Voltage rectification: The energy-bottleneck for passive RFID systems (2009)
Feldengut, T., Kolnsberg, S., Kokozinski, R.
Efficient voltage rectification is one the main challenges in passive UHF RFID. When the tag is located several meters from the base station, the amplitude of the UHF signal is critically low. The...
Schmidt, A., Feldengut, T., Kolnsberg, S., Kokozinski, R.
CMOS (Complementary Metal Oxide Semiconductor) analog circuit design for passive RFID transponder systems requires significant decrement of power consumption for almost every system component. The...
A UHF voltage multiplier circuit using a threshold-voltage cancellation technique (2009)
Feldengut, T., Kokozinski, R., Kolnsberg, S.
The operating range of passive UHF transponder systems is largely determined by the tag current consumption and the rectifier efficiency. Reading ranges of several meters have been reported for many...
High resolution delay locked loop for time synchronization with multi path mitigation (2009)
Accurate localization Systems, based on the measurement of the time of flight of a signal between radio devices, also known as Real Time Location Systems (RTLS) are becoming increasingly important...
A passive long-range UHF transponder with integrated temperature sensor (2008)
Feldengut, T., Wang, J., Kolnsberg, S., Kokozinski, R.
Recent development in UHF RFID Tags has been focused on the optimization of the powering and communication range of the reader/tag system. The use of low threshold Shottky-diode rectifiers and the...
A concept for the analysis of cross sensitivities in modern RFID systems (2008)
Wang, J., Feldengut, T., Kolnsberg, S., Kokozinski, R.
In this paper, a concept for the analysis of various cross sensitivities in RFID systems is described. A modern RFID transponder system consists of several analog blocks, a digital section, and...
An analog front end for a passive UHF transponder with temperature sensors (2008)
Feldengut, T., Wang, J., Kolnsberg, S., Kokozinski, R.
We present the analog front-end for a passively powered UHF transponder with integrated temperature sensor that was designed for a 0.35 µm CMOS process with EEPROM, Schottky diodes, and double poly...
Wireless power transmission in sensor transponder systems (2008)
Feldengut, T., Kolnsberg, S., Kokozinski, R.
Wireless power transmission is becoming widespread in different RFID applications such as inventory management, supply chain monitoring, or access control to buildings. These passive transponder...
An approach to reduce the risk of network dropouts through dynamic role assignments (2007)
Pfänder, P., Coers, A., Kokozinski, R.
ZigBee aims to be one of the major standards for short-range wireless networks. Based on IEEE 802.15.4, ZigBee inherits the concept of FFDs (Full Function Devices) and RFDs (Reduced Function Devices)...
Technology-caused performance limitation of the common-gate LNA (2007)
Stücke, T., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
In this paper, the performance limitation of common-gate LNAs (CG-LNAs) caused by short channel effects is presented. The analysis is based on equations, which describes the behavior of the MOSFET...
Mehrwert für Applikationen durch Kombination von RFID+S-Systemen und WPANs (2007)
Kolnsberg, S., Coers, A., Feldengut, T., Kokozinski, R., Lörcks, M.
Aktuell ist ein wachsender Bedarf an drahtlosen Kommunikationssystemen mit kurzer Reichweite in Verbindung mit RFID (Radio Frequency IDentification ) Systemen zu beobachten. Verschiedene Transponder...
T. Fedtschenko, R. Kokozinski, S. Kolnsberg
In modernen drahtlosen Systemen sind niedriger Stromverbrauch und das Betreiben bei niedriger Spannung (Low Voltage Operation) von entscheidender Bedeutung. Dabei ist für viele elektronische...
LNA for Low-Power, Low Data Rate PAN Applications (2006)
T. Stücke, N. Christoffers, R. Kokozinski, S. Kolnsberg, B. J. Hosticka
In this paper a common-gate LNA is presented, which is used in a low-power IEEE 802.15.4 receiver with severer requirements on the current consumption. The LNA is designed in a 0.25 μm CMOS...
LNA for low-power, low data rate PAN applications (2006)
Stücke, T., Christoffers, N., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
In this paper a common-gate LNA is presented, which is used in a low-power IEEE 802.15.4 receiver with severer requirements on the current consumption. The LNA is designed in a 0.25 µm CMOS...
Graphical optimization of common-gate LNA (2006)
Stücke, T., Christoffers, N., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
In this paper a novel optimization strategy for common gate LNAs (CG-LNAs) is presented. It based on the modeling of the MOSFET behavior with its intrinsic and extrinsic parasitics in all possible...
Fedtschenko, T., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
In modernen drahtlosen Systemen sind niedriger Stromverbrauch und das Betreiben bei niedriger Spannung (Low Voltage Operation) von entscheidender Bedeutung. Dabei ist für viele elektronische...
The impact of technology parameters on the performance of common-Gate LNAs (2006)
Stücke, T., Christoffers, N., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
In this paper the impact of short channel effects on the performance of common-gate LNAs (CG-LNAs) is presented. It based on the modeling the MOSFET behavior including its intrinsic and extrinsic...
A low power, variable gain common-gate LNA (2006)
Stücke, T., Christoffers, N., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
In this paper a novel variable gain common-gate LNA is presented, which features adaptive gain dependent bias current. The CG-LNA is designed in a 0.25 µm CMOS technology and consumes only 831 µA...
M. Bresch, J. Shi, R. Kokozinski
Due to recent researches on traffic accidents with vulnerable road users (VRUs), several measures revealed a great opportunity of reduction. However, all measures applied so far failed to reduce the...
BER optimization for micro power receivers using quick and accurate system simulation (2005)
Stücke, T., Christoffers, N., Kokozinski, R., Kolnsberg, S.
The designer of practical receivers must deal with several problems in the analog as well as in the digital part. All these undesired effects have a large impact on the system performance, which is...
Christoffers, N., Lerch, R.G., Hosticka, B.J., Kolnsberg, S., Kokozinski, R.
Current-mode-logic circuits play an important role in the design of CMOS frequency synthesizers for modern wireless digital communication systems. They provide the building blocks for frequency...
Frequenzgenerator mit einer Phasenregelschleife (2004)
Christoffers, N., Kokozinski, R., Hosticka, B., Kolnsberg, S.
WO2004086210 A UPAB: 20041104 NOVELTY - A camera (24) detects the point of impingement (20,22,56) of electromagnetic radiation beams (42,44,45) on surface (18), from a hand-held radiation unit (12)....
System simulation of IEEE 802.15.4 wireless sensor netwoks (2004)
Stücke, T., Christoffers, N., Kokozinski, R., Kolnsberg, S.
IEEE 802.15.4 and ZigBee are new upcoming standards for low power wireless communications systems. A key feature is a possible a battery durability of several years. They address diverse applications...
Ochsenbrücher, R., Holzapfel, M., Kokozinski, R., Kolnsberg, S., Bögel, G. Vom
For a better treatment and analysis of the eye disease "Glaucoma", a continuous measurement and knowledge of the eye's internal (intraocular) pressure is of particular importance. The transponder...
Design methodology for CMOS frequency-synthesizers for low-power low-cost FSK-transceivers (2004)
Christoffers, N., Kolnsberg, S., Kokozinski, R., Stücke, T., Hosticka, B.J.
CMOS wireless digital transceivers using frequency-shift-keying (FSK) can operate at low power consumption and chip area for several reasons: relaxed linearity requirement of the power amplifier due...
Characterizing wireless transmission channels for passive transponder systems (2004)
Bresch, M., Klein, B., Kokozinski, R., Kolnsberg, S.
This contribution contains a combined characterization of the energy transmission channel and the transponder ASIC of passive transponder systems. This characterization takes the reader antenna as...
Christoffers, N., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
Frequency-hopping-spread-sprectrum wireless digital communication-systems impose stringent requirements on both phase noise and settling time of PLL based frequency synthesizers employed in receivers...
Christoffers, N., Kokozinski, R., Kolnsberg, S., Hosticka, B.J.
PLL-basierte Frequenzgeneratoren erzeugen die in heutigen digitalen drahtlosen Kommunikationssystemen benötigten Trägersignale. Sogenannte Sigma-Delta Fractional-N Frequenzgeneratoren können mit...
Challenges to CMOS-hardware design for wireless network terminals (2002)
Ida, I., Kokozinski, R., Stammen, J., Greifendorf, D.
On the way to mobile software defined radio terminals (SDR terminals), a change of the design philosophy for appropriate microelectronic hardware is neccesary. The desired reconfigurability must be...
The evolution of hardware platforms for mobile "software defined radio" terminals (2002)
Kokozinski, R., Greifendorf, D., Stammen, J., Jung, P.
The deployment of communication systems mainly depends on the availability of appropriate microelectronics. Therefore, the Fraunhofer-Institut für Mikroelektronische Schaltungen und Systeme (IMS)...
A new detector architecture for optical pickup units in DVD systems (2002)
Hehemann, I., Brockherde, W., Bußmann, A., Hofmann, H., Kemna, A., Kokozinski, R., ...
This paper describes a new detector architecture for optical pickup units in DVD systems. Apart from data recovery it allows the detection of the spatial light intensity distribution to facilitate a...
A system independent data compressor for wireless Internet access (2002)
Coers, A., Bruck, G., Jung, P., Kokozinski, R.
In this contribution we present a data compression technology for wireless Internet access. The presented data compressor uses a proxy server/client combination technology, which enables any Internet...
Reconfigurable radio: how to make multimedia mobile (2002)
Kokozinski, R., Greifendorf, D., Stammen, J., Jung, P.
On the way to mobile software defined radio (SDR) terminals, a change of the design philosophy for appropriate microelectronics is necessary. The desired flexibility or reconfigurability must be...
ADSL analog front-end design for testability (2002)
Bresch, M., Hosticka, B.J., Klein, B., Kokozinski, R., Teßmann, D., Tagami, K., ...
Das in diesem Beitrag vorgestellte ADSL Analog Front-End (AFE) ist ein besonderes Design für gute Testbarkeit. Der Chip läßt sich durch externe Signale für den Test beliebiger Komponenten...
Accurate CMOS current-mode-filters for high frequencies and low power consumption (2002)
Christoffers, N., Hosticka, B.J., Kokozinski, R.
Analog signal processing in many applications requires low-noise, low-power filters that are little sensitive to element value variations. To meet such requirements the leapfrog approach can be...
Current-mode filters for high frequencies realized in CMOS technologies (2002)
Christoffers, N., Hosticka, B.J., Kokozinski, R.
Analog signal processing in many applications requires low-noise, loe-power filters that are little sensitive to element value variations. To meet such requirements the leapfrog approach can be...
A survey of oscillator phase-noise: Analysis and simulation (2002)
Zhang, Z., Christoffers, N., Hosticka, B.J., Kaiser, T., Kokozinski, R., Lin, J.
Oscillator phase noise is of major concern in the design of transceivers used in modern wirelss digital communication devices. It dcreases the selectivity of the recievers and increases the bandwidth...
Behavioral Modeling for High-Level Synthesis of Analog and Mixed-Signal Systems from VHDL-AMS (2002)
Alex Doboli, Ranga Vemuri, B. J. Hosticka, W. Brockherde, R. Klinke, R. Kokozinski, ...
High-level synthesis is highly demanded for managing the complexity of analog and mixed-signal system designs. However, synthesis methods are currently in their infancy. The absence of a high-level...
ADSL front-end for broadband communications (2001)
Kokozinski, R., Bresch, M., Teßmann, D.
A novel low-power low-voltage 0.25 µm CMOS ADSL analog front-end with 2.5 V power supply was developed. The analog front-end consists of amplifiers, filters, converters, and a tunable oscillator....
A highly flexible evaluation system for telecommunication analog front-ends (2001)
Bresch, M., Hammerschmidt, D., Hosticka, B.J., Kemmerling, M., Klein, B., Kokozinski, R., ...
As technological progress leads to increasing data transmission rates, use of digital transmission is inevitable. However, since analog waveforms are involved in digital transmission, analog...
Low Power DA- und AD-Umsetzer für DSL-Anwendungen (2000)
Teßmann, D., Bresch, M., Hammerschmidt, D., Hesener, M., Hosticka, B.J., Kemna, A., ...
In diesem Beitrag wird die Realisierung von hochauflösenden und schnellen Digital-Analog- (DAC) und Analog-Digital Umsetzern (ADC) für DSL-Anwendungen beschrieben. Die beiden Umsetzer wurden aus...
Ein 2,5V 0,25µm CMOS ADSL Analog-Front-End IC (2000)
Kokozinski, R., Bresch, M., Hammerschmidt, D., Hesener, M., Hosticka, B.J., Kemna, A., ...
Dieser Beitrag beschreibt die Realisierung eines ADSL Analog-Front-Ends. Der Baustein, der in einer 0,25µm CMOS Technologie gefertigt wurde, integriert sämtliche analogen Funktionalitäten für...
A low-voltage low-power 0.25 µm CMOS ADSL analog front-end IC (2000)
Kokozinski, R., Bresch, M., Hammerschmidt, D., Hesener, M., Hosticka, B.J., Kemna, A., ...
A 0.12 µm 2.5V CMOS analog front-end IC for an ADSL system is presented. The IC contains all analog functions including gain-controlled transmit and receive amplifiers, highly linear continuous-time...
LVDS I/O cells with rail-to-rail receiver input for SONET/SDH at 1.25 Gb/s (2000)
Vogel, U., Jähne, R., Ulbricht, S., Bunk, G., Steinert, M., Zimmermann, C., ...
Low voltage differential signaling (LVDS) has developed as a data transmission standard for on-chip, on-board/backplane or cable connections. This paper reports design criteria and measurement...
Sigma-Delta-Modulator 3. Ordnung mit gechoppten Differenzpfad-SC-Integratoren (1998)
Hammerschmidt, D., Kokozinski, R., Wieland, F., Andersch, M., Dathe, L., ...
Für eine hochgenaue Streckenmessung wurde ein Sigma-Delta-Modulator 3. Ordnung realisiert, der bei einer Basisbandfrequenz von 10kHz und einer Überabtastrate (OSR) von 125 ein...
Analoge CMOS-Hochfrequenz-Schaltungstechnik für niedrige Versorgungsspannungen (1997)
Durch die Entwicklung von CMOS-Kurzkanaltechnologien sind integrierte MOS-Hochfrequenzschaltungen realisierbar, die Signale im Mikrowellenbereich verarbeiten können. In dieser Arbeit werden neue...
Field programmable analog devices: Neue Wege für die analoge Basisbandsignalverarbeitung (1997)
Bender, S., Budde, W., Kokozinski, R.
Nachfolgend wird ein flexibel programmierbarer Baustein für die zeitkontinuierliche analoge Signalverarbeitung vorgestellt. Dieser Baustein stellt ein Analogon zu den digitalen FPGAs dar und wird...
Ein analoges 40 MHz Bandpaßfilter für niedrige Versorgungsspannungen (1997)
Kokozinski, R., Maschmann, M., Brockherde, W., Hosticka, B.J., Schardein, W.
Der Beitrag beschreibt ein integriertes analoges Bandpaßfilter, realisiert in einer 1 Mikrometer BiCMOS-Technologie. Die Implementierung der Schaltung basiert auf einer Differenzpfad-Gyrator-Technik...
A programmable circuit for analog signal processing (1996)
Bender, S., Brockherde, W., Budde, W., Kokozinski, R., Schardein, W., Weghaus, B.
A BiCMOS field programmable analog cell array with continuous time fully differential analog signal processing is presented. As a counterpart to digital FPGAs can be configured by software and...
BiCMOS-Schaltungen für Hochfrequenz- und Basisband-Signalverarbeitung (1996)
Bender, S., Budde, W., Bunk, G., Kokozinski, R.
Die Kombination der Bipolar- und der CMOS-Schaltungstechnik auf einem Chip eröffnet dem Schaltungsentwickler ein großes Potential zur Realisierung komplexer Systemkonzepte. Die hohe Steilheit und...
Analoge FPGAs in BiCMOS-Technologie für die analoge Signalverarbeitung (1996)
Bender, S., Budde, W., Kokozinski, R.
In diesem Vortrag wird ein flexibel programmierbarer Baustein für die zeitkontinuierliche Signalverarbeitung vorgestellt. Dieser Baustein stellt ein Analogon zu den digitalen FPGAs dar und wird wie...
Analoge FPGA in BiCMOS-Technologie für die Signalverarbeitung (1996)
Bender, S., Brockherde, W., Budde, W., Kokozinski, R.
Vorgestellt wird ein flexibel programmierbarer Baustein für die zeitkontinuierliche Signalverarbeitung. Dieser Baustein stellt ein Analogon zu den digitalen FPGA dar und wird wie diese über eine...
Analog Low-Voltage-CMOS-Schaltungen (1996)
Kokozinski, R., Brockherde, W., Hammerschmidt, D., Hosticka, B.J.
Ein 1,5-GHZ-Breitbandverstärker mit Impedanzanpassung in Standard 1,1 µm CMOS-Technologie (1996)
Kokozinski, R., Brockherde, W., Hosticka, B.J.
Dieser Beitrag beschreibt neue Schaltungstechniken zur Realisierung von Breitbandverstärkern mit Impedanzanpassung für Standard CMOS Technologien. Die vorgestellte Schaltungskonfiguration verwendet...
Mikrowellentechnologie auf hochohmigem SIMOX-Substrat (1995)
Barthel, W., Budde, W., Burbach, G., Eggert, D., Hübler, P., Hürrich, A., ...
Microwave wideband amplifiers in bulk-CMOS and CMOS/SIMOX technologies (1995)
Barthel, W., Brockherde, W., Budde, W., Hosticka, B.J., Kokozinski, R., Zimmer, G.
This contribution investigates the feasibility of realization of analog microwave circuits in submicron CMOS technologies, particulary in bulk-CMOS and CMOS/SIMOX. The investigation concentrates on...
Low-voltage CMOS analog circuits (1995)
Hosticka, B.J., Brockherde, W., Hammerschmidt, D., Kokozinski, R.
This contribution addresses the issue of low-voltage analog circuit design in CMOS technology. In particular, three areas of design will be discussed: switched-capacitor circuits, continuous-time...
CMOS HF-Stromverstärker mit Spannungsgegenkopplung für niedrige Betriebsspannungen (1995)
Kokozinski, R., Hosticka, B.J., Brockherde, W.
Dieser Beitrag beschreibt neue analoge Schaltungstechniken für Bulk-CMOS sowie CMOS/SIMOX Technologien für sehr hohe Geschwindigkeiten bei gleichzeitig geringer Betriebsspannung. Die Untersuchungen...
An 1.5 V cyclic A/D converter CMOS technology (1995)
Hammerschmidt, D., Brockherde, W., Hosticka, B.J., Kokozinski, R.
A low-cost 1.5 V A/D converter has been realized in standard CMOS technology. It combines low-voltage switched-capacitor technique with a differential signal path. The conversion is programmable and...
Rule-based adaptive configuration selection for analog design systems (1994)
Kokozinski, R., Hosticka, B.J., Klinke, R.
A configuration selection tool for rule-based analog IC design is presented. A fast determination of proper analog circuit configuration plays an eminent role in the initial design phase. This...
Design methodology for analog monolithic circuits (1994)
Hosticka, B.J., Brockherde, W., Klinke, R., Kokozinski, R.
This contribution describes an approach to design methodology for analog monolithic circuits. The underlying philosophy relies on use of three description domains - functional, structural, and...
Rule-based analog circuit design (1992)
Hosticka, B.J., Klinke, R., Kokozinski, R., Münster, I.
A prototype of rule-based environment for analog integrated circuit design is presented. It features a hierarchical design style, multifunctionality, and adaption capability for its knowledge bases....