Receive antenna impact on spatio-temporal availability in satellite-to-indoor broadcasting (2008)
Milojevic, M., Del Galdo, G., Song, N., Haardt, M., Heuberger, A.
Reduction of non-orthogonal interference in OFDM receivers by optimized windowing (2007)
Nickel, P., Gerstacker, W., Jonietz, C., Kilian, G., Heuberger, A., Koch, W.
For conventional orthogonal frequency-division multiplexing (OFDM) systems, the guard interval is disregarded in the receiver and rectangular shaped windows are used implicitly due to the discrete...
Channel modeling using time series - an efficient method for modeling slow fading effects (2007)
Eberlein, E., Heuberger, A., Keip, C.
Modelling of the slow fading effects is essential for systems with long interleaving or targeting high quality-of-service (QoS). Time series are an efficient method to model the slow fading effects...
Spatio-temporal availability in satellite-to-indoor broadcasting (2007)
Milojevic, M., Del Galdo, G., Song, N., Haardt, M., Heuberger, A.
This contribution studies the spatio-temporal availability of satellite links inside typical indoor environments. The spatio-temporal satellite-to-indoor channels are obtained by a 3D ray tracing...
Building blocks for wideband powerbank for shipboard HF communication systems (2006)
Laske, C., Ulbricht, G., Heuberger, A.
This paper describes a novel architecture for a wideband HF power amplifier for multi-carrier application, its target performance and in more detail the use of a vector phase shifter as a critical...
Experiments on capacity analysis for the land mobile satellite channel (2006)
Berioli, M., Ernst, H., Heuberger, A., Meyer, M., Blaya-Perez, A., Scalise, S.
Propagation measurements for the characterization of a satellite-to-indoor channel in L-band (2006)
Heyn, T., Wagner, C., Heuberger, A.
The satellite-to-indoor propagation channel in L-band has been measured and analyzed for several houses in Athens, Greece and Erlangen, Germany. The influence of a user on the reception (e.g....
Spatial availability in satellite-to-indoor broadcasting communications (2006)
Song, N., Del Galdo, G., Milojevic, M., Haardt, M., Heuberger, A.
Single carrier interference cancellation for digital radio mondiale (DRM) (2006)
Jonietz, C., Gerstacker, W.H., Nickel, P., Koch, W., Kilian, G., Heuberger, A.
We consider cancellation of a single carrier interferer for the Digital Radio Mondiale (DRM) system. The interferer is fully described by its frequency, amplitude, and phase. These parameters can be...
Reduction of Non-Orthogonal Interference in OFDM Receivers by Optimized Windowing (2006)
Jonietz, C., Gerstacker, W., Nickel, P., Koch, W., Kilian, G., Heuberger, A.
Comparison of physical layer interleaving with upper layer interleaving (2006)
Eberlein, E., Brandenstein, H., Heuberger, A., Ernst, H., Bertoli, M.
Eberlein, E., Breiling, M., Keip, C., Stadali, H., Heuberger, A.
DE 102006026895 B3 UPAB: 20071126 NOVELTY - The device has an interlacing device (10) changing a sequence of interlacing units to receive interlaced code words (CW1-CW3), where the interlacing device...
Untersuchungen zur Versorgungsqualität im mobilen Kanal in digitalen Satellitenrundfunknetzen (2005)
In Satellitenrundfunksystemen, die für den mobilen Empfang geeignet sind, werden in vielfältiger Weise Diversity-Verfahren wie zum Beispiel Raum-Diversity oder Empfangsorts-Diversity eingesetzt....
Empfaenger mit niedrigem Ruhestrom (2005)
Perthold, R., Heuberger, A., Gerhaeuser, H.
The receiver has an input for amplitude sampled signals, and a non-linear amplifier. There is a low pass filter feedback circuit between the output of the amplifier and the input, for feedback of a...
Chipset development for digital radio mondiale (DRM) (2005)
Mayer, F., Schlicht, M., Heuberger, A., Meltzer, S.
This work presents a hardware intellectual property (IP) module that performs demodulation and decoding of the Digital Radio Mondiale (DRM) signal. The IP has completely been developed in SystemC,...
Hupp, J., Rebhan, K., Noether, F., Tittel, M., Stoermer, U., Kleinhenz, T., ...
WO 200141330 A UPAB: 20010822 NOVELTY - The DECT terminal has a number of transmit/receive antennas for communicating with a base station, a device (62) for determining the quality of a...
Basisstation, Mobilteil und Kommunikationsnetz (2002)
Rebhan, K., Kleinhenz, T., Hupp, J., Heuberger, A., Gerhaeuser, H.
DE 20020973 U UPAB: 20010615 NOVELTY - The base station (10) has a transceiver (12) for communication with a mobile part, using a Hopping sequence out of several such sequences. One sequence has a...
Badri, S., Eberlein, E., Buchholz, S., Lipp, S., Heuberger, A., Gerhaeuser, H.
DE 19837426 A UPAB: 20000412 NOVELTY - A first transmission symbol is generated from an information symbol and a second transmission symbol is generated from the same information symbol, with the two...
Verfahren und Vorrichtung zur Unterdrueckung einer vorbestimmten Sendung (2000)
Wagner, T., Heuberger, A., Plankenbuehler, R., Popp, H., Gerhaeuser, H., Dietz, M.
EP 993188 A UPAB: 20000624 NOVELTY - A received TV or radio program is stored in a buffer (12) without being transmitted in response to a control signal (16) identifying the scheduled broadcast. The...
Heuberger, A., Eberlein, E., Buchta, R., Gerhaeuser, H.
EP 1041397 A UPAB: 20001106 NOVELTY - The method has a coded signal sampled and the sample values stored, with a decoded version of the coded signal compared with a given information word, for...
Zeller, J., Spinnler, W., Gerhaeuser, H., Korte, O., Caldenhoven, F., Haist, M., ...
The method involves transmitting data records in the form of data packets from a transmitter to a receiver without feedback by the receiver regarding error occurrences in the transferred data...
Heuberger, A., Gerhaeuser, H., Perthold, R., Eberlein, E., Plankenbuehler, R., Schott, H., ...
The method involves transforming the audio signals to a spectral range and determining a masking threshold (W( omega )) for the audio signals. The method also provides pseudorandom noise signals and...
Kontaktieren von hochpoligen SMDs mit anisotrop leitfähigen Klebstoffen (1998)
Gesang, T., Schäfer, H., Bornholdt, O., Harder, T., Heuberger, A.
Kontaktieren von hochpoligen SMDs mit anisotrop leitfähigen Klebstoffen (1998)
Gesang, T., Schäfer, H., Bornholdt, O., Harder, T., Heuberger, A.
Elektrisch leitfähige Verbindungen werden zunehmend klebtechnisch ausgeführt. Hier wird prinzipiell zwischen drei Verfahren unterschie den: Isotrop leitfähige Klebtechnik mit leitfähigen...
Contacting of high pin-count SMDs with conducting anisotropic adhesives (1998)
Gesang, T., Schäfer, H., Bornholdt, O., Harder, T., Heuberger, A.
Integrated RF transmitter based on SAW oscillator (1997)
For the use in small, low power and low cost RF transmitters an oscillator ASIC in 1.2 my BICMOS technology operating at 433 MHz has been built. The ring oscillator topology with a phase shifter in...
Recent contributions to the development of non-optical lithography (1996)
Lithography of quarter micron devices is definitely in the domain of optical lithography, however, for the 0.18 mu m 1 Gbit devices the lithography tools have not been decided yet. There is the...
Pflaum, A., Heuberger, A., Kemmerling, M.
Die Fraunhofer Gesellschaft hat 1995 eine Studie zum Thema "Drahtlose Kommunikation in der Produktionstechnik" durchgeführt. Dieser Artikel gibt Auszüge aus dieser Studie wieder und behandelt den...
Der Blick über den Zaun - weitere digitale Rundfunksysteme (1996)
Die Diskussion über digitalen terrestrischen Rundfunk (DAB - Digital Audio Broadcasting) wurde in den letzten Jahren sehr stark von dem System nach dem EU 147 Standard geprägt. In der Tat ist...
Mit einem einen Gleichanteil aufweisenden Modulationssignal modulierbare PLL-Schaltung (1995)
Heuberger, A., Wallrapp, L., Seitzer, D.
A PLL circuit which can be modulated by a modulation circuit comprising a DC component has a voltage- controlled main oscillator, a loop divider, a phase comparator and a loop filter. The comparison...
Field strength monitor receiver for remote control application (1995)
Perthold, R., Heuberger, A., Wallrapp, L.
A typical industrial remote control system is a narrow band FM FDMA system. A reverse channel from the controlled machine back to the operator is usually not provided. The transmitter therefore has...
Telemetriesendersystem. (1994)
Heuberger, A., Geiselbrecht, S., Seitzer, D.
A telemetry transmitter system contains a transmitter unit and a microprocessor. In order to avoid the mass storage of telemetry transmitters, the telemetry transmitter system according to the...
Vorrichtung zur drahtlosen Erfassung der Reaktion einer Vielzahl von Personen (1994)
Heuberger, A., Gloeckler, R., Schott, H., Seitzer, D.
A device for the wireless detection of the reaction of several persons comprises an inquiry unit and a large number of terminals. The control electronic circuitry of each terminal permits the input...
A SPICE model for passive diode ring mixers (1994)
Perthold, R., Geiselbrecht, S., Heuberger, A.
This article describes a macromodel for passive diode ring mixers for frequency range up to 1 GHz. The models are usable for all commercial harmonic balance simulators as well as for the standard...
Radio-frequency microtools for particle and live cell manipulation (1994)
Fuhr, G., Müller, T., Schnelle, T., Hagedorn, R., Voigt, A., Fiedler, S., ...
Single particles can be manipulated by applying high frequencies to ultramicro electrode arrays fabricated on planar structures. Heat production can be reduced to the extent that intense electric...
IBM PC-based receiver for meterological telemetry (1994)
Perthold, R., Heuberger, A., Wallrapp, L., Thieme, J.
For the use in a meteorological measurement system (radiosonde system) an IBM PC based telemetry receiver has been realized. It provides coverage of 398 to 410 MHz and 3 different IF bandwidths. Two...
Flexible UHF data transmission system with broad tuning range (1994)
Lenhard, T., Heuberger, A., Perthold, R., Wallrapp, L., Heckl, M.
For the use in wireless applications a new versatile data transmission system (receiver / transmitter) has been developed. Typical applications are telecontrol / telecommand links or wireless modems....
Seitzer, D., Heuberger, A., Brockdorff, T.
In a process for the localization of moving objects based of long-wave, mutual, phase-locked signals, these signals are received, converted, modulated onto a carrier, transmitted, received,...
Microsystem technology introduces a new way of system integration including microelectronics, sensors and actuators. The basis for that is provided by using the integrated circuit fabrication methods...
Microsystem technology introduces a new way of system integration including microelectronics, sensors and actuators. The basis for that is provided by using the integrated circuit fabrication methods...
Performance of the new digital radiosonde system DFM 90 (1992)
Heuberger, A., Wallrapp, L., Geiselbrecht, S., Ulbricht, G., Couronne, S.
The new DFM Digital Flexible Modular radiosonde system has been developed for the use in operational upper air soundings as well as in scientific applications. The radiosonde provides a standard PTU...
Heuberger, A., Geiselbrecht, S., Seitzer, D.
A telemetry transmitter for the digital transmission of meteorological measurement signals to a receiver station has a signal processing device and a transmit amplifying device. In order to reduce...
Heuberger, A., Fallmann, W., Paschke, F., Stangl, G., Chalupka, A., ...
Experiments performed with a research type Ion Projector show electronic alignment in X, Y, and rotation with 0.1 Mym accuracy for 2 mm*2 mm chip fields obtained at 9* ionoptical reduction. The fine...
Seidel, H., Csepregi, L., Heuberger, A., Baumgärtel, H.
The anisotropic etching behaviour of single-crystal silicon and the behaviour of SiO2 and Si3N4 in an ethylenediamine-based solution as well as in aqueous KOH, NaOH, and LiOH were studied. The...
Heuberger, A., Riethmüller, W., Benecke, W.
Der Bedarf an mikroelektronik-kompatiblen Sensoren und Aktuatoren wird immer deutlicher. Ihr Vorteil ist, daß sie durch die monolithische Integration von Elektronik und Mechanik über lokale...
Multi electron beam lithography - fabrication of a control unit (1989)
Schnakenberg, U., Wallendszus, V., Heuberger, A., Lischke, B., Benecke, W., Müller, K.P.
Electron beam lithography is limited by the extremely low throughput of currently working machines. This paper describes a multiple beam forming unit for a new line printer type lithography system...
Multi-beam concepts for nanometer devices (1989)
Lischke, B., Brunner, M., Herrmann, K.H., Heuberger, A., Knapek, E., Schnakenberg, U., ...
To overcome the throughput limitations in electron beam nanolithography, a multi beam system is proposed. Theoretical considerations show that this e-beam comb-probe printer with 1024 probes will be...
An e-beam comb-probe printer for nanolithography (1989)
Heuberger, A., Lischke, B., Christaller, G., Herrmann, K.H., Knapek, E., Kniekamp, H., ...
We propose a printer-type e-beam system to replace writing pattern generators for obtaining throughout improvements in nanolithography. The e-beam comb-probe printer with 1024 probes should be...
X-ray lithography with wavelengths between 0.2 and 5 nm provides both high-structural resolution as good as 0.1 My m and a wide scope of advantages for the application in circuit production. Examples...
Csepregi, L., Heuberger, A., Müller, K.P., Chalupka, A., Hammel, E., Löschner, H., ...
An ion projection lithography system was equipped with an open stencil mask manufactured by applying silicon technology. By exposing poly(methylmethacrylate) and SiO2 to He+ions, the pattern,...
Optically excited mechanical vibrations in micromachined silicon cantilever structures (1987)
Heuberger, A., Schnakenberg, U., Wölfelschneider, H., Knoll, G., Ramakrishnan, S., Höfflin, H., ...
Mechanical vibrations in micromachined silicon cantilever structures with typical dimensions of 1000x80x5 micro cubicmeters by the local absorption of pulsed laser light at 780 nm or LED light at 830...
Open silicon stencil masks for demagnifying ion projection (1987)
Heuberger, A., Csepregi, L., Müller, K.P.
The demagnifying ion projection, a lithography technique for patterns in the sub-mym-range, requires open stencil masks. A process scheme for these masks is proposed which involves CMOS technology...
Micromechanical silicon actuators based on thermal expansion effects (1987)
Heuberger, A., Schnakenberg, U., Benecke, W., Riethmüller, W.
A new type of micromachined silicon actuator has been developed, based on the so-called bimetallic effect. The basic element of the actuator is a cantilever consisting of a silicon-metal sandwich...
Chlebek, J., Heuberger, A., Betz, H.
Absorbed X-ray photons generate electrons which influence the resolution in X-ray lithography. In this paper electrons released from the mask membrane, the resist and the sublayer are characterized...
X-ray lithography with wavelengths between 0.2 nm and 5 nm provides both high structural resolution as good as 0.1 micrometer and a wide scope of advantages for the application in circuit production....
Betz, H., Heinrich, K., Heuberger, A., Oertel, H.
Resolution in x-ray lithography is influenced mainly by the exposure geometry, the resist's behavior, and by the Fresnel diffraction as well. The range of photoelectrons created by the soft x-rays,...
Influence of thin film thickness variations on pattern fidelity of x-ray masks (1986)
Betz, H., Heuberger, A., Hersener, J., Bruenger, W.H.
In x-ray mask fabrication with absorber structuring on unthinned wafers it is important that all layers which cover the mask membrane, are homogeneous in thickness and composition. It is demonstrated...
Influence of sputter effects on the resolution in X-ray mask repair (1986)
Betz, H., Heuberger, A., Economou, N.P., Shaver, D.C.
When Focused-Ion-Beam Milling is used for repairing opaque defects on X-ray masks, the specific sputter effects such as redeposition of the sputtered material and reflection of the primary ions...
X-ray lithography with wavelengths between 0.2 and 2 nm provides a structural resolution as good as 0.1 micrometer under optimized conditions even in the case of high proximity gaps of 50 micrometers...
Synchrotron lithography - the way to sub-micron features with single layer resist (1985)
Soft x-ray radiation is affected neither by scattering in the resist nor by reflection from the substrate surface, so that a one-layer resist system can be maintained even in the sub-micron range....
A frequency-selective, piezoresistive silicon vibration sensor (1985)
Csepregi, L., Heuberger, A., Kuehl, K., Seidel, H., Benecke, W.
Application of the simulator "XMAS" on specific problems in sub-half micron lithography (1985)
Oertel, H., Betz, H., Heuberger, A.
The program XMAS, which allows the simulation of 3-D resist profiles in x-ray lithography has been used to evaluate the ultimate resolution capability and the replication of defects of this...
Technologie fuer immer kleinere Strukturen (1984)
Um die feinen Strukturen von integrierten Schaltkreisen in der Grossserie wirtschaftlich zu erzeugen, verwendet man heute durchwegs Lithographieverfahren. Die einfache Schattenprojektion im...
Betz, H., Heuberger, A., Bruenger, W.H., Mueller, K.P.
Mask fabrication is a key technology for x-ray lithography which could limit the size of future step and repeat fields used for x-ray exposure. This paper deals with distortions induced by single...
Application of diazo-type resists in synchrotron lithography (1984)
Betz, H., Heuberger, A., Pongratz, S.
The paper deals with an experimental evaluation of the characteristics of the Diazo-type resists (AZ 1450 J, Kodak 820) under x-ray illumination. The goal is the application of these resists in...
Properties of crosslinked positiv-acting X-ray, resists, fabricated on the basis of poly (1983)
Asmussen, F., Betz, H., Chen, B.T., Heuberger, A., Pongratz, S., Sotobayashi, H., ...
E-beam two-coordinate measuring tool for high precision metrology in micro-lithographie (1983)
Betz, H., Heuberger, A., Somers, J.M., Bruenger, W.H.
Design criteria and performance data for the E-Beam Measuring Tool (EBMT-5; Cambridge Instruments Ltd.) are presented. Repeatability tests give positional accuracies of 3 sigma
Becker, E.W., Ehrfeld, W., Muenchmeyer, D., Betz, H., Heuberger, A., Pongratz, S., ...
Naturwissenschaften, 69(1982) S.520-23