We present the design and experimental implementation of a power harvesting metamaterial. A maximum of 36.8% of the incident power from a 900 MHz signal is experimentally rectified by an array of metamaterial unit cells. We demonstrate that the maximum harvested power occurs for a resistive load close to 70 X in both simulation and experiment. The power… (More)
We present an experimental demonstration of phase conjugation using nonlinear metamaterial elements. Active split-ring resonators loaded with varactor diodes are demonstrated theoretically to act as phase-conjugating or time-reversing discrete elements when parametrically pumped and illuminated with appropriate frequencies. The metamaterial elements were… (More)
Articles you may be interested in Tunable microwave impedance matching to a high impedance source using a Josephson metamaterial Appl. Ultra-broadband electromagnetically induced transparency using tunable self-asymmetric planar metamaterials Induced strain mechanism of current collapse in AlGaN/GaN heterostructure field-effect transistors Appl. Depletion… (More)
—We present the design and experimental implementation of an RF limiter metamaterial using a sheet of nonlinear metamaterials. We demonstrate that complementary electric in-ductive-capacitive resonators loaded with nonlinear p-in diodes can act as RF limiter unit cells. We design and fabricate limiter metamaterials and compare them to traditional circuit… (More)
We present simulation and experimental results demonstrating the effectiveness of phase conjugation or, equivalently, time reversal metamaterials for imaging applications. Split-ring resonators are loaded with varactor diodes to enable straightforward, easy-to-fabricate phase conjugation metamaterial unit cells. These cells are improved upon to allow either… (More)
Articles you may be interested in A frequency and bandwidth tunable metamaterial absorber in x-band Ferrite based metamaterials with thermo-tunable negative refractive index Appl.
Commercialized, low C-SWAP (Cost, Size, Weight and Power), software defined communications apertures will substantially increase network capacity in future 5G wireless networks. We advocate using high gain, electronically steerable antennas for small cell radio access networks, backhaul and millimeter wave applications. The steerable beam functionality can… (More)
Metamaterials have gained extensive attention in recent years due to their ability to exhibit material properties otherwise difficult or impossible to obtain using natural materials. Nonlinear and active metamaterials in particular exhibit great promise for exploring new effects and applications, from tunability to mixing. However, nonlinear and active… (More)