Reconfigurable slot antenna for cognitive radio applications

By Mark Zuckerberg

Reconfigured and Notched Tapered Slot UWB Antenna for ...

Spectrum Sharing in Cognitive Radio Networks - PDF Spectrum Sharing in Cognitive Radio Networks Fan Wang, Marwan Krunz, and Shuguang Cui Department of Electrical & Computer Engineering University of Arizona Tucson, AZ Rafael Ferreira da Silva Caldeirinha IT - Instituto de Telecomunicações, exists to create and disseminate scientific knowledge in the field of telecommunications. Jose Carlos Esteves Duarte Pedro IT - Instituto de Telecomunicações, exists to create and disseminate scientific knowledge in the field of telecommunications. radio ultra wide: Topics by WorldWideScience.org

Rafael Ferreira da Silva Caldeirinha

Reconfigurable Wideband Patch Antenna for Cognitive Radio Reconfigurable Wideband Patch Antenna for Cognitive Radio H. F. AbuTarboush 1, S. Khan , ... antenna for wireless applications has been reported with very wide range tenability. In [7] reconfigurable patch antenna for ... It introduces reconfigurable patch antenna with a C-slot shape,

748 S. SHARMA, C. C. TRIPATHI, AN INTEGRATED FREQUENCY RECONFIGURABLE ANTENNA FOR COGNITIVE RADIO … in UWB monopole without much affecting the S11 re-sponse, than this space can be reused to integrate another NB antenna. Therefore, in configuration-II a very thin slit is etched in the UWB antenna, which separates the region

Reconfigurable slot antenna for Cognitive Radio applications Reconfigurable slot antenna for Cognitive Radio applications Abstract: This paper presents a printed antenna having a reconfigurable impedance bandwidth. The bandwidth can be switched between any one of three discrete states. In the first two states the antenna yields a UWB response ranging from 8.14GHz and 2.55GHz, respectively, to a frequency ... Compact Reconfigurable UWB Slot Antenna for Cognitive ... Abstract: A very compact reconfigurable ultrawideband (UWB) stepped-slot antenna for cognitive radio (CR) applications is presented in this letter. The proposed antenna operates in two modes: UWB mode for sensing application and communicating mode for different narrow/wideband communication applications. A Novel Slot Antenna with Reconfigurable Meander-Slot DGS ...

Frequency Reconfigurable Antenna for Cognitive Radio which is act as a fast switching antenna capable of operating in seven different frequencies in the range of 6.25 to 8.25 GHz[14]. Mohammad M. proposed a Reconfigurable Antenna with Extended U-Slot used as a Switchable Polarization for Wireless Applications.

A compact wide-slot UWB antenna with reconfigurable and sharp dual-band notches for underlay cognitive radio applications Falih Mahdi ALNAHWI1;∗,, Abdulghafor Abdulghafar ABDALHAMEED2, Husham Lateef SWADI 1,, Abdulkareem Swadi ABDULLAH , 1Department of Electrical Engineering, College of Engineering, University of Basrah, Basra, Iraq COMPACT SIZE RECTANGULAR PATCH RECONFIGURABLE ANTENNA FOR ... Compact Size Rectangular Patch Reconfigurable Antenna for Cognitive Radio Applications 26 As shown in the Fig. 4, we are getting a return loss of -20.3dB and -26.76dB res. at 4.3GHz and 7.8GHz res. when only S1,S2 are ON i.e. the wide band mode. E. Impedance plot and Radiation patterns: Fig. 5. Impedance plot of the proposed antenna Integrated Cognitive Radio Antenna Using Reconfigurable ...