A Beam Steering Radial Line Slot Array (RLSA) Antenna with Reconfigurable Operating Frequency

Jamlos, Mohd Faizal; Aziz, Omar Abdul; Rahman, Tharek Abd; Kamarudin, M. R.; Saad, Puteh; Ali, Mohd Tarmizi; Tan, Mohd Nor Md

doi:10.1163/156939310791586034

Cited by 51 publications

(27 citation statements)

References 10 publications

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“…Due to the advantages of RLSA antennas, such as high gain, flat and high efficiency [2][3][4], RLSA antennas were also developed for other applications, such as for Wi-Fi [5][6][7][8][9][10][11][12][13][14]. In contrast to satellite applications, Wi-Fi needs much smaller antennas.…”

Section: Introductionmentioning

confidence: 99%

A Design of Compact Radial Line Slot Array (Rlsa) Antennas for Wi-Fi Market Needs

Purnamirza¹,

Kristanto²,

Ibrahim³

2016

PIER Letters

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Abstract-This paper proposes a compact Radial Line Slot Array (RLSA) antenna for 5.8 GHz Wi-Fi devices, which meets market needs. Various small RLSA antenna models with radius of 140 mm, were designed using extreme beamsquint technique. The models then were simulated to result in a best model. A prototype of the best model was then fabricated and measured to verify the simulation. The measured parameters are: a gain of 18 dBi, bandwidth of 1 GHz, beamwidth of 20 • , and mainlobe to sidelobe ratio of 15 dB, which meet antenna specifications for market needs. The prototype was tested as an antenna for a Wireless Fidelity (Wi-Fi) device in order to show its performance. The test showed that the prototype worked properly. Lastly, we compared the size of the prototype with the average size of various antennas available in markets. We found that the prototype had the advantage of small size and flat, with similar performance.

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Section: Introductionmentioning

confidence: 99%

A Design of Compact Radial Line Slot Array (Rlsa) Antennas for Wi-Fi Market Needs

Purnamirza¹,

Kristanto²,

Ibrahim³

2016

PIER Letters

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“…The radiation pattern reconfigurable square spiral microstrip antennas were proposed in [20], where RF MEMS switches were applied to reconfigure the square spiral but the radiation patterns were only reconfigured between endfire and broadside. A beam steering radial line slot array (RLSA) antenna with reconfigurable operating frequency was proposed in [21]. This antenna design is capable of steering its radiated beam to four different angles but the patterns have different beamwidths and gains.…”

Section: Introductionmentioning

confidence: 99%

A Switched-Beam Antenna Using Circumferential-Slots on a Concentric Sectoral Cylindrical Cavity Excited by Coupling Slots

Wounchoum¹,

Worasawate²,

Phongcharoenpanich³

et al. 2011

PIER

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Abstract-This paper presents a switched-beam antenna using circumferential-slot on a concentric sectoral cylindrical cavity excited by coupling slots to operate at 5.8 GHz. The advantages of this antenna are conformal structure, high directivity and capable of switched-beam pattern in six directions. The antenna design starts from a single sector which is capable of switching between radiating and non-radiating modes. The L-shaped coupling slots are proposed to accommodate the switching circuit. Each RF switch is made of two PIN diodes connected in a reverse series connection and placed across the slot at the appropriate location. Subsequently, the exciting probe is designed for matching TM 01 mode of the circular waveguide. The measured results of the proposed antenna give a gain of 7 dBi and |S 11 | less than −20 dB at 5.8 GHz. This antenna is suitable for base station applications that require the switched-beam pattern in the azimuthal plane.

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“…This can be visualized by focusing the beam of the antenna towards a particular user only [1]. Although a smart antenna system is favorable in many ways, there are drawbacks including more complex structure and the need to develop efficient algorithm for signal tracking purpose [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Hence, the antenna alone is not smart, but rather the system in which the antenna is integrated to could add the intelligence characteristics. Normally, the smart antenna system consists of radiating antennas and digital signal processor (DSP) as a control unit [1,[7][8][9][10]. To the author's knowledge, no transceiver system has demonstrated the combination of RFID technology and reconfigurable beam steering antenna in locating and adaptively response to user's location using PIC microcontroller as a control unit which is less complicated and cheaper than DSP.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Beam Steering of Rlsa Antenna With Rfid Technology

Jamlos¹,

Rahman²,

Kamarudin³

et al. 2010

PIER

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Abstract-A form of a novel adaptive antenna system that combines radio frequency identification (RFID) technology, programmable intelligent computer (PIC) microcontroller and reconfigurable beam steering antenna is proposed. Localization and adaptive response are the most challenging issues in smart antenna system. In this research, the localization technique relying on the received signal strength (RSS) signals has been done intensively where the capability of the RFID tag in producing certain level of signal strength has been exploited as a

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A Beam Steering Radial Line Slot Array (RLSA) Antenna with Reconfigurable Operating Frequency

Cited by 51 publications

References 10 publications

A Design of Compact Radial Line Slot Array (Rlsa) Antennas for Wi-Fi Market Needs

A Design of Compact Radial Line Slot Array (Rlsa) Antennas for Wi-Fi Market Needs

A Switched-Beam Antenna Using Circumferential-Slots on a Concentric Sectoral Cylindrical Cavity Excited by Coupling Slots

Adaptive Beam Steering of Rlsa Antenna With Rfid Technology

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