Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | IET Digital Library |
|---|---|
| Author | Haq, Muhammad Aziz Ul Koziel, Slawomir Cheng, Qingsha S. |
| Abstract | It is a common practice to achieve reduction of wideband antenna size by incorporating appropriate geometrical modifications into conventional antenna topologies (e.g. monopoles or uniplanar structures). The authors investigate a particular type of modification, which is changing the geometry of the feed line. The two basic geometries include a taper and a stepped-impedance line. They carry out systematic investigations concerning the effect of these feed line geometries on obtainable antenna miniaturisation rates. For the sake of generality, feed line geometries of various complexities are considered (from two to six sections). An automated adjustment of antenna geometry parameters through numerical optimisation is performed to ensure design optimality for each combination of antenna/feed structure. The optimisation process is formulated as an explicit size reduction task with a constraint on the maximum in-band reflection level. The investigations are performed using two selected ultra-wideband monopoles. The results indicate clear advantage of the stepped-impedance feed line over the tapered one. On the other hand, considerable size reduction can be obtained by increasing the geometrical complexity of the feed line, although the design problem becomes more challenging due to the increased number of antenna parameters. Numerical results are validated experimentally for selected antenna prototypes. |
| Starting Page | 2128 |
| Ending Page | 2134 |
| Page Count | 7 |
| ISSN | 17518725 |
| Volume Number | 12 |
| e-ISSN | 17518733 |
| Issue Number | Issue 13, Oct (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-map/12/13 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-map.2018.5197 |
| Journal | IET Microwaves, Antennas & Propagation |
| Publisher Date | 2018-07-31 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Antenna Accessory Antenna Feeds Antenna Miniaturisation Rates Antenna Topology Automated Antenna Geometry Parameter Adjustment Broadband Antenna Combinatorial Mathematics Explicit Size Reduction Task Feed Line Geometries Feed Line Topology Alterations Geometrical Complexity Geometrical Modifications Geometry Maximum In-band Reflection Level Monopole Antenna Numerical Optimisation Optimisation Optimisation Technique Single Antenna Stepped-impedance Line Taper Topology Ultra-wideband Monopoles Wideband Antenna Miniaturisation Wideband Antenna Size Reduction |
| Content Type | Text |
| Resource Type | Article |
| Subject | 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...
|