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Novel concentric hexagonal-shaped RFID tag antenna with T-shaped stub matching
Published 2022“…This paper presents a unique concentric hexagonal-shaped ring antenna for radio frequency identification (RFID) tags. …”
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82
High-gain end-fire bow-tie antenna using artificial dielectric layers
Published 2015“…By loading the antenna with a 2 × 5 array of enhanced end-coupled split-ring (EECSR) unit-cells results in significant enhancement in the antenna gain performance. …”
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83
Super-wideband antenna with multiple notched-band functionality through L-X bands
Published 2022“…The proposed antenna comprises a standard circular patch which is loaded with various slot artifacts that include multiple split-ring resonators (SRR), a rotated Gamma-shaped slot, and embedded in the feedline is a rotated S-shaped slot. …”
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84
Nanoparticle-coated Vivaldi antenna array for gain enhancement
Published 2023“…This is achieved by loading the antenna with Complementary Split Ring Resonators (CSRR) and periodic array of open loop meander-line unit cells. …”
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85
A multi-beam circularly polarised Fabry-Perot resonator antenna array using SIW for X-Band applications
Published 2025“…This paper presents a novel multi-layer beamforming antenna array based on Fabry-Perot resonator that is excited by a high performance compact 4 × 4 Butler matrix using substrate integrated waveguide SIW) technology for X-band application. The adapted ring patch antenna is fed through the aperture on a rectangular SIW cavity and forms the radiating element in the antenna array. …”
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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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Thesis -
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Synthesis and structural analysis of [alpha]-aminophosphonic acids and their phosphonate ester derivatives
Published 1996“…The effects of the aromatic ring currents exerted by the extended aromatic substituents were investigated. …”
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Studies of 1,2-naphthoquinone mono-oximato complexes
Published 1991“…The oxidation involved oxidative cleavage of the aromatic ring of catechol by molecular oxygen to give muconic acid anhydride and 2H-pyran-2-one in addition to benzoquinone. …”
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Thesis -
97
Novel narrowband microstrip filters for wireless communications systems
Published 2010“…The various ‘C-shape’ open-loop ring resonators were developed and fabricated, namely ‘Embedded-Square’ and ‘Embedded-Triangle’ resonators, exhibited a quasielliptic function bandpass filter response free from spurii across an ultra-wide bandwidth. …”
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Thesis -
98
Studies of complexes derived from 5-acetylamino-1,2-benzoquinone 2-oxime and related ligands
Published 1991“…For all complexes i.r. studies indicate the involvement of the ring CO in bonding. Their electronic spectra show strong absorption in the u.v. region which tails into the visible but d - d transitions have been clearly Identified for Ni(5-Acqo)2.6H20 and Mn(5-Acqo)3 .H20. …”
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Thesis -
99
Untitled (Publicity notice board)
“…Black and white photograph showing three posters pinned to a wall under the sign 'Publicity'. Photographer unknown.…”
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100
High-gain metasurface in polyimide on-chip antenna based on CRLH-TL for sub-terahertz integrated circuits
Published 2020“…Concentric dielectric-rings are etched in the ground-plane under the radiation patches implemented on the top-layer. …”
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