Ferdinand-Braun-Institut für Höchstfrequenztechnik
Ferdinand-Braun-Institut für Höchstfrequenztechnik
Gustav-Kirchhoff-Str. 4
12489 Berlin
Germany
Fon.: + 49 30 6392 2643
Fax: + 49 30 6392 2642
http://www.fbh-berlin.de
Contact person:
Dr.-Ing. Roland Gesche
roland.gesche@fbh-berlin.de
We research cutting-edge technologies in the fields of microwave technology and optoelectronics. For customers in industry and science we provide high-frequency devices and circuits for communication and sensor technology as well as high-power diode lasers for materials processing, laser technology, medical technology and high precision metrology.
As a competence centre for III/V-compound semiconductors we operate industry-compatible and flexible clean room laboratories with 2"-4" gas phase epitaxy units and a 2"-4" process line.
Die fünf Geschäftsbereiche des Ferdinand-Braun-Instituts organisieren die Forschungsarbeiten des FBH anwendungs- und kundenorientiert: Sie sind Ansprechpartner für Kunden aus Forschung und Industrie bei der Entwicklung und Fertigung von Bauelementen und Systemen. Bei ihren Arbeiten greifen die Geschäftsbereiche auf das Know-how und die Ressourcen zurück, die von den vier fachspezifischen Abteilungen bereitgehalten werden. Neben den vier fachorientierten Geschäftsbereichen organisiert der Bereich Netzwerke die Aktivitäten des FBH im Forschungstransfer, in der Aus-, Fort- und Weiterbildung sowie zur Vernetzung im Hochtechnologiebereich.
Microplasmas
Microvave plasma generation, particularly in the 2.45 GHz ISM band, enables a variety of new applications in medicine, biology, semiconductor industry and industrial surface engineering. The field of low-pressure plasma processing, which is widely used in industry, is permanently demanding for refinements and improvements in terms of quality, efficiency and cost. On the other hand, the new emerging field of atmospheric microplasmas is gaining more and more attention due to its high potential in creating new plasma applications as well as the chance to transfer low-pressure plasma applications to much more cost-effective atmospheric processes. In both fields, application of microwave frequencies today is limited by shortcomings of the available magnetron power-sources and by the problems associated with the microwave transmission from the source into the plasma. There is a need for an integrated semiconductor-based power source – electrode systems that are reliable and can be easily integrated in application systems. Particularly the high potential of efficient high-density atmospheric microplasma sources can be addressed only if small integrated sources become available. Thus, this field represents an interesting application and extension of the FBH activities on microwave III-V power components.
Microwave Measurements
For characterization of devices and circuits as well as for model verification, FBH relies on high-level measurement equipment and a dedicated group. The following measurements are covered:
- S parameter measurements 20 kHz to 110 GHz
- Noise characterization including low-frequency noise
- Phase-noise characterisation
- Load-pull measurements of high-power transistors (2-10 GHz, 10+ W)
- Thermal impedance measurements
These procedures are routinely performed within the current research activities. The FBH expertise, however, is also available for external partners and customers in the framework of projects and contracts (consulting, measurement).
