An Orthogonal Frequency Division Multiplexing (OFDM) over fiber based Passive Optical Network (PON) is proposed to cater high data rates to densely populated users in an organization such as a university campus. Performance ...
In this paper, a simple hybrid radio-over fiber network that can transmit a different quadrature amplitude modulated (QAM) signals simultaneously over a 50-km fiber link is investigated. Simulation results indicate that a ...
The paper proposes a 720 Mbps visible light communication (VLC) system using 64-QAM-OFDM signals. Transmission of signals is achieved by modulating red, green and blue (RGB) light emitting diodes (LEDs) and transmitting ...
An analysis to investigate the performance of various polygonal shaped patch antennas is presented here in this paper. The comparative analysis is based on the simulation results generated by full wave simulation software ...
The effect of hexagonal slot in probe-fed hexagonal shaped patch antenna with reduced ground plane is proposed, analyzed and studied. In this paper, experimental and simulation results for a probe-fed proposed antenna ...
In this paper, a complimentary split ring resonator (CSRR) enhanced wideband log-periodic antenna with coupled microstrip line feeding is presented. Here in this work, coupled line feeding to the patches is proposed to ...
The paper presents a probe fed slotted hexagonal patch antenna and emphasizes on antenna performance after suppression of a spurious radiation. To suppress the spurious radiation two complementary split ring resonators ...
Vertex-fed hexagonal planar antennas excite higher order modes. Monopole like radiation characteristics may be achieved through ground plane reduction. The paper presents the effect of reduced ground plane (RGP) which may ...
In this paper, squinted beams generated due to presence of higher mode in hexagonal patch antenna at 5.5 GHz are converged to form a fundamental mode radiation pattern using conical and hemispherical dielectric lens. The ...
A probe-fed circularly polarized hexagonal patch antenna with dual feed configuration is designed and presented for analyzing amplitude and phase sensitivity. The hexagonal patch antenna is excited with a fundamental ...
In this paper, design methodology of a frequency reconfigurable probe-fed hexagonal patch antenna with a hexagonal annular ring has been discussed using a varactor diode as the tuning element. The proposed technique is ...
Analysis of an optical wireless communication (OWC) system based on visible light communication (VLC) applied for vehicle-to-vehicle (V2V) communication is presented here. The theoretical investigation assumes arrays of ...
This paper demonstrates the effect on equivalent circuit modeling of a square loop artificial magnetic conductor (AMC) when strip width of one of the edge of the loop is varied. The unit cell dimensions, the inter-element ...
In this article, two types of band stop frequency selective surfaces (FSSs) based on infinitely large array of translated crossed dipole and square loop (SL) unit elements are presented and further, compared. The impact ...
Planar hexagonal monopole antennas are often limited to uneven gain at the antenna boresight especially when the impedance bandwidth covers Sub-6 GHz frequencies. Direct-fed hexagonal antennas rarely achieve wider bands. ...
This paper presents a frequency selective surface (FSS) based simple and efficient technique to mitigate the electromagnetic (EM) interference in terahertz (THz) integrated circuits (ICs). Three dimensional FSS array of ...
In this paper, a cubic dielectric resonator antenna (CDRA) with patterned structure fed through a microstrip line using gold is proposed. Geometry-induced resonant frequency is synthesized with cuboid periodic pattern ...
Singhal, Rahul(The SAO/NASA Astrophysics Data System, 2010-11)
Polymer residues are generally left in the Y-junctions of the conventional splitters. Besides increased insertion loss, the Y-junction residue results in asymmetric distribution of power at device outputs. An analysis of ...
Singhal, Rahul(SAO/NASA Astrophysics Data System, 2011-09)
We present fabrication of optical waveguides in a photosensitive polymer. The process to fabricate monomode polymeric channel waveguides using simple direct ultraviolet (UV) photolithography is optimized. Channel waveguides ...
Single-mode small-core (∼2 μm × 2 μm) Y-branch waveguide structures in photosensitive polymer have been fabricated. Y-branch waveguides are designed by the beam propagation method and Y-branch waveguides are obtained on ...