Frequency reconfigurable dielectric resonator antenna for WiMAX/WLAN applications

Danesh, Shadi; Rahim, Sharul Kamal Abdul; Abedian, M.

doi:10.1002/mop.28906

Cited by 12 publications

(12 citation statements)

References 15 publications

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“…Danish et al (2015) also reported a 33 Â 45 mm 2 frequency agile array composed of three RDRs. 15 Two PIN diodes were used as switches to obtain three dual-band resonance modes, that is, 2.4 and 5 GHz mode, 2.5 and 5.2 GHz mode, and 3.5 and 5.8 GHz mode. Again, the realized gain was small which ranged from 1.17 to 2.14 dBi.…”

Section: Introductionmentioning

confidence: 99%

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Miniaturized reconfigurable dielectric resonator antenna array with reduced beam squinting

Qasaymeh

Almuhaisen

2022

Int J RF Mic Comp-Aid Eng

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In this study, a compact reconfigurable dielectric resonator antenna (DRA) array is proposed to operate in the band IEEE 802.11 WLAN. The main goal of this design is to propose an array feeding topology to avoid radiated beam squinting due to frequency alteration and acquire some gain enhancement with miniaturized array size. For that, the parallel-series geometry is used to layout a microstrip feeder with four output ports on the front plane. Each output port coupled with a rectangular slot (RS) at the bottom plane, and a rectangular dielectric resonator (RDR) mounted above the RS. The frequency reconfigurability is attained by employing PIN diodes that are integrated with the four output ports to operate as switches. Moreover, an impedance equivalent circuit model of the proposed array is postulated for studying the resonance behavior to ensure the validity of the proposed design prior to simulation and fabrication. The prototype 64 Â 18 mm 2 achieves frequency agility in the range of 5.8 to 5.17 GHz. Also, the realized gain ranges from 12.2 to 10. 5 dBi. The array specifications make it a decent potential candidate to be used for WLAN wireless systems.

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Section: Introductionmentioning

confidence: 99%

“…However, the gain was small ranging from 1.78 to 2.61 dBi. Danish et al (2015) also reported a 33 × 45 mm 2 frequency agile array composed of three RDRs 15 . Two PIN diodes were used as switches to obtain three dual‐band resonance modes, that is, 2.4 and 5 GHz mode, 2.5 and 5.2 GHz mode, and 3.5 and 5.8 GHz mode.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized reconfigurable dielectric resonator antenna array with reduced beam squinting

Qasaymeh

Almuhaisen

2022

Int J RF Mic Comp-Aid Eng

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“…In [17], a CPW-fed frequency tunable RDRA using two diodes is presented that changes from narrow-band to wide-band with the change in diode operation. A three RDR integrated with two PIN diodes produces dual-band frequency-reconfigurability in one/both ON-states [18]. Similarly, three diodes integrated among four RDRs works only for two/more ON-states to achieve a single-band frequencyreconfigurability [19].…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, three diodes integrated among four RDRs works only for two/more ON-states to achieve a single-band frequencyreconfigurability [19]. The increased number of elements and associated bias lines in [18], [19] results in com- plexity. In [20], a combination of three diodes achieved a narrow-band tunable response.…”

Section: Introductionmentioning

confidence: 99%

An Electronically-Switched Frequency-Agile Hybrid Dielectric Resonator Antenna With a Fixed Reconfigurable Circularly Polarized Band

Altaf

Seo

2020

IEEE Access

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In this article, an electronically-controlled frequency-agile hybrid dielectric resonator antenna is presented that also produces a reconfigurable circularly polarized (CP) wave over a specific frequency range. Two L-shaped metallic strips are placed adjacent to a partial ground plane that can be shorted/detached in four combinations using two PIN diodes (D1 and D2). Frequency reconfigurability is achieved by switching from both OFF to at least one ON state to yield a single and dual-band responses for the former and latter, respectively. The Eigen mode simulation reveals that the upper-band is mainly attributed to the quasi-TE δ21 mode of the rectangular dielectric resonator. The lower-band in one and two ON-states arises due to the dielectric-loaded monopole antenna and the strip-loaded partial ground plane, respectively. The ON-OFF state produces a right-handed CP wave at the lower band that can be reconfigured to a left-handed CP wave by switching to OFF-ON state. A fabricated sample is measured and simulation results are validated. The measured −10 dB impedance bandwidths for OFF-OFF, ON-ON, OFF-ON, and ON-OFF are 13.31% (4.42-5.05 GHz), 11.30% (2.17-2.43 GHz)/27. GHz)/17.94% (4.16-4.98 GHz), and 26.57% (2.48-3.24 GHz)/18.7% (4.12-4.97 GHz), respectively. The measured 3 dB axial ratio bandwidths are 12.20% (2.54-2.87 GHz) and 10.95% (2.59-2.89 GHz) when D1 and D2 are turned-ON alternatively.INDEX TERMS Circular polarization reconfigurability, dielectric resonator antenna (DRA), frequency reconfigurable antenna.

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“…This reconfigurable dielectric resonator antenna works in different bands by setting the switch on the connecting lines of a network that feeds the dielectric element and changing the state of switch from ON to OFF, a shift of the well-matched operating frequency range is obtained. In [25] an air-filled channel between dielectric resonator antenna and the plane of the ground is introduced, which can lead a frequency shift to lower frequencies by employing a slide metalized dielectric slugs under the DR. Another technique that brings about a reconfigurable DRA is the use of the switches on the way of feed line to create some dual-band and narrowband frequency [26], [27]. However, by using different types of electronic devices such as field-effect transistors (FETs), microelectromechanical system switches (MEMS), or PIN diodes can attain discrete tunable frequency [28], [29].…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Dielectric Resonator Antenna Using an Inverted U-shaped Slot

Abediankasgari

Khalily

Danesh

et al. 2020

2020 International Symposium on Networks, Computers and Communications (ISNCC)

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A novel reconfigurable dielectric resonator antenna (DRA) employed a T-Shaped microstrip-fed structure in order to excite the dielectric resonator is presented. By carefully adjusting the location of the inverted U-shaped slot, switches, and length of arms, the proposed antenna can support WLAN wireless system. In addition, the presented DRA can be proper for cognitive radio because of availability switching between wideband and narrowband operation. The proposed reconfigurable DRA consisting of a Roger substrate with relative permittivity 3 and a size of 20 mm × 30 mm × 0.75 mm and a dielectric resonator (DR) with a thickness of 9 mm and the overall size of 18 mm × 18 mm. Moreover, the antenna has been fabricated and tested, which test results have enjoyed a good agreement with the simulated results. As well as this, the measured and simulated results show the reconfigurability that the proposed DRA provides a dual-mode operation and also three different resonance frequencies as a result of switching the place of arms.

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Frequency reconfigurable dielectric resonator antenna for WiMAX/WLAN applications

Cited by 12 publications

References 15 publications

Miniaturized reconfigurable dielectric resonator antenna array with reduced beam squinting

Miniaturized reconfigurable dielectric resonator antenna array with reduced beam squinting

An Electronically-Switched Frequency-Agile Hybrid Dielectric Resonator Antenna With a Fixed Reconfigurable Circularly Polarized Band

Reconfigurable Dielectric Resonator Antenna Using an Inverted U-shaped Slot

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