Optically Pumped Frequency Reconfigurable Antenna Design

Tawk, Y.; Albrecht, Alexander R.; Hemmady, Sameer; Balakrishnan, G.; Christodoulou, C.G.

doi:10.1109/lawp.2010.2047373

Cited by 119 publications

(68 citation statements)

References 11 publications

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“…The reconfiguration techniques used in the literature mainly use the following active components: MEMS [4], PIN diodes or RF devices [6][7][8], Varicap [9], optical reconfiguration techniques [10][11] ; we can also find reconfigurable antenna based on mechanical techniques [12] and still others a mixture of several techniques [13][14][15]. In this work we set out a miniature antenna with a simple reconfiguration technique to cover the S-band with flexibility and give important frequency responses to the targeted band.…”

mentioning

confidence: 99%

Miniature design of T-Shaped frequency Reconfigurable antenna for S-Band Application using Switching Technique

Maleky¹,

Abdelouahab²,

Essaaidi³

et al. 2017

IJECE

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The article presents a miniature antenna with a simple geometry and a simple approach for reconfiguration. In order to make the T-shaped antenna frequency reconfigurable, we integrated Switches in specific positions. The location of the switches is determined following a study of the distribution of the surface currents of the suggested antenna. Indeed, we found that the insertion of switches in places where the concentrations of surface currents are high is irrelevant. In fact, to redirect current flow, the PIN diodes or RF Switch must be placed in positions where the distribution of the surface currents is of low concentration. These locations facilitate the establishment of new trajectories of the flux of current. As a result, a miniature tunable antenna dimension 20mm*20mm*1.6mm printed on FR4 substrate with 4.4 permittivity and with 0.04 loss tangent, the antenna can be adopted in many communication devices in view of its small size, its low manufacturing cost and performance on frequency sweep, the antenna operates in S-Band with an acceptable band and gain. The antenna is simulated and optimized using CST Microwave Studio.

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mentioning

confidence: 99%

Miniature design of T-Shaped frequency Reconfigurable antenna for S-Band Application using Switching Technique

Maleky¹,

Abdelouahab²,

Essaaidi³

et al. 2017

IJECE

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show abstract

“…As the silicon is near intrinsic, the density of holes and electrons is assumed to be equal. Electron and hole mobility µh and µe are respectively 1414 cm 2 The carrier lifetimes presented in Table II are based on this carrier concentration for an undiced wafer.…”

Section: ) Passivationmentioning

confidence: 99%

“…Panagamuwa et al presented a dipole antenna [1], where frequency and beam pattern can be reconfigured. Tawk et al reported on a reconfigurable circular patch antenna for use in cognitive radio applications [2]. A steerable antenna array incorporating optically controlled EBG phase shifters is presented by Chauraya et al, where a wide beam scan was achieved when operated by low power LEDs [3].…”

Section: Introductionmentioning

confidence: 99%

Optimising the performance of an optically controlled microwave switch

Kowalczuk

Seager

Panagamuwa

et al. 2012

2012 Loughborough Antennas &Amp; Propagation Conference (LAPC)

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“…The use of photoconductive switches has been proven in a variety of applications -the main benefit being that the RF performance of the system need not be compromised by the presence of DC biasing lines. Tawk et al report the use of two silicon switches in a reconfigurable circular patch antenna [1]. In this instance silicon dice are illuminated directly via laser diodes in order to alter operating frequency.…”

Section: Introductionmentioning

confidence: 99%