Schulz (Georg-Michael). Negativität in der Dichtung Paul Celans

Kudszus W. G. Schulz (Georg-Michael). Negativität in der Dichtung Paul Celans. In: Revue belge de philologie et d'histoire, tome 61, fasc. 3, 1983. Langues et littératures modernes — Moderne taal- en letterkunde. pp. 663-664

Schulz (Georg-Michael). Negativität in der Dichtung Paul Celans

Kudszus W. G. Schulz (Georg-Michael). Negativität in der Dichtung Paul Celans. In: Revue belge de philologie et d'histoire, tome 61, fasc. 3, 1983. Langues et littératures modernes — Moderne taal- en letterkunde. pp. 663-664

Trends and challenges in coplanar millimeter-wave integrated circuit design

Despite the advantages of coplanar waveguide technology for high performance and low cost MMIC applications, its possibilities are still not thoroughly exploited for commercial applications. This paper presents an overview of trends and latest achievements in millimeter-wave coplanar integrated circuit design, such as modeling aspects, mounting techniques, and system applications. Coplanar circuit technology has shown its potential to be competitive with microstrip by recent solutions of the previously hindering technical and technological problems, and the realization of circuits for high performance millimeter wave applications

A 94GHz HEMT-oscillator using high order subharmonic synchronization

A new approach for the stabilization of millimeterwave solid state oscillators using high order subharmonic injection locking is presented. A 94 GHz VCO MMIC was developed, consisting of the oscillator circuit and an integrated harmonic generator, based on GaAs PHEMT technology. The oscillator can be stabilized by injection power levels of -45 dBm at 94 GHz using the reflection type injection locking technique, allowing reference frequencies as low as the 15th to 21st subharmonic as the input for the harmonic generator. Additionally, an injection locked PLL was developed, which improves the locking range from 30 MHz to 1 GHz, using the 21st subharmonic as a reference signal

A 94 GHz single-chip FMCW radar module for commercial sensor applications

A single-chip 94 GHz frequency modulated continuous wave (FMCW) radar module has been developed for high resolution sensoring under adverse conditions and environments. The monolithic microwave integrated circuit (MMIC) includes a varactor tuned VCO with injection port, very compact transmit and receive amplifiers and a single-ended resistive mixer. To enable bidirectional operation of a single transmit-receive antenna a combination of a Wilkinson divider and a Lange coupler was integrated. The circuit features coplanar technology and cascode HEMTs for compact size and low cost. These techniques result in a particularly small over-all chip-size of only 2 x 3 mm2. The packaged 94 GHz FMCW radar sensor achieved a tuning range of 6 GHz, an output power of 1mW and a conversion loss of 5 dB. The RF performance of the radar module was successfully verified by real-time monitoring the time flow of a gas-assisted injection molding process

A coplanar 94 GHz low-noise amplifier MMIC using 0.07 µm metamorphic cascode HEMTs

A 94 GHz low-noise amplifier MMIC (LNA) has been developed, based on a coplanar technology utilizing 0.07 µm depletion type metamorphic HEMTs (MHEMTs). The realized single-stage cascode LNA achieved a small-signal gain of more than 12 dB and an average noise figure of 2.3 dB over the bandwidth from 80 to 100 GHz. With an indium content of 80 % in the channel a 2 x 30 µm MHEMT device has shown a transit frequency (ft) of 290 GHz, an extrinsic transconductance of 1450 mS/mm and a maximum stable gain (MSG) of 11 dB at 94 GHz. Using two HEMTs connected in cascode configuration the MSG could be increased to 22 dB. To stabilize the cascode device and to increase the bandwidth of the amplifier circuit a resistive feedback was integrated into the HEMT in common-gate configuration. Coplanar topology in combination with cascode transistors resulted in a chip-size of only 1x1mm2

Mobile Kommunikationssysteme. Monolithisch integrierte mmW-Schaltkreise fuer Verkehrsleit- und Informationssysteme Abschlussbericht

Available from TIB Hannover: F01B525+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman