Schwarz, Ulrich; Helbig, Marko; Sachs, Jürgen; Seifert, Frank; Stephan, Ralf; Thiel, Florian; Hein, Matthias A.
Physically small and adjustable double-ridged horn antenna for biomedical UWB radar applications. - In: IEEE International Conference on Ultra-Wideband, 2008, ISBN 978-1-4244-2216-6, (2008), S. 5-8
http://dx.doi.org/10.1109/ICUWB.2008.4653272
Physically small and adjustable double-ridged horn antenna for biomedical UWB radar applications. - In: IEEE International Conference on Ultra-Wideband, 2008, ISBN 978-1-4244-2216-6, (2008), S. 5-8
http://dx.doi.org/10.1109/ICUWB.2008.4653272
S¸engül, Metin; Yarman, Siddik B.; Volmer, Christian; Hein, Matthias
Design of distributed-element RF filters via reflectance data modeling. - In: International journal of electronics and communications, ISSN 1618-0399, Bd. 62 (2008), 7, S. 483-489
http://dx.doi.org/10.1016/j.aeue.2007.05.009
Design of distributed-element RF filters via reflectance data modeling. - In: International journal of electronics and communications, ISSN 1618-0399, Bd. 62 (2008), 7, S. 483-489
http://dx.doi.org/10.1016/j.aeue.2007.05.009
Serebryakova, Elena;
Blau, Kurt; Hein, Matthias
Miniaturisation of combline filters for switched-mode power amplifier systems. - In: Advances in radio science, ISSN 1684-9973, Bd. 6 (2008), S. 125-127
http://dx.doi.org/10.5194/ars-6-125-2008
Miniaturisation of combline filters for switched-mode power amplifier systems. - In: Advances in radio science, ISSN 1684-9973, Bd. 6 (2008), S. 125-127
http://dx.doi.org/10.5194/ars-6-125-2008
Volmer, Christian; Weber, Jörn; Stephan, Ralf; Blau, Kurt; Hein, Matthias A.
An eigen-analysis of compact antenna arrays and its application to port decoupling. - In: IEEE transactions on antennas and propagation, ISSN 1558-2221, Bd. 56 (2008), 2, S. 360-370
http://dx.doi.org/10.1109/TAP.2007.915450
An eigen-analysis of compact antenna arrays and its application to port decoupling. - In: IEEE transactions on antennas and propagation, ISSN 1558-2221, Bd. 56 (2008), 2, S. 360-370
http://dx.doi.org/10.1109/TAP.2007.915450
Niebelschütz, Florentina; Cimalla, Volker; Tonisch, Katja; Haupt, Christian; Brückner, Klemens; Stephan, Ralf; Hein, Matthias; Ambacher, Oliver
AlGaN/GaN-based MEMS with two-dimensional electron gas for novel sensor applications. - In: Physica status solidi, ISSN 1610-1642, Bd. 5 (2008), 6, S. 1914-1916
http://dx.doi.org/10.1002/pssc.200778424
AlGaN/GaN-based MEMS with two-dimensional electron gas for novel sensor applications. - In: Physica status solidi, ISSN 1610-1642, Bd. 5 (2008), 6, S. 1914-1916
http://dx.doi.org/10.1002/pssc.200778424
Cimalla, Volker;
Röhlig, Claus-Christian; Pezoldt, Jörg; Niebelschütz, Merten; Ambacher, Oliver; Brückner, Klemens; Hein, Matthias; Weber, Jochen; Milenkovic, Srdjan; Smith, Andrew Jonathan; Hassel, Achim Walter
Nanomechanics of single crystalline tungsten nanowires. - In: Journal of nanomaterials, ISSN 1687-4129, Bd. 2008 (2008), 638947, S. 1-9
https://doi.org/10.1155/2008/638947
Nanomechanics of single crystalline tungsten nanowires. - In: Journal of nanomaterials, ISSN 1687-4129, Bd. 2008 (2008), 638947, S. 1-9
https://doi.org/10.1155/2008/638947
Humbla, Stefan; Drüe, Karl-Heinz; Stephan, Ralf; Stöpel, Dirk; Trabert, Johannes F.; Vogt, Gabor; Hein, Matthias A.
Qualification of a compact Ka-band switch matrix for on-orbit-verification. - In: GeMiC 2008, (2008), S. 454-457
Qualification of a compact Ka-band switch matrix for on-orbit-verification. - In: GeMiC 2008, (2008), S. 454-457
Schühler, Mario; Wansch, Rainer; Hein, Matthias
A design formulation of a periodic high-impedance surface for a miniaturised antenna array. - In: Metamaterials 2007, (2007), S. 503-506
A design formulation of a periodic high-impedance surface for a miniaturised antenna array. - In: Metamaterials 2007, (2007), S. 503-506
The focus of our work is the miniaturisation of a dipole antenna array by two complementary means. On the one hand, we want to place the antennas close above a high-impedance surface. On the other hand, we want to reduce the coupling between the antennas so that the elements can be placed at separations less than [lambda]/2. We derive a formulation to design analytically a high-impedance surface consisting of a periodic structure, which displays a surface wave band gap for a range of wavelengths much larger than the periodicity of the structure. For frequencies below the band gap, the structure supports backward waves, above the band gap forward waves are supported. Our considerations are verified by measurements.
Müller, Jens; Perrone, Ruben; Drüe, Karl-Heinz; Stephan, Ralf; Trabert, Johannes F.; Hein, Matthias; Pohlner, Jürgen; Schwanke, Dieter; Reppe, Günter
Comparison of high resolution patterning technologies for LTCC microwave circuits. - In: Proceedings and exhibitor presentations, (2007), insges. 6 S.
Comparison of high resolution patterning technologies for LTCC microwave circuits. - In: Proceedings and exhibitor presentations, (2007), insges. 6 S.
Niebelschütz, Florentina; Cimalla, Volker; Brückner, Klemens; Stephan, Ralf; Tonisch, Katja; Hein, Matthias A.; Ambacher, Oliver
Sensing applications of micro- and nanoelectromechanical resonators. - In: Proceedings of the Institution of Mechanical Engineers, ISSN 2041-3092, Bd. 221 (2007), 2, S. 59-65
http://dx.doi.org/10.1243/17403499JNN100
Sensing applications of micro- and nanoelectromechanical resonators. - In: Proceedings of the Institution of Mechanical Engineers, ISSN 2041-3092, Bd. 221 (2007), 2, S. 59-65
http://dx.doi.org/10.1243/17403499JNN100