Results 21 to 30 of about 852,097 (307)
Gysel Power Divider Realized by Ridge Gap Waveguide Technology
IEEE Access, 2021 The novel ridge-gap waveguide (RGW) technology which uses a full metal structure has many advantages in micro/mm-wave frequencies such as low loss, broad bandwidth, low sensitivity to manufacturing errors, and easy integration with active components, etc.
Abbas Karimi Nobandegani +1 more
doaj +1 more source
Artificial dielectric devices for variable polarization compensation at millimeter and submillimeter wavelengths [PDF]
, 2003 Variable polarization compensation has been demonstrated at 100 GHz. The device consists of two interlocking V-groove artificial dielectric gratings that produce a birefringence that varies with the separation distance. A maximum retardance of 74/spl deg/
Blaikie, R.J. +3 more
core +2 more sources
MATERIALS' INSERTION LOSS AT THREE FREQUENCY BANDS [PDF]
Progress In Electromagnetics Research Letters, 2013 The insertion loss of different materials is measured at 2.4, 3.3 and 5.5 GHz bands. Directive antennas with a nominal gain of 19 dB are used in the measurement campaign. The height of the antennas has been selected to have the minimum possible reflection from around surfaces.
Ahmed Salih, Bazil Taha +2 more
openaire +2 more sources
Numerical and Experimental Analysis of Pressure Pulsation Attenuator Based on Helmholtz Resonator
Applied Sciences, 2023 Due to the development of aviation hydraulic systems towards high pressure and high flow, the frequency range of pressure pulsation becomes wider, and the amplitude of pulsation increases.
Shenghao Zhou +6 more
doaj +1 more source
Ultralow Loss, High Q, Four Port Resonant Couplers for Quantum Optics and Photonics [PDF]
, 2004 We demonstrate a low-loss, optical four port resonant coupler (add-drop geometry), using ultrahigh Q (>108) toroidal microcavities. Different regimes of operation are investigated by variation of coupling between resonator and fiber taper waveguides.
Rokhsari, H., Vahala, K. J.
core +1 more source
ARO-The Scientific Journal of Koya UniversityA new microstrip lowpass-bandpass diplexer with exceptional performance characteristics is designed and analyzed. It includes microstrip meandrous thin lines loaded by solid cells.
Salah I. Yahya +3 more
doaj +1 more source
Coarse wavelength division multiplexer on silicon-on-insulator for 100 GbE [PDF]
, 2015 A four-channel cascaded MZl based de-multiplexer at O-band with coarse channel spacing of 20 nm and band flatness of 13 nm is demonstrated on silicon-on-insulator.
Absil, P +4 more
core +2 more sources
Urban Science, 2020 Noise barriers are a critical part of noise mitigation in urban and rural areas. In this study, a comparison of the insertion loss calculations of noise barriers via the Finite Element Method (FEM) and various formulae (Kurze–Anderson, ISO 9613-2/Tatge ...
Nikolaos M. Papadakis +1 more
doaj +1 more source
ARO-The Scientific Journal of Koya University, 2020 branch-line microstrip coupler is designed and fabricated in this paper. The proposed coupler operates at 3 GHz, which is suitable for WiMAX applications.
Sayed M. Hosseini, Abbas Rezaei
doaj +1 more source
Improved insertion-loss tester [PDF]
, 1964 An improved test method accurately measures the insertion loss of RF components while avoiding amplifier drift. Currents are balanced across a bridge transformer with shorted probes and then with each component to be tested.
Finnie, C. J., Schuster, D.
core +1 more source