Structurally embedded photoconductive silicon bowtie antenna

Liu, D.; Charette, D.; Bergeron, Mélanie; Karwacki, H.; Adams, Stephen B.; Lanning, B.; Kustas, F.M.

doi:10.1109/68.669345

Cited by 18 publications

(3 citation statements)

References 5 publications

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“…The result shows the abilility to commute their pattern within an arbitrary number of radiation modalities which leads to an effective procedure for the fast antennas design with high performance. In other research, presenting at [3][4][5], mentioned that reconfigurable antenna were fabricated on high-resistivity silicon and equipped with two silicons as material switches. Then the laser was used to control the photoconductive switching material.…”

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confidence: 99%

Optically Switched Frequency for Reconfigurable Dipole Antenna Using Photodiode Switches

2016

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The design, fabrication, and measurement of reconfigurable antenna using photodiode switches have been investigated. The IntroductionAntenna is a basic component in communication system. It is very important and needed in communication system, specifically wireless communication system which has been running remarkably and dynamic. It causes the increase demand of antennas. Communication system which is generally complex needs antennas which have advance capabilities and good performances. So, many researchers have conducted experiments attempting to improve capabilities and performances of antenna in order to meet the need of communication system which grows continuously.One type of antenna which is able to accommodate the change of communication system necessity is reconfigurable antenna [1]. Such an antenna is able to adjust with the necessity of the communication system. In some ways it can convert operating frequency, radiation pattern, impedance, bandwidth via shorting/reactive loading to require resonant mode switching, by moving part (mechanical reconfiguration), optical switching, electronic switching, and feed network switching. Due to the fact that reconfigurable antenna adjustable, this antenna can eliminate the need of multiple antenna for communication systems.An innovative approach to the synthesis of phase-only reconfigurable, isophoric linear sparse arrays has been investigated in previous research [2]. The result shows the abilility to commute their pattern within an arbitrary number of radiation modalities which leads to an effective procedure for the fast antennas design with high performance. In other research, presenting at [3][4][5], mentioned that reconfigurable antenna were fabricated on high-resistivity silicon and equipped with two silicons as material switches. Then the laser was used to control the photoconductive switching material. The technique is conducted to prove that changes of effective length of antenna, it can change antenna resonance frequency. However, using silicon as photoconductive switches will require complicated technique during it insertion process on antenna substrate and silicon has high cost. Other techniques, is done previously by Kiriazi et al. in [6]. In this work, open and short of RF-MEMS switches were assembled on antenna which has a high-resistivity silicon substrate. In [7], varactor diode is used as switches. The other switching elements which are PIN diodes [8][9][10][11][12][13], an air gap [14][15], solar cell [16], and photodiode [17] have also been used at previous research. Therefore, in this paper we introduce a new optical switches geometry and technique of reconfigurable antennas by using photodiode as optical switching.

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confidence: 99%

Optically Switched Frequency for Reconfigurable Dipole Antenna Using Photodiode Switches

2016

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“…Previous investigations on optically tunable antennas have looked at the possibility of creating the entire antenna out of optically illuminated patches [8,9]. We have recently investigated this approach as well [10].…”

Section: Introductionmentioning

confidence: 99%

Investigation of an optically induced superstrate plasma for tuning microstrip antennas

Gamlath

Collett

Pang

et al. 2017

IET Optoelectronics

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Optically induced electron-hole plasmas in silicon are used to perform radiation pattern tuning.The antenna is a slot loaded microstrip patch and the effect of illumination is shown to produce beam switching in the radiation patterns of certain modes while other modes are left unaffected. The structure is specifically designed to make the best use of currently available miniature laser sources to form a compact tunable package. Modelled and measured results for tuning of the radiation patterns and frequency response are presented. The effect of the losses incurred by the plasma along with the losses in the optically transparent ground plane are quantified in both simulation and measurement. This forms the basis for designing other types of optically tunable miniature antennas based on the structure presented.

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“…The photoconductive properties of silicon are such that an electron-hole pair plasma is produced, and when there is sufficient concentration, it behaves like a conductor. This property of silicon is well known and has been utilized previously in the investigation of leaky wave radiation from dielectric slab waveguides [2], [3], control of Bragg gratings in a dielectric waveguide [4], reflection properties of photoinduced strip gratings [5], optically controlling a silicon coplanar waveguide [6] and, more recently, generation of a singular antenna element element using a light tank [7]. As wafers increase in size, printing an antenna array and operating it at microwave frequencies becomes more manageable.…”

Section: Introductionmentioning

confidence: 99%