Results 31 to 40 of about 61,993 (309)
A COMPACT CIRCULARLY POLARIZED SLOTTED MICROSTRIP ANTENNA [PDF]
ICTACT Journal on Communication Technology, 2014 Slot antennas are often used at UHF and microwave frequencies. In slot antenna for RFID reader applications the frequency ranges from 902-923MHz to achieve circular polarization.
V. Jebaraj +2 more
doaj
, 2016 In this paper, we present a new multi-antenna modulation scheme, termed as {\em space-time index modulation (STIM)}. In STIM, information bits are conveyed through antenna indexing in the spatial domain, slot indexing in the time domain, and $M$-ary ...
Chockalingam, A. +2 more
core +1 more source
Multi-slot optical Yagi-Uda antenna for efficient unidirectional radiation to free space
, 2013 Plasmonic nanoantennas are key elements in nanophotonics capable of directing radiation or enhancing the transition rate of a quantum emitter. Slot-type magnetic-dipole nanoantennas, which are complementary structures of typical electric-dipole-type ...
Cheon, Sangmo +13 more
core +2 more sources
Quality measurements of an UWB reduced-size CPW-fed aperture antenna [PDF]
, 2015 The paper presents a characterization of a compact co-planar waveguide (CPW)-fed slot loaded low return loss planar printed antenna designed for wireless communication and ultra-wideband (UWB) applications. Following a review of the antenna design, which
Ammar, M. +5 more
core +2 more sources
Diced and grounded broadband bow-tie antenna with tuning stub for resonant tunnelling diode terahertz oscillators [PDF]
, 2016 Radiation from antennas integrated with indium phosphide (InP)-based resonant tunnelling diode (RTD) oscillators is mainly through the substrate because of the effects of the large dielectric constant.
Alharbi, Khalid Hamed +4 more
core +1 more source
A Truly S-shaped Slot-loaded Broadband Microstrip Antenna for 5G Communication
Advanced ElectromagneticsIn this paper, a compact, microstrip-fed, wideband patch antenna loaded with a novel truly S-Shaped slot structure is proposed for the 5G communication systems.
S. Goswami, S. K. Mandal, S. Banerjee
doaj +3 more sources
IEEE Access, 2020 In this paper, a novel antenna design comprising planar monopole with fractal slot defected ground structure for circularly polarized radiation is proposed. In the proposed antenna geometry, circular polarization radiation characteristics are obtained by
Yatendra Kumar +2 more
doaj +1 more source
Design and research of single‐sided slotted waveguide antenna with a large beam declination
IET Microwaves, Antennas & Propagation, 2021 The slot of the conventional longitudinal slot antenna is alternately opened on both sides of the broadside. A novel single‐sided slot array with a large‐declination (biased towards the load) is proposed, in which the slots are only biased to the same ...
Chengwei Zhao +4 more
doaj +1 more source
Design of Compact Beam-Steering Antennas Using a Metasurface Formed by Uniform Square Rings
IEEE Access, 2018 In this paper, we propose two designs of slot-fed metasurface antenna for beam steering applications. Both designs have the same two-layer stacked configuration consisting of either a single-slot or a double-slot radiator and a metasurface superstrate ...
Tanan Hongnara +3 more
doaj +1 more source
Parametric Analysis and Bandwidth Optimisation of Hybrid Linear-exponential Tapered Slot Vivaldi Antennas [PDF]
, 2018 This work presents an analysis of the effects of a hybrid linear-exponential tapered slot on the key properties of both the antipodal and co-planar Vivaldi antennas at low frequencies using parametric analysis and Nonlinear Sequential Programming ...
Gamage, Kelum A.A. +1 more
core +1 more source