Cognitive Radio: An efficient and effective solution for future spectrum implications

Sharma, Sonia; Tripathi, C. C.; Rishi, Rahul

doi:10.1109/comptelix.2017.8003948

Cited by 8 publications

(9 citation statements)

References 23 publications

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“…The main incentive of the CR technology is the improvement and optimization of spectrum utilization because Bulletin of Electr Eng & Inf ISSN: 2302-9285  Compact tri-band T-shaped frequency reconfigurable antenna for…(Abdullah A. Jabber) 213 of the 90% of the time the offered channels are ideally free. The CR functioning consists of three main st ep s, they are spectrum sensing, analysis, decision, and mobility which can be shown in [3].…”

Section: Introductionmentioning

confidence: 99%

“…The cognitive radio antenna design can be classified into three main parts, the first and the second classes are two ports one for UWB sensing antenna and the second for communic ating antenna for the electrical and mechanical reconfigurations, while the third class is a single port of a UWB/narrowband antenna with reconfigurable slots [3][4]. In [9-10], a CR system is presented based on two-port mechanical reconfigurability wherein [9] the sensing UWB and reconfigurable antennas are fabricated on the same substrate.…”

Section: Introductionmentioning

confidence: 99%

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Compact tri-band T-shaped frequency reconfigurable antenna for cognitive radio applications

Jabber

Thaher

2020

Bulletin EEI

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This paper presents, new compact tri-band and broadband frequency reconfigurable antenna for cognitive radio applications. The proposed antenna consists of an Ultrawideband sensing antenna and reconfigurable communicating antenna at the same substrate. The sensing antenna is a UWB printed elliptical monopole antenna operates at frequency band from 2.72 to 23.8 GHz which can cover the entire UWB frequency band from 3.1 to 10.6 GHz and cover the broadband up to 20 GHz. The communicating antenna is a T-shaped frequency reconfigurable antenna operates on three bands of 7.925 GHz, 13.16 GHz, and 14.48 GHz under (S11≤-10 dB) with a fractional bandwidth of 14.55%, 6.2%, and 3.3% respectively. The proposed antenna used to operate in two modes one for cognitive radio applications to cover WiMAX, land, Fixed and Mobile satellite, Radar, and broadband applications. The frequency reconfigurability is obtained by using only one RF switch (PIN diode) for changing the operating frequency. The antenna overall dimensions are 42x30x1.6 mm3 printed on an FR-4 epoxy substrate with relative dielectric constant εr=4.3, loss tangent tan (δ)=0.002 and 50Ω microstrip line feed. The maximum obtained simulated gain is 8.5 dB at 13.16 GHz. The S11 is under -20 dB and coupling between the two antennas is less than -15 dB at the resonant frequencies.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Compact tri-band T-shaped frequency reconfigurable antenna for cognitive radio applications

Jabber

Thaher

2020

Bulletin EEI

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“…The main incentive of the CR technology is the improvement and optimization of spectrum utilization because of the 90% of the time the offered channels are ideally free. The CR functioning consists of three main steps, they are spectrum sensing, analysis, decision, and mobility which can be shown in Figure 1 [3].…”

Section: Introductionmentioning

confidence: 99%

New compact multiband inverted-L frequency reconfigurable antenna for cognitive radio applications

Jabber

Thaher

2020

IJEECS

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This paper presents, new compact and multiband frequency reconfigurable antenna for cognitive radio applications. A UWB sensing and reconfigurable communicating antennas are contained at the same substrate, where the UWB sensing antenna is an elliptical printed monopole antenna operates on frequency band from (2.65-22.112) GHz which can cover the UWB frequency band from 3.1 to 10.6 GHz, while the communicating antenna is an inverted-L frequency reconfigurable antenna operates on three bands of 1.49 GHz, 5.58 GHz, and 5.6 GHz under (S11 ≤ -10 dB) with a fractional bandwidth of 5.872%, 6.02%, and 6.05% respectively. The proposed antenna used to operate in two modes one for cognitive radio applications to cover WLAN applications at 5.5 GHz and 5.6 GHz and the second mode for wireless Ethernet, GPS synchronization, and Internet of Things that Matter (IoTtM) at 1.49 GHz. The frequency reconfigurability is obtained by using only a single RF switch (PIN diode) for changing the operating frequency. The antenna overall dimensions are 72 x 36 x 1.6 mm<sup>3</sup> printed on an FR-4 epoxy substrate of 4.3 relative-permittivity, loss tangent tan (δ) = 0.002 and 50 Ω micro stripline feed. The obtained simulated gain is ranging from 1.35 to 4.132 dBi. The S11 and isolation (S12) between the two antennas are under -20 dB and -17 dB respectively at the resonant frequencies.

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“…The research area of the antenna designs has become more interesting with the advancements in next generation wireless technology [1][2][3]. The antenna structure should possess multiple tunable functionalities into a small package.…”

Section: Introductionmentioning

confidence: 99%

Two Port Integrated Reconfigurable Microstrip Patch Antenna

Sharma¹,

Tripathi²,

Rishi³

2019

PIER C

Self Cite

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A two port, integrated reconfigurable versatile antenna is proposed here. The proposed antenna can reconfigure its frequency, bandwidth, polarization state and radiation pattern and hence is versatile in its characteristics. The antenna is integrated in such a way that the space of one antenna can be used to print two antenna structures to increase the antenna versatility into a small package. PIN diodes are placed in a position so that the electrical switching of the PIN diodes makes every part of the antenna multipurpose. The prototype has been fabricated to authenticate the simulated results. The simulated and measured results are in good agreement. The antenna can be used for Cognitive Radio application.

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Cognitive Radio: An efficient and effective solution for future spectrum implications

Cited by 8 publications

References 23 publications

Compact tri-band T-shaped frequency reconfigurable antenna for cognitive radio applications

Compact tri-band T-shaped frequency reconfigurable antenna for cognitive radio applications

New compact multiband inverted-L frequency reconfigurable antenna for cognitive radio applications

Two Port Integrated Reconfigurable Microstrip Patch Antenna

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