Implementation of a Cognitive Radio Front-End Using Rotatable Controlled Reconfigurable Antennas

Tawk, Y.; Costantine, J.; Avery, Keith; Christodoulou, C.G.

doi:10.1109/tap.2011.2122239

Cited by 198 publications

(105 citation statements)

References 10 publications

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“…The technique for designing an antenna for narrowband (WLAN) and wideband (UWB) has first been proposed in [6,7]. The authors in [6] propose a narrowband antenna by utilizing an inverted F-shaped resonator printed on the opposite side of a coplanar waveguide (CPW) fed UWB antenna.…”

Section: Related Workmentioning

confidence: 99%

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Switchable Planar Monopole Antenna Between Ultra-Wideband and Narrow Band Behavior

Nejatijahromi¹,

Naghshvarianjahromi²,

Rahman³

2018

PIER Letters

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Abstract-In this paper, we propose a novel compact switchable monopole CPW-fed antenna which has the ability to be used for narrowband as well as UWB applications. A single element antenna to be used for wireless local area network (WLAN) applications is first proposed in this article having overall dimensions of 24 × 30.5 mm 2 . The corresponding antenna has been transformed to UWB frequency range just by utilizing two variable capacitors within the designed structure. The proposed small size, variable, low cost as well as low weight antenna with good propagation characteristics performs well in the WLAN as well as in the UWB frequency band. The proposed antenna is simulated using Ansoft HFSS, and results are validated in CST Microwave Studio suite. The proposed antenna has also been fabricated, and the measured response is correlated with the simulated ones.

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Section: Related Workmentioning

confidence: 99%

“…In [7], an egg-shaped UWB antenna with five different patch radiators within a circular section is designed on the same substrate. By physically rotating the circular part using a stepper motor, the operating frequency of the antenna can be made adjustable.…”

Section: Related Workmentioning

confidence: 99%

Switchable Planar Monopole Antenna Between Ultra-Wideband and Narrow Band Behavior

Nejatijahromi¹,

Naghshvarianjahromi²,

Rahman³

2018

PIER Letters

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“…The board used was of dimensions 150×150 mm 2 . CR antennas with both reconfigurable MIMO and sensing antennas were presented [7]- [10]. In [7], a frequency reconfigurable communication antenna was presented covering 2.1∼3 GHz, 3∼3.4, 3.4∼5.56, 5.4∼6.2 GHz and 6.3∼10 GHz while the UWB antenna covered 2.1∼10 GHz.…”

Section: Introductionmentioning

confidence: 99%

“…CR antennas with both reconfigurable MIMO and sensing antennas were presented [7]- [10]. In [7], a frequency reconfigurable communication antenna was presented covering 2.1∼3 GHz, 3∼3.4, 3.4∼5.56, 5.4∼6.2 GHz and 6.3∼10 GHz while the UWB antenna covered 2.1∼10 GHz. Both the reconfigurable and UWB antennas R. Hussain and M. S. Sharawi are with the Electrical Engineering Department, King Fahd University for Petroleum and Minerals (KFUPM) Box 34, Dhahran, 31261 Saudi Arabia, Email: {rifaqat, msharawi}@kfupm.edu.sa A. Shamim is with the Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University (KAUST) of Science and Technology, Thuwal 23955-6900, Saudi Arabia, Email:atif.shamim@kaust.edu.sa were of modified monopole type.…”

Section: Introductionmentioning

confidence: 99%

An Integrated Four-Element Slot-Based MIMO and a UWB Sensing Antenna System for CR Platforms

Hussain

Sharawi

Shamim

2018

IEEE Trans. Antennas Propagat.

103

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Abstract-This paper presents a novel integrated antenna system for cognitive radio (CR) applications. The design consists of a compact 4-element reconfigurable annular slot based multiple-input-multiple-output (MIMO) antenna system integrated within an ultra-wide-band (UWB) sensing antenna. All the antenna elements are planar in structure and designed on a single substrate (RO-4350) with dimensions 60×120×1.5 mm 3 . The frequency reconfigurable slot based MIMO antenna system is tuned over a wide frequency band from 1.77 GHz to 2.51 GHz while the UWB sensing antenna is covering from 0.75∼7.65 GHz The proposed antenna system is suitable for CR enabled wireless devices. The envelope correlation coefficient (ECC) did not exceed 0.248 in the entire operating band of the MIMO antenna part. The maximum measured gain of the MIMO antenna is 3.2 dBi with maximum efficiency of 81%.

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“…As one type of these antennas, the frequency reconfigurable antenna, which provides chosen operating frequencies according to the varying radio environment, can make efficient use of spectrum without interference to other frequency bands, so it is an appropriate candidate for cognitive radio applications [1], [2]. Compared with using multiple transceivers that integrate with multiple antennas to serve several wireless systems, an individual frequency reconfigurable antenna which can operate in different resonant frequencies with a reduced size and an easier fabricated structure is a better choice.…”

Section: Introductionmentioning

confidence: 99%

A Frequency-Reconfigurable Monopole Antenna with Switchable Stubbed Ground Structure

Liu¹,

Yang²,

Kong³

2015

RADIOENGINEERING

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Implementation of a Cognitive Radio Front-End Using Rotatable Controlled Reconfigurable Antennas

Cited by 198 publications

References 10 publications

Switchable Planar Monopole Antenna Between Ultra-Wideband and Narrow Band Behavior

Switchable Planar Monopole Antenna Between Ultra-Wideband and Narrow Band Behavior

An Integrated Four-Element Slot-Based MIMO and a UWB Sensing Antenna System for CR Platforms

A Frequency-Reconfigurable Monopole Antenna with Switchable Stubbed Ground Structure

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