Abstract
A novel Vivaldi antenna is presented with tunable narrow band rejection characteristics within the overall operating bandwidth. A microstrip line resonator is incorporated within the Vivaldi antenna to give a narrow stop band action. Three varactors are loaded into the resonator and are used for tuning. The stop band can be activated in the frequency range between 2 and 7 GHz to give a very wide tuning ratio of 3.5:1. Good agreements between simulated and measured results are observed, which verify the design concepts. (C) 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1125-1128, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25924
| Original language | English |
|---|---|
| Pages (from-to) | 1125-1128 |
| Number of pages | 4 |
| Journal | Microwave and Optical Technology Letters |
| Volume | 53 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1 May 2011 |
Keywords
- wideband antenna
- Vivaldi antenna
- cognitive radio
- tunable
- band rejection