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Substrate integrated waveguide cavity backed frequency reconfigurable antenna for cognitive radio applies to internet of things applications
Published 2019“…Reconfiguration of frequency bands is achieved using PIN diodes. The antenna resonated at 2.624, 2.664, 2.720, 2.752, 4.304, 4.532, 4.556, 5.236, 5.304, 5.368, 5.332, and 5.392 GHz. …”
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Electronically reconfigurable and conformal triband antenna for wireless communications systems and portable devices
Published 2022“…This is achieved by connecting two open-ended stubs to a modified triangular patch radiator using PIN diodes. The antenna’s performance was optimized using a 3D electromagnetic solver and its performance was verified through measurements. …”
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A Novel MIMO antenna integrated with a solar panel and employing AI-equalization for 5G wireless communication networks
Published 2024“…We demonstrate that the directivity of this antenna array can be precisely electronically reconfigured using PIN diode switches. Additionally, we show the feasibility of integrating solar panels with the proposed MIMO antenna array. …”
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Design of microstrip ultra wide band antenna with two notch filters for wireless communication
Published 2015“…In order to add reconfigurable characteristics to the patch antenna, two copper strips are putted on the slots to represent the ON and OFF switching status of an ideal Pin diode. By using this simple switching technique, the current distribution of the patch changes and enables the antenna to have four modes of operation. …”
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A comprehensive survey on ‘‘various decoupling mechanisms with focus on metamaterial and metasurface principles applicable to SAR and MIMO antenna systems’’
Published 2020“…Such techniques include the use of defected ground structure (DGS), parasitic or slot element, dielectric resonator antenna (DRA), complementary split-ring resonators (CSRR), decoupling networks, P.I.N or varactor diodes, electromagnetic bandgap (EBG) structures, etc. …”
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Wideband and multiband antennas for multi-configuration mode applications
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Novel opto-electronic and plastic fibre sensors
Published 1998“…The middle POF is coupled to a red LED and emits light onto a flat target with the two outer fibres receiving the reflected light from the target and guiding it to two silicon PIN photodiodes. Theoretical investigations on the behaviour of the sensor are presented for ranges between 0 mm and 100 mm, and for targets with different reflectivities. …”
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Imagined cities (Voicescapes)
Published 2015“…RESEARCH QUESTIONS While the field of vocal studies has progressively emphasised the interdisciplinary potential of vocal performance (Novak, 2015; Thomaidis and Macpherson, 2015), the idea of durational/installational live singing is still a little explored subject. • How may live singing be used to create a durational, post-dramatic exhibit? …”
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Performance -
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Group of clergy leading worship around an altar
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Photograph -
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Untitled (Publicity notice board)
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Sheela Ni Gig, women's ceili band. International Women's Day, 1986
Published 1986“…Black and white photograph of Sheela Ni Gig, women's ceili band, performing at Roger Casement Irish Centre on International Women's Day 1986. Brid Boland is singing at the top left. A concert for Irish Women in support of Troops Out Movement and Irish Pensioners Appeal. …”
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Innovative UWB phase shifters using groove gap-waveguide technology inspired by metasurfaces for beamforming networks operating at 100 GHz
Published 2025“…The metasurface features a "bed-of-nails" structure, where metal pins are connected to a bottom layer and spaced <λ/4 from a top plate. …”
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Conference or Workshop Item -
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Metamaterial based ultra-wideband antennas for portable wireless applications
Published 2017“…Various approaches have been reported to reduce the physical size of RF antennas including using high permittivity substrates, shorting pins, reactive components, and more recently, metamaterials (MTM) based on composite right-/left-handed transmission-lines (CRLH-TLs). …”
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Book Section -
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Prediction of sedimentation and bank erosion due to the construction of Kahang Dam
Published 2020“…This research used the Artificial Neural Network (ANN) and ANN with Autoregressive (AR) (NNETAR) in predicting suspended sediment concentration using sediment concentration, discharge and water level as inputs. Similarly, erosion pins were installed on four transects to monitor the riverbank for thirteen months. …”
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Thesis