A Novel Slot Antenna with Reconfigurable Meander-Slot DGS for Cognitive Radio Applications Mohammad M. Fakharian, Pejman Rezaei, and Ali A. Orouji Compact Reconfigurable UWB Slot Antenna for Cognitive Radio Applications Abstract: A very compact reconfigurable ultrawideband (UWB) stepped-slot antenna for cognitive radio (CR) applications is presented in this letter. Frequency Reconfigurable Antennas Design for Cognitive Radio ... Abstract. This paper proposes frequency reconfigurable antennas using genetic algorithm, suitable for cognitive radio applications. The optimization is applied to find the slot shape and the switches locations in the ground plane of monopole antennas for adjustment of the bandwidth.
Electronically reconfigurable filtenna for cognitive radios - Nachouane ...
A Frequency Reconfigurable Rotatable Antenna Design for Cognitive Radio Systems G. Prema P. Gayatri Professor, Mepco Schlenk Engineering College, Post Graduate Student, Mepco Schlenk Engineering College, Abstract Cognitive radio is an emerging technology for efficient use of radio spectrum where the spectrum can be used by the unlicensed secondary users without interference with the licensed primary users. This paper presents a modification of an existing cognitive antenna design: one is a ... Reconfigurable Antennas | Synthesis Lectures on Antennas Abstract. This lecture explores the emerging area of reconfigurable antennas from basic concepts that provide insight into fundamental design approaches to advanced techniques and examples that offer important new capabilities for next-generation applications. A Reconfigurable MIMO/UWB MIMO Antenna for Cognitive Radio ... A new incorporated planar ultrawideband (UWB)/reconfigurable-slot antenna is proposed for cognitive radio applications. A slot resonator is precisely embedded in the disc monopole radiator to ... A Selective Frequency-Reconfigurable Antenna for Cognitive ...
Electronically Reconfigurable Uniplanar Antenna With Polarization …
Reconfigurable Microstrip Printed Patch Antenna for Future Cognitive Radio Applications …
cognitive radio applications. A reconfigurable slot antenna for cognitive radio applications is presented in [4]. The antenna can be switched between any one of three discrete states. In [5], it is shown that once a cognitive design manages to learn the RF environment, one can use the collected data to train
(PDF) A Selective Frequency-Reconfigurable Antenna for Cognitive … PDF | This letter presents a selective frequency-reconfigurable antenna, suitable for cognitive radio applications. The proposed antenna is capable of switching between a wide operating band of 2 Frequency Reconfigurable Microstrip Antenna for Cognitive … reconfigurable antenna, suitable for cognitive radio applications. Reconfigurability is achieved by inserting PIN diode switches in DMS(defected microstrip structure) ‘T’ slot filter. The proposed antenna is capable of switching between a wide operating band of 3.0 GHz – 10 GHz and six different narrow band operating from 5 GHz to 10 GHz. A planar UWB antenna based on MB-OFDM applications with … In this paper, a switchable antenna with capability to operate in ultrawideband (UWB) frequency from 3 to 10.7 GHz with two switchable notch bands of 3.3–3.7 and 3.7–4.2 GHz, is presented for cognitive radio (CR) and multiband orthogonal frequency-division multiplexing (MB-OFDM) applications. Frequency Reconfigurable Antennas Design for Cognitive Radio Applications …
Implementation of a Cognitive Radio Front-End Using ...
In this chapter, reconfigurable antennas are reviewed for ultra-wideband (UWB) cognitive radio communication applications. The defected microstrip structure (DMS) has been reviewed and integrated into the UWB antennas to form the desired filtering antennas which can filter out unexpected narrowband signal interferences. Then, switches are incorporated into the filtering UWB antennas to ... Frequency Reconfigurable Antennas Design for Cognitive ... Abstract. This paper proposes frequency reconfigurable antennas using genetic algorithm, suitable for cognitive radio applications. The optimization is applied to find the slot shape and the switches locations in the ground plane of monopole antennas for adjustment of the bandwidth. Frequency Reconfigurable Microstrip Antenna for Cognitive ... reconfigurable antenna, suitable for cognitive radio applications. Reconfigurability is achieved by inserting PIN diode switches in DMS(defected microstrip structure) ‘T’ slot filter. The proposed antenna is capable of switching between a wide operating band of 3.0 GHz – 10 GHz and six different narrow band operating from 5 GHz to 10 GHz. Reconfigurable Band-Notched UWB Antenna for Cognitive ... PDF | A compact reconfigurable band-notched UWB antenna is presented in this paper. The antenna has a partial ground plane with a rectangular slot to achieve the desired bandwidth for UWB from 3 ...
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 ... reconfigurable antenna for cognitive radio communication. In [1], the authors present a reconfigurable antenna based on photoconductive switches. An UWB antenna is also incorporated for channel sensing. A reconfigurable slot antenna for cognitive radio applications is presented in [2]. A New Reconfigurable Antenna Design for Cognitive Radio ... This letter presents a new antenna design suitable for cognitive radio communication. It consists of two structures incorporated together into the same substrate. The first structure is an ultrawideband (UWB) antenna covering the spectrum from 3.1-11 GHz for channel sensing. The second structure is a frequency reconfigurable triangular-shaped patch for establishing communication with another ... A Novel Optically Controlled Reconfigurable Antenna for ...