering | And 6 more authors.
2015 IEEE Topical Conference on Wireless Sensors and Sensor Networks, WiSNet 2015 | Year: 2015

This paper presents an overview of wireless integrated sensor node realizations for indoor monitoring and localization applications. Depending on the targeted application scenario different wireless sensor node implementations based on either high-performance processors or semi-passive radio-frequency identification (RFID) cores are outlined. The presented high-performance node realization with monitoring and seamless indoor and outdoor localization capability can operate independently for a duration of one day and additionally features wireless charging. Furthermore, a UHF RFID Gen2 sensor tag for indoor localization and fall detection is presented that enables a battery lifetime of approximately one month. Finally, ultra-low-power UHF RFID sensor node concepts based on sub-threshold wake-up receivers are introduced that can achieve operational times of several years for specific low duty cycle scenarios. © 2015 IEEE.


Trenz F.,Institute for Electronics Engineering | Hofmann M.,Institute for Electronics Engineering | Weigel R.,Institute for Electronics Engineering | Kissinger D.,Ihp Microelectronics | Kissinger D.,TU Berlin
European Microwave Week 2015: "Freedom Through Microwaves", EuMW 2015 - Conference Proceedings; 2015 45th European Microwave Conference Proceedings, EuMC | Year: 2015

In this paper, a planar broadband sixport reflectometer structure is presented. A frequency range from 3 to 29 GHz could be achieved by merging broadband components into a single multilayer PCB stackup with an area of 66×55 mm2. The reflectometer architecture used herein allows a frequency independent q-point configuration of the sixport by implementing microstrip linelength compensation. Broadband matching of around-10 dB has been achieved at all ports in a frequency range from 1 to 30GHz. Furthermore, sufficient coupling from DUT port to measurement output could be reached in a range from 2 to 29 GHz. Frequency compensation of the structure and an optimal q-point constellation of 120-120-120 have been verified by measurement. Due to its broadband functionality, compactness and cost efficiency, the proposed system is suitable for a wide range of microwave measurement applications. © 2015 EuMA.


Nehring J.,Institute for Electronics Engineering | Bartels M.,Institute for Electronics Engineering | Weigel R.,Institute for Electronics Engineering | Kissinger D.,Institute for Electronics Engineering | And 2 more authors.
2015 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems, BioWireleSS 2015 | Year: 2015

This paper proposes a permittivity sensitive phase-locked loop (PLL) for the characterization of biologically and medically relevant materials and liquids in a frequency frange from 19.2 GHz to 20.8 GHz. It utilizes a custom design voltage controlled oscillator (VCO) with a tank-integrated capacitive sensor fabricated on a SiGe process. A change of the permittivity opposed to the sensor leads to a frequency shift which will be regulated by the PLL. Thus, the permittivity of a MUT is directly mapped to the resulting DC tuning voltage generated by the control loop. The sensor is configured and read-out by a microcontroller. The system is used to characterize solutions of ethanol-methanol mixtures with concentration differences of 5 percent around a mixture ratio of 50:50. © 2015 IEEE.


Trenz F.,Institute for Electronics Engineering | Weigel R.,Institute for Electronics Engineering | Kissinger D.,Ihp Microelectronics | Kissinger D.,TU Berlin
2016 21st International Conference on Microwave, Radar and Wireless Communications, MIKON 2016 | Year: 2016

This paper presents a compact dehydration measurement method, keeping in mind a system integration in a wristwatch housing. In contrast to the conventional measurement approach using two measurement antennas, the proposed measurement setup uses only one antenna and one metallic reflector. Measurements have been performed using a patch antenna immersed in a steel basin filled with a tissue-equivalent liquid. The microstrip antenna has been optimized for an application in the 2.45GHz ISM band and features a biocompatible passivation layer and a rigid aluminum housing. The tissue-equivalent liquid mimicks dielectric tissue properties over a hypotonic hydration change. The steel basin acts as a liquid retainer and as a metallic reflector for the measurement setup. Measurements with the proposed setup have shown, that a clear distinction of physiologically relevant hydration levels is possible. © 2016 IEEE.


Talai A.,Institute for Electronics Engineering | Mann S.,Institute for Electronics Engineering | Weigel R.,Institute for Electronics Engineering | Koelpin A.,Institute for Electronics Engineering
WiSNet 2014 - Proceedings: 2014 IEEE Topical Conference on Wireless Sensors and Sensor Networks | Year: 2014

Microwave interferometry enables the possibility of highly accurate distance measurements by evaluating phase differences. The reflected power is a function of the effective radar cross-section, the measurement distance, and the attenuation in air. An irradiated plain water surface shows a temperature-dependent behavior by means of the reflected power. This is due to the fact that the complex permittivity of water, as well as the refractive index, strongly depends on the water temperature within the 24 GHz Industrial, Scientific and Medical (ISM) band. Consequently, the effective radar cross-section depends on the temperature as well. This paper describes a method of monitoring the water temperature as a new application of an interferometric radar in Six-Port technology for water level measurements. © 2014 IEEE.


Barbon F.,Institute for Electronics Engineering | Lindner S.,Institute for Electronics Engineering | Mann S.,Institute for Electronics Engineering | Linz S.,Institute for Electronics Engineering | And 2 more authors.
WiSNet 2014 - Proceedings: 2014 IEEE Topical Conference on Wireless Sensors and Sensor Networks | Year: 2014

Six-Port receivers require a precise power measurement of all their four output channels. However, due to temperature drift, fabrication and component tolerances detectors' performance may have some degradation, which limits the measurement accuracy. Thus, an in-situ detector characterization is necessary. In this paper, a fast and simple solution for estimating the diode detector's characteristics is presented, which is ideal for Six-Port diode power detectors. This method is fast and can be easily implemented on a microcontroller. © 2014 IEEE.

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