P. Kosina, L. Hájková, J. Šandera, Tomas Symersky
{"title":"The capacitive sensor","authors":"P. Kosina, L. Hájková, J. Šandera, Tomas Symersky","doi":"10.1109/ISSE.2009.5207049","DOIUrl":"https://doi.org/10.1109/ISSE.2009.5207049","url":null,"abstract":"This paper is focused on a cavity in LTCC (Low Temperature Co-fired Ceramics), which is one of the methods used for creation of pressure sensor. The mechanical part is 3D structure in which there are integrated electrodes created by TFT (Thick Film Technology). One of them is fixed and the other one is on the deformation element. The zero value is defined by the size of the cavity. The sensor is constructive as a plate capacitor with a change in the distance of electrodes. The change of pressure is caused by the deformation and which consequently changes the capacitive. The quality of the sensor is influence by quality of the cavity. There are many problems with a deformation defect of the actuating element. The main aim is to create a cavity with a regular shape. It is very important for the solidity and good of sensitivity of the pressure sensor.","PeriodicalId":337429,"journal":{"name":"2009 32nd International Spring Seminar on Electronics Technology","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126584017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Sensorial characteristics of conductive polymers","authors":"J. Řeboun, A. Hamácek, T. Džugan, M. Kroupa","doi":"10.1109/ISSE.2009.5207063","DOIUrl":"https://doi.org/10.1109/ISSE.2009.5207063","url":null,"abstract":"This paper deals with the investigation of intrinsic conductive polymer PEDOT-PSS and development of vapour sensors. These sensors are based on the specific vapours influence on the electrical parameters. The designed sensors consist of glazed ceramic substrate with gold interdigital electrodes covered by a thin layer of conductive polymer. The insulation gap between electrodes was investigated in the range of 50 – 200 µm in order to achieve the maximal sensitivity. Temperature and humidity dependences of PEDOT-PSS layers were measured in the climatic chamber, influence of particular vapours on electrical parameters were measured in the special gas chamber. Except for temperature, humidity and vapour sensitivity, long term stability was also studied.","PeriodicalId":337429,"journal":{"name":"2009 32nd International Spring Seminar on Electronics Technology","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126703382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Durackova, Mário Krajmer, J. Racko, J. Breza, M. Kadlecíková
{"title":"Some simulated properties of the pseudostructure of a floating gate MOS transistor","authors":"D. Durackova, Mário Krajmer, J. Racko, J. Breza, M. Kadlecíková","doi":"10.1109/ISSE.2009.5207000","DOIUrl":"https://doi.org/10.1109/ISSE.2009.5207000","url":null,"abstract":"The floating gate technology is widely used as a memory element in digital circuits and as a novel memory element in analogue technology. In this work we prepare the basis for on-chip implementation of a Cellular Neural Network (CNN). For this purpose we investigate the features of a pseudo-floating gate transistor introduced in [1]. After simulating the structure by T-CAD tool we designed a behavioural model in SPICE that could be implemented into CADENCE design tool.","PeriodicalId":337429,"journal":{"name":"2009 32nd International Spring Seminar on Electronics Technology","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128869859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A quasi real time simulator for Maximum Power Point Tracking algorithms","authors":"A. Rusu, D. Petreus, I. Ciocan, D. Moga","doi":"10.1109/ISSE.2009.5207007","DOIUrl":"https://doi.org/10.1109/ISSE.2009.5207007","url":null,"abstract":"Maximum Power Point Tracking (MPPT) is an electronic system that operates the photovoltaic modules in a manner that allows the modules to produce all the power they are capable of. The model functionality was tested and the results obtained were compared to those from the manufacturer datasheet. Different algorithms were implemented in C language using Keil software 8051 development tool, μVision. The maximization of the output power of the photovoltaic (PV) system is controlled through a 8051 microcontroller. The entire PV system was simulated using Proteus and can be a used to any MPPT algorithms.","PeriodicalId":337429,"journal":{"name":"2009 32nd International Spring Seminar on Electronics Technology","volume":"1239 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129216817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Robust ceramic capillary electrophoresis analysis device","authors":"G. Fercher, W. Smetana, M. Vellekoop","doi":"10.1109/ISSE.2009.5207045","DOIUrl":"https://doi.org/10.1109/ISSE.2009.5207045","url":null,"abstract":"Two of the main parameters characterizing the performance of an on-chip capillary electrophoresis (CE) separation are peak height and peak resolution. This contribution presents both computational and measurement results of a contactless conductivity detector produced in low temperature co-fired ceramics (LTCC) multilayer technology. Detection electrodes are placed just outside of the channel, avoiding direct contact with the liquid. This increases the robustness and life-time of the device. The higher material permittivity of the ceramics in comparison to glass or polymer substrates enables better coupling of the measurement signal into the microchannel and thus improved detection sensitivities. By using elektrokinetic injection of the samples into the microchannel, the peak resolution is significantly improved as is shown experimentally.","PeriodicalId":337429,"journal":{"name":"2009 32nd International Spring Seminar on Electronics Technology","volume":"172 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123008259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Modeling and simulation of an recognition system for digital modulated signals","authors":"D. Visan, M. Jurian, I. Lita, I. B. Cioc","doi":"10.1109/ISSE.2009.5206992","DOIUrl":"https://doi.org/10.1109/ISSE.2009.5206992","url":null,"abstract":"Automatic modulation type identification is needed in many applications. The recognition of the communication system for example is done by inspecting the received signal properties like modulation type, carrier frequency, baud rate and so on. In this paper we introduce a new AMR (Automatic Modulation Recognition) method based on time and spectral domain features of the received signal. A broad class of analog and digital modulations is considered. Baud rate and carrier frequency estimation is performed by existing methods. The proposed model was tested through simulations in LabVIEW software. Using a noisy input signal revealed that the signal to noise lower limit for the analogue and digital modulation classifier is approximately 10 dB.","PeriodicalId":337429,"journal":{"name":"2009 32nd International Spring Seminar on Electronics Technology","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133674081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Novel interdigitated transducer structures for biosensoric applications","authors":"A. Bonyár, H. Santha","doi":"10.1109/ISSE.2009.5206978","DOIUrl":"https://doi.org/10.1109/ISSE.2009.5206978","url":null,"abstract":"In this work we present novel interdigitated transducer (IDT) structures and their electrochemical characterization for DNA (deoxiribo-nucleic-acid) based biosensoric applications. The principle of the new structures is to maximize the so called “edge effect” of the electric field to gain faster material transfer and thus increase the performance of the biosensor. For the characterization of the gold thin film IDT structures we used electrochemical impedance spectroscopy (EIS) with three different electrode connecting regimes and single-stranded DNA monolayers. Experiments were performed to evaluate two aspects. A). The new IDT structures were evaluated based on the maximal possible signal that can be gained after hybridization of the ssDNA (single stranded) biofunctionalized electrodes and the target ssDNA chains. Results suggest that using the new electrode structures instead of the classical round shaped working electrodes is not entirely beneficial. B). In the other aspect of the experiments some electrode connecting regimes among the investigated three ones can be considered beneficial or disadvantageous in terms of sensitivity or reproducibility.","PeriodicalId":337429,"journal":{"name":"2009 32nd International Spring Seminar on Electronics Technology","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131540901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Svasta, I. Plotog, N. Codreanu, A. Vasile, G. Vărzaru, A. Marin
{"title":"Printed circuit boards with different material core assembling quality analysis based on 4 P Soldering Model","authors":"P. Svasta, I. Plotog, N. Codreanu, A. Vasile, G. Vărzaru, A. Marin","doi":"10.1109/ISSE.2009.5207053","DOIUrl":"https://doi.org/10.1109/ISSE.2009.5207053","url":null,"abstract":"The increasing demand for high integration with continuous decreasing dimensions, maintaining quality and lowering costs for electronic modules brought on the market new types of printed circuits boards (PCBs), having different material core. Taking into account only rigid PCBs, there are currently used metals (Al, Cu, brass), for applications requiring excellent thermal management (RF modules, power leds), or glass, for applications requiring high levels of cleanliness (medical apparatus), or specific polytetrafluoroethene (PTFE) materials for microwave applications (Arlon, Rogers). In the practice, the Electronics Manufacturing Services (EMS) companies become to have difficulties for assembling the PCBs with different core materials determined by high thermal capacity being hardly to adjust the Surface-mount technology (SMT) lines parameters. In this paper it is analyzed the influence of the PCB support over some of the parameters of 4P Soldering Model and the consequences on the quality of the soldering. There were used four types of boards with different types of pad finishes, same solder paste, same pin finishes and two different processes. The results are undeniably that PCB support material is very important for the statement of the thermal profile of the process.","PeriodicalId":337429,"journal":{"name":"2009 32nd International Spring Seminar on Electronics Technology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131343064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Technological and design limitations of bipolar power transistors","authors":"V. Strakoš","doi":"10.1109/ISSE.2009.5206928","DOIUrl":"https://doi.org/10.1109/ISSE.2009.5206928","url":null,"abstract":"The clarification of effects having negative impact on power transistor performance. The review of demands on parameters of modern bipolar power transistors and main limitations both technological and design are given. Some concepts are proposed for solving of these problems.","PeriodicalId":337429,"journal":{"name":"2009 32nd International Spring Seminar on Electronics Technology","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133258433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Klumbies, U. Partsch, A. Goldberg, S. Gebhardt, U. Keitel, H. Neubert
{"title":"Actuators to be integrated in Low Temperature Cofired Ceramics (LTCC) microfluidic systems","authors":"H. Klumbies, U. Partsch, A. Goldberg, S. Gebhardt, U. Keitel, H. Neubert","doi":"10.1109/ISSE.2009.5207068","DOIUrl":"https://doi.org/10.1109/ISSE.2009.5207068","url":null,"abstract":"LTCC technology has recently been used for microfluidic elements, e.g. channels, cavities and other passive fluidic components. However, microfluidic systems having enhanced functionality, e.g. differential pressure sensors, dosing devices and pumps, require active components that include electrically driven actuators. Up to now, only piezo-cantilevers, electromagnetic and thermo-pneumatic actuators have been engineered for the LTCC integration [1–4]. Due to their specific properties, they are not suitable for all applications that require an actuator. Therefore, a review on actuators capable of being integrated in LTCC is given. On the one hand, the actuators are compared according to their functional properties, e.g. stroke and switching energy, so that actuators can be figured out that fulfil the requirements of a microfluidic system to be designed. On the other hand, the technological challenges to be coped with in the integration of the actuators are listed. Both the functional properties of an actuator and the possibility to integrate it decide on the suitability for a specific application. Using our evaluation method, we introduced actuators for two different microfluidic applications, a piezo-electrically controlled throttle for a DMFC (Direct Methanol Fuel Cell) application and an electrostatic valve for a differential pressure sensor.","PeriodicalId":337429,"journal":{"name":"2009 32nd International Spring Seminar on Electronics Technology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126206156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}