Dirk Jansen

• Prof. Dr.-Ing.
• Professor Emeritus at Offenburg University of Applied Sciences

The growing demand for active medical implantable devices requires data and or power links between the implant and the outside world. Every implant has to be encapsulated from the body by a specific housing and one of the most common materials used is titanium or titanium alloy. Titanium thas the necessary properties in terms of mechanical and chem...

Battery-less passive sensor tags based on RFID or NFC technology have achieved much popularity in recent times. Passive tags are widely used for various applications like inventory control or in biotelemetry. In this paper, we present a new RFID/NFC frontend IC (integrated circuit) for 13.56 MHz passive tag applications. The design of the frontend...

A new RFID/NFC (ISO 15693 standard) based inductively powered passive SoC (System on chip) for biomedical applications is presented here. The proposed SOC consists of an integrated 32 bit microcontroller, RFID/NFC frontend, sensor interface circuit, analog to digital converter and some peripherals such as timer, SPI interface and memory devices. An...

Telemetry systems enable researchers to continuously monitor physiological signals in unrestrained, freely moving small rodents. Drawbacks of common systems are limited operation time, the need to house the animals separately, and the necessity of a stable communication link. Furthermore, the costs of the typically proprietary telemetry systems red...

With the development of new integrated circuits to interface radio frequency identification protocols, inductive air interfaces have become more and more important. Near field communication is not only able to communicate, but also possible to transfer power wirelessly and to build up passive devices for logistical and medical applications. In this...

This paper presents the actual curriculum and goals of education in digital system design at the University of Applied Sciences, Offenburg, Germany. In a master course, following a seminar style, students are guided in their own development of a tiny microprocessor in 6 concluding tasks during no more than 10 weeks, using modern design tools. They...

Due to the demand of communication for medical implants with titanium housing, the introduced transceiver enables a simple and inexpensive, and power efficient solution with optimized modulation for high data rates at low frequency transmission.

Based on common RFID technology the University of Applied Sciences Offenburg is developing a new bio-telemetrical system called μTrans. Semi-passive RF transponders implanted in small animals measure ECG, pressure, temperature, oxygen saturation and activity. Using modern cloud technology, it is possible to build up a sensor network of a nearly unl...

In this paper, a complete passive transponder device has been discussed which is meant to monitor leakage in silicone breast implants. The passive tag operates in the HF frequency range of 13.56MHz using RFID ISO 15693 standard. The complete system consists of the transponder, reader and a PC. This paper focusses on the development of such a state...

Remote measurement of the physiology, so-called biotelemetry, is a key technology in the modern veterinary medicine. The usage of wireless implants has less impact on the behavior of animals than manual measurement methods and cause less disturbance than wired devices. But, common biotelemetry still uses proprietary communication and power concepts...

The idea behind the ThermoTag is the need to develop a complete passive tag with a simple circuit for measuring temperature. This paper focuses on the development of the tag which includes the proper designing of the antenna, which is very important for the passive development and also the measuring principle and the technique used for measurement....

The Institute of Applied Research Offenburg is working in the field of autonomous data loggers since many years. In collaboration with industry, a new RFID based active sensor data logger for continuous recording of temperature has been developed and is now manufactured in mass production. Compared to existing systems, an unusual large data memory...

This paper presents an enhancement on QPSK modulation technique for near field communication (NFC). The enhanced modulation is based on continuous-phase QPSK with Gaussian filtering during switch from one phase to the other. Signal processing is done digitally with minimum external discrete components for air interface. The telemetry system can be...

There are some existing Java benchmarks, application benchmarks as well as micro benchmarks or mixture both of them, such as: Java Grande, Spec98, CaffeMark, HBech, etc. But none of them deal with behaviors of multi tasks operating systems. As a result, the achieved outputs are not satisfied for performance evaluation engineers. Behaviors of multi...

A new approach of continuous phase QPSK Band-Pass modulation technique is being developed as enhancement to the QPSK modulation scheme for inductive data transmission (NFC). The modulation is based on Gaussian filtering of the phase transition from one state to the other rather than discontinuity in phase shift. The carrier is based on low frequenc...

A new miniaturized capsule with 32bit processor and bidirectional communication system is being developed for multitask application. The capsule is designed to be a platform for medical assistant application inside the body. The processor core SIRIUS has been developed, simulated, synthesized to a netlist and verified. The designed telemetry unit i...

We present an abiotically catalyzed glucose fuel cell and demonstrate its application as energy harvesting power source for a cardiac pacemaker. This is enabled by an optimized DC-DC converter operating at 40% conversion efficiency, which surpasses commercial low-power DC-DC converters. The required fuel cell surface area can thus be reduced from ~...

Electronic pills, smart capsules or miniaturized microsystems swallowed by human beings or animals for various biomedical and diagnostic applications are growing rapidly in the last years. This paper searched out the important existing electronic pills in the market and prototypes in research centers. Further objective of this research is to develo...

A new, small, and optimized for low power processor core named SIRIUS has been developed, simulated, synthesized to a netlist and verified. From this netlist, containing only primitives like gates and flip-flops, a mapping to an ASIC - or FPGA technology can easily be done with existing synthesizer tools, allowing very complex SOC designs with seve...

In a student project at the Fachhochschule Offenburg, the design of a small CISC-processor-kernel was created in a top-down design style using extensive VHDL and logic-synthesis. Starting from only a simple architecture idea, a complete design, tailored to the requirements of small applications, was done in only four months. The kernel has a 16 bit...

A new electronic capsule with bidirectional communication system is being developed for multi-task app lication. The capsule is designed to be a platform for medica l assistant application inside the body. The design ed telemetry unit is a synchronous bidirectional commu nication block using continuous phase DQPSK of 115 kHz low carrier frequency f...

A platform of an electronic capsule is being developed for multi-task medical assistant application. It includes a near field telemetry unit for bidirectional communication system of 115 KHz low carrier frequency for inductive data transmission suited for human body energy transfer. The system triggers an actuator for drug delivery in various time...

"March 30, 2001." Thesis (M.S., Information and Computer Science)--University of California, Irvine, 2001. Includes bibliographical references (leaf 48).