Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Doraiswami, R. Bhatacharya, S. Abothu, I.R. Tummala, R. |
| Copyright Year | 2005 |
| Description | Author affiliation: Packaging Res. Center, Georgia Inst. of Technol., Atlanta, GA, USA (Doraiswami, R.; Bhatacharya, S.; Abothu, I.R.; Tummala, R.) |
| Abstract | Embedded systems play a crucial role is achieving very high component density and functions. Embedded actives have been the focus for three most important paradigms in systems integration. The paradigms are system in a package (SIP), system on a package (SOP) and system on a chip (SOC). ITRS road map requires very high component density by the year 2007. Embedded passives play an important role in determining frequency stability and signal integrity. Their stability depends on design, choice of material and process. There are limitations in achieving accurate parameters in the passives. Embedded passives have non reversible function or reworkability. These needs require techniques and process developed to have controlled actives which can change its parameters in a combination of mechanical, electrical and material properties. Flip chips are assembled on substrates enable thermal management. The need to mount several chip in unit area drives assembly process to wafer level chip stacking. There is need for embedded techniques to achieve good process for variable capacitors, resistors and inductors along with embedded flip chips. In this paper, we characterized the performance of a novel embedded variable capacitor fabricated using a polymer dielectric material, with one metal electrode fabricated on a low strength back plane to allow the electrode to flex. Sol-gel process is selected as it is a versatile technology to produce fine powders, fibers, coatings and is expected to yield highly homogeneous thin/thick films. A variable DC current is applied on the piezoelectric material to deform the dielectric, thereby changing the capacitance thus allowing the dielectric to behave as a variable capacitor. The compression effect on the dielectric also causes a thickness variation there by making the already submicron thick dielectric vary in thickness. The thinner dielectric makes it suitable for high frequency capacitance application. By changing the thickness of the dielectric and varying the frequency, the capacitor becomes very suitable to work over a broad range of frequencies and capacitances. The characteristics including material components and construction, dielectric properties and topography at metal-dielectric interfaces are optimized for a wide frequency band width. Attention is given to frequency dependence of the different material properties. Effects of the material characteristics on electrical performance, including capacitance are examined. Finally, processing and fabrication issues are discussed. |
| Starting Page | 1574 |
| Ending Page | 1577 |
| File Size | 327698 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780389077 |
| ISSN | 05695503 |
| DOI | 10.1109/ECTC.2005.1441999 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-05-31 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Capacitors Packaging Frequency Capacitance Dielectric materials Stability Material properties Flip chip Assembly Thermal management |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|