A Selective Frequency-Reconfigurable Antenna for Cognitive Radio Applications

Mansoul, Ali; Ghanem, F.; Hamid, M. R.; Trabelsi, Mohamed

doi:10.1109/lawp.2014.2311114

Cited by 142 publications

(73 citation statements)

References 12 publications

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“…Antenna is printed on FR-4 substrate εr of 4.4, tanδ of 0.02. The antenna has a compact size of 40381.59mm 3 . In the proposed structure, a cup shaped slot is etched below the feedline and the upper edges of ground plane are cut to achieve impedance matching over a wide bandwidth.…”

Section: Antenna Design and Configurationmentioning

confidence: 99%

“…Thus, efficient use of spectrum is achieved by frequency agile/frequency reconfigurable antennas or wideband antenna with reconfigurable notches. [3][4][5] shows that antenna can select either a narrow band or wideband mode of operation depending on the reconfigurability selection. The author discusses ultra wideband antennas with reconfigurable band notch/rejection characteristics which find application for spectrum sensing and interference free spectrum allocation in cognitive radios.…”

Section: Introductionmentioning

confidence: 99%

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Uwb Antenna With Reconfigurable Triple Band Notched Characteristics for Cognitive Radio

Kholapure¹,

Karandikar²

2017

IJCT

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A novel printed circular monopole antenna with bandwidth more than ultra-wide band along with reconfigurable single, dual and triple notch band is presented. The antenna provides bandwidth of 3.04 -17.2 GHz by generating additional resonances towards higher end with modified ground structure. Moreover, the reconfigurable notches at WiMAX, WLAN and downlink of X band satellite communication are designed using slot technique to reduce interference at these wireless services if present. Thus, designed antenna provides a good solution for spectrum sensing and dynamic spectrum access as required in cognitive radios. The reconfiguration of notch bands is experimented using 0 ohm surface mounted resistors to show RF switching.

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Section: Antenna Design and Configurationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Uwb Antenna With Reconfigurable Triple Band Notched Characteristics for Cognitive Radio

Kholapure¹,

Karandikar²

2017

IJCT

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“…The under utilization of the frequency spectrum has been inspiring the use of Reconfigurable Radio concepts, such as Cognitive Radio (CR). The CR senses the spectrum and reconfigures itself to optimize its operation for more efficient communications and spectrum use [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

A Wide Spectrum Sensing and Frequency Reconfigurable Antenna for Cognitive Radio

Sharma¹

2016

PIER C

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Abstract-A novel hybrid antenna capable of both spectrum sensing and frequency reconfigurability is proposed in this paper. The proposed hybrid antenna senses spectrum over a wide frequency range from 1 GHz-12 GHz and accordingly reconfigures its operating frequency in any of the four different frequencies, i.e., 2.1 GHz, 2.96 GHz, 3.5 GHz and 5 GHz. Since wideband response for spectrum sensing and each frequency state works independently, there is no interference among various signals. The wideband response for spectrum sensing is obtained by exciting semicircular arc having staircase-shaped slot in the ground plane. Frequency reconfiguration is achieved by electronic switching among various matching stubs. Both simulated and experimental results for the return loss, gain and radiation patterns are presented. The proposed hybrid antenna shows a measured return loss better than −20 dB in all the operating bands, a bidirectional radiation pattern and 4.8 dB gain in θ = 20 • and 120 • in E plane.

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“…In recent years, development of smart components for SDR (Software Defined Radio) communication system have attracted the attention of researchers [1][2][3]. These smart components can sense, learn and be aware of their dynamic environment and are also capable of overcoming the serious effects of propagation fading.…”

Section: Introductionmentioning

confidence: 99%

Frequency Reconfigurable U-Slot Antenna for SDR Application

Sharma¹,

Tripathi²

2015

PIER Letters

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Abstract-In this paper, a novel frequency reconfigurable U-slot microstrip antenna with T-shaped feed line for Software Defined Radio applications is proposed. The proposed antenna, indexed as A-I in this paper, operates at three different frequencies: 1.85 GHz, 1.9 GHz and 2.4 GHz depending on the switching states of PIN diodes. Furthermore, to strengthen the proposed design concept and strategy another improved antenna (A-II) is designed and tested. In comparison to antenna A-I, the improved antenna design (A-II) utilizes four slots/PIN diodes in order to increase the number of reconfigurable frequency states. Depending on the switch states of four PIN diodes, antenna A-II operates on five different reconfigurable frequency bands centered at: 1.5 GHz, 1.6 GHz, 1.8 GHz, 1.9 GHz and 2.24 GHz. The measured results show a return loss better than 22 dB, maximum gain of 2.5 dB and maximum efficiency of 78%. Moreover, radiation pattern for the proposed antennas is stable at all operating frequencies.

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A Selective Frequency-Reconfigurable Antenna for Cognitive Radio Applications

Cited by 142 publications

References 12 publications

Uwb Antenna With Reconfigurable Triple Band Notched Characteristics for Cognitive Radio

Uwb Antenna With Reconfigurable Triple Band Notched Characteristics for Cognitive Radio

A Wide Spectrum Sensing and Frequency Reconfigurable Antenna for Cognitive Radio

Frequency Reconfigurable U-Slot Antenna for SDR Application

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