352 citations · 641 across the 8 of their papers we have counts for
8 papers
A Strongly Miniaturized and Inherently Matched Folded Dipole Antenna for Narrowband Applications
Sanghamitro Das, David J. Sawyer, Nectaria Diamanti +2
A novel miniaturized printed folded dipole antenna has been designed for narrowband sensing applications. It is shown that the antenna may be systematically engineered to achieve m…
Strongly Enhanced Sensitivity in Planar Microwave Sensors Based on Metamaterial coupling
Mohammad Abdolrazzaghi, Mojgan Daneshmand, Ashwin K. Iyer
Limited sensitivity and sensing range are arguably the greatest challenges in microwave sensor design. Recent attempts to improve these properties have relied on metamaterial- (MTM…
On the Unique Determination of Modal Multiconductor Transmission-Line Properties
Stuart Barth, Ashwin K. Iyer
Some modal (or decoupled) transmission-line properties such as per-unit-length impedance, admittance, or characteristic impedance have long been held to be, in general, non-unique.…
Experimental Verification of Below-Cutoff Propagation in Miniaturized Circular Waveguides Using Anisotropic ENNZ Metamaterial Liners
Justin G. Pollock, Ashwin K. Iyer
This paper presents experimental verification of below-cutoff transmission through miniaturized waveguides whose interior is coated with a thin anisotropic metamaterial liner posse…
Anisotropic Metamaterial Optical Fibers
Dheeraj Pratap, S. Anantha Ramakrishna, Justin G. Pollock +1
Internal physical structure can drastically modify the properties of waveguides: photonic crystal fibers are able to confine light inside a hollow air core by Bragg scattering from…
Miniaturized Circular-Waveguide Probe Antennas Using Metamaterial Liners
Justin G. Pollock, Ashwin K. Iyer
This work presents the radiation performance of open-ended circular-waveguide probe antennas that have been miniaturized by the introduction of thin metamaterial liners. The liners…
Below-Cutoff Propagation in Metamaterial-Lined Circular Waveguides
Justin G. Pollock, Ashwin K. Iyer
This paper investigates the propagation characteristics of circular waveguides whose interior surface is coated with a thin metamaterial liner possessing dispersive, negative, and…
Free-Space Imaging Beyond the Diffraction Limit Using a Veselago-Pendry Transmission-Line Superlens
Ashwin K. Iyer, G. V. Eleftheriades
Focusing using conventional lenses relies on the collection and interference of propagating waves, but discounts the evanescent waves that decay rapidly from the source. Since thes…