scholarly journals Hybrid-Integrated Series-to-Parallel Converters for Gigabit Rates

1977 ◽  
Vol 4 (2) ◽  
pp. 57-62 ◽  
Author(s):  
G. Hanke

The generation and processing of data signal sequences in the gigabit range make high demands on circuitry and technology. For this high-speed thick-film switching circuits have proved successful. With a suitable circuitry, which is tailored to both the requirements of the subnanosecond range and the conditions of the thick-film technique, it is possible to solve many problems connected with the generation and processing of data signals in the gigabit range.The conventional method of series-to-parallel conversion with shift registers can, however, not be applied at justifiable costs with the present-day components. Therefore signal processing at the receiving end by bit error rate measuring equipment at bit rates from 640 Mbit/s up to 1,28 Gbit/s is used to demonstrate hybrid-integrated thick-film circuits which, in connection with coaxial and strip lines, allow the series-to-parallel conversion of high bit rates.The principle applied here uses lines as storing elements and high speed gates as switches. By supplying the data signal as well as the shift and sampling clocks in a serial mode, it is possible to obtain a geometrically linear arrangement of the thick-film circuits so that problems of clock supply and differing signal delays can be excluded. The combination of a few extremely high-speed thick-film circuits with commercial monolithic circuits allows series-to-parallel conversions to be performed in a simple, reliable and flexible way and in any conversion ratio.

Author(s):  
A. J. Gannon ◽  
G. V. Hobson ◽  
R. P. Shreeve ◽  
I. J. Villescas

High-speed pressure measurements of a transonic compressor rotor-stator stage and rotor-only configuration during stall and surge are presented. Rotational speed data showed the difference between the rotor-only case and rotor-stator stage. The rotor-only case stalled and remained stalled until the control throttle was opened. In the rotor-stator stage the compressor surged entering a cyclical stalling and then un-stalling pattern. An array of pressure probes was mounted in the case wall over the rotor for both configurations of the machine. The fast response probes were sampled at 196 608 Hz as the rotor was driven into stall. Inspection of the raw data signal allowed the size and speed of the stall cell during its growth to be investigated. Post-processing of the simultaneous signals of the casing pressure showed the development of the stall cell from the point of inception and allowed the structure of the stall cell to be viewed.


1986 ◽  
Vol 3 (1) ◽  
pp. 15-17
Author(s):  
A.J. Marriage ◽  
B. McIntosh
Keyword(s):  

1989 ◽  
Vol 7 (6) ◽  
pp. 908-910 ◽  
Author(s):  
J.J. Veselka ◽  
D.A. Herr ◽  
T.O. Murphy ◽  
L.L. Buhl ◽  
S.K. Korotky

1983 ◽  
Vol 11 (1) ◽  
pp. 1-20 ◽  
Author(s):  
Janusz J. Gondek ◽  
Marek A. Wójcicki ◽  
Jan Cąber

The realisation of microwave integrated circuits consisting of numerous elements and components, both passive and active, takes place in steps. Initially, experimental constituent elements are designed and constructed, and only after it is found that they satisfy the operating conditions, can they be integrated into a sub-system. As a result of this we obtain complicated Microwave Integrated Circuits (MICs). Initially however one has to construct basic MIC elements such as: resonators, filters, couplings, Y branch joints, circulators, etc. During research over several years carried out at the Microelectronics Department, Institute of Electronics, of the Mining and Metallurgical University of Kraków and devoted to the application of thick-film technology to MIC, the authors have devised and constructed several microwave elements using strip-lines and this paper reports of the results of their studies.Pastes produced by DU PONT/USA were used. New mathematical models for designing thick-film microwave elements have been elaborated using computer techniques. These programmes have differed from analogous ones for MIC realized by thin-film technology can be adapted, after certain modifications, to the realisation of MIC. The authors have introduced new technological operations, not used so far, to the technological process. This has made possible the production of thick-film microwave elements with parameters comparable to those obtained in thin-film technology.


2007 ◽  
Vol 101 (9) ◽  
pp. 09K525 ◽  
Author(s):  
M. Nakano ◽  
H. Takeda ◽  
S. Sato ◽  
T. Yanai ◽  
F. Yamashita ◽  
...  

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