A Compact Frequency-Reconfigurable Dielectric Resonator Antenna for LTE/WWAN and WLAN Applications

Danesh, Shadi; Rahim, S. K. A.; Abedian, M.; Hamid, M. R.

doi:10.1109/lawp.2014.2369411

Cited by 56 publications

(43 citation statements)

References 18 publications

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“…The key advantage of RAs is its ability to satisfy the need for multifunctional operation, and then reduces the size and the cost of radio system. A great many studies have been contributed to RAs, but most are based on the electric reconfiguration, such as dual band varactor‐loaded slot patch antenna , compact reconfigurable dielectric resonator antenna , and the others . The electric reconfiguration needs extra complex circuits to supply electric power, which may connect with reconfigurable elements and then affect the performance of the RA.…”

Section: Introductionmentioning

confidence: 99%

Realizing frequency reconfigurable antenna by ferrite-loaded half-mode SIW

Lou

Meng

et al. 2017

Microw. Opt. Technol. Lett.

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We propose and experimentally demonstrate a frequency reconfigurable antenna using ferrite loaded half‐mode substrate integrated waveguide (SIW). The antenna design is based on a SIW cavity with an embedded ferrite slab, which causes the resonant frequency of the cavity tunable under bias magnetic field. The antenna features omni‐direction radiation and small size. A prototype antenna is designed and fabricated. The measurements show the tunable frequency bandwidth is over 11% covering frequencies 5.04–5.62 GHz in low bias magnetic field region, and 5% covering 4.28–4.5 GHz in high bias magnetic field region. The measurement is in good agreement with simulations. The gain of antenna is all over 1.6 dBi, and the frequency reconfiguration does not affect the radiation pattern of the antenna, providing a preferable feature for frequency reconfigurable antenna. This type of antenna may be a good candidate for practical applications such as base stations and satellites. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:1365–1371, 2017

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Section: Introductionmentioning

confidence: 99%

Realizing frequency reconfigurable antenna by ferrite-loaded half-mode SIW

Lou

Meng

et al. 2017

Microw. Opt. Technol. Lett.

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“…13 Recently, great efforts have been paid on the frequency tunable DRA and various frequency tuning techniques have been exploited. [14][15][16][17][18] For example, the lengths and positions of the parasitic slot and strip can be used to tune the frequency of the DRA. 19,20 However, this approach does not support dynamic frequency tuning.…”

Section: Introductionmentioning

confidence: 99%

Thermally tunable slot-coupled dielectric resonator antenna

Chen

Wang

et al. 2017

AIP Advances

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Absorption enhancement and total absorption in a graphene-waveguide hybrid structure AIP Advances 7, 025101 (2017); https://doi.org/10.1063/1.4975706The influence of the edge effect on the skyrmion generation in a magnetic nanotrack AIP Advances 7, 025105 (2017) A thermally tunable slot-coupled dielectric resonator antenna (DRA) has been designed and prepared by placing a thermosensitive ceramic resonator onto the slot. Typical magnetic resonance occurs in the resonator, which is closely related to its dielectric constant. Because the dielectric constant of the ceramic resonator decreases as the temperature increases, the resonance frequency of the proposed DRA increases as the temperature increases. The simulated results are in good agreement with the measured ones, which confirms the thermally tunable behavior. This approach provides a way for designing the frequency tunable antennas. © 2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license

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“…Various types of antennas, such as microstrip patch antennas [3,4] and dielectric resonator antennas (DRAs) [5,6], have been investigated and developed for wireless communications. However, microstrip patch antennas (known as metallic-based antennas) usually have low radiation efficiency levels, owing to conductor loss.…”

Section: Introductionmentioning

confidence: 99%

A Wideband Circularly Polarized Antenna with a Multiple-Circular-Sector Dielectric Resonator

Trinh-Van

Yang

Lee

et al. 2016

Sensors

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This paper presents the design of a wideband circularly polarized antenna using a multiple-circular-sector dielectric resonator (DR). The DR is composed of twelve circular-sector DRs with identical central angles of 30∘ but with different radii. A genetic algorithm is utilized to optimize the radii of the twelve circular-sector DRs to realize wideband circular polarization. The proposed antenna is excited using an aperture-coupled feeding technique through a narrow rectangular slot etched onto the ground plane. An antenna prototype is experimentally verified. The measured −10 dB reflection and 3 dB axial ratio (AR) bandwidths are 31.39% (1.88–2.58 GHz) and 19.30% (2.06–2.50 GHz), respectively, covering the operating bands of the following systems: UMTS-2100 (2.145 GHz), WiMAX (2.3 GHz), and Wi-Fi (2.445 GHz). A measured peak gain of 7.65 dBic at 2.225 GHz and gain variation of less than 2.70 dBic within the measured 3 dB AR bandwidth are achieved. In addition, the radiation patterns of the proposed antenna are presented and discussed.

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A Compact Frequency-Reconfigurable Dielectric Resonator Antenna for LTE/WWAN and WLAN Applications

Cited by 56 publications

References 18 publications

Realizing frequency reconfigurable antenna by ferrite-loaded half-mode SIW

Realizing frequency reconfigurable antenna by ferrite-loaded half-mode SIW

Thermally tunable slot-coupled dielectric resonator antenna

A Wideband Circularly Polarized Antenna with a Multiple-Circular-Sector Dielectric Resonator

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