This article proposes a class of ultra-wideband 3-D microwave absorbers with composite slotlines and microstrip lines from synthetic design to practical implementation. Firstly, the general equivalent transmission line (TL) model proposed absorber element is formed based on two sets shunt short-ended stubs an i-section nonuniform connecting line. Then, procedure theoretically investigated using...

We introduce a microwave submillimeter-wave detector based on an integrated micromesh absorber and superconducting kinetic inductance thermometer on a through-wafer released sub-micron thick membrane. Equilibrium operation achieved by thermal isolation through the membrane geometry enables operation at elevated thermal bath temperatures of 5–10 K. The bolometer operates in a phonon-noise limite...

In previous work we have proposed utilizing Photonic Band Gap (PBG) structures as a new class of high-energy, high-intensity accelerator cavities. We have completed extensive MAFIA numerical calculations of multicell PBG structures, with each cell consisting of a square array of metal cylinders terminated by conducting sheets and surrounded by microwave absorber on the periphery. We find that o...

Controlling stray light at millimeter wavelengths requires special optical design and selection of absorptive materials that should be compatible with cryogenic operating environments. While a wide exists, these typically exhibit high indices refraction reflect/scatter significant fraction before absorption. For many lower index such as commercial microwave absorbers, their applications in envi...

Related Articles Excitation of a high-Q subradiant resonance mode in mirrored single-gap asymmetric split ring resonator terahertz metamaterials Appl. Phys. Lett. 101, 071108 (2012) Towards left-handed metamaterials using single-size dielectric resonators: The case of TiO2-disks at millimeter wavelengths Appl. Phys. Lett. 101, 042909 (2012) Negative refraction and partial focusing with a crosse...

Related Articles New equipment for microwave electric field visualization Rev. Sci. Instrum. 83, 074704 (2012) Frequency-dispersive resistance of high impedance surface absorber with trapezoid-coupling pattern J. Appl. Phys. 112, 014106 (2012) Extremely high extinction ratio terahertz broadband polarizer using bilayer subwavelength metal wire-grid structure Appl. Phys. Lett. 101, 011101 (2012) ...

A novel hierarchical heterostructure of Ni microspheres-CuO nano-rices was fabricated using a simple two-step process. The CuO rices were densely deposited on the surfaces of Ni microspheres. The phase purity, morphology, and structure of composite heterostructures are characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectros...

The objectives of the nonionizing radiation research program are as follows: (1) to develop microwave exposure systems for bioeffects research; (2) to develop and test techniques for measuring microwave energy absorption; (3) to determine the effect of microwaves on isolated nerve preparations; (4) to determine how 2450 MHz microwave radiation interacts with biological systems at all levels; (5...