Zobrazeno 1 - 10
of 129
pro vyhledávání: '"Jim Wight"'
An Active Bandpass Filter for LTE/WLAN Applications Using Robust Active Inductors in Gallium Nitride
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 68:2252-2256
This brief demonstrates the performance of the first active bandpass filter to implement an active inductor in gallium nitride (GaN) technology. Fabrication of the filter and inductor was done using a 0.5 $\mu \text{m}$ pHEMT GaN process with the sys
Publikováno v:
IEEE Transactions on Antennas and Propagation. 67:2008-2011
A novel low-profile grooved-dielectric choke ring with dual-band surface impedance resonance is proposed and experimentally demonstrated. The proposed structure is designed by engineering the surface impedance of a dielectric-based choke ring to intr
Autor:
Jim Wight
Publikováno v:
The Veterinary record. 185(13)
As the son and authorised biographer of Alf Wight (aka James Herriot), and one who worked alongside him in general practice for over 25 years, I feel well qualified to respond to the recent criticisms of his legacy levelled by members of his professi
Autor:
Heather Lambert, Shaun Hiu, Malcolm Coulthard, John N S Matthews, Ruth Wood, Jean Crosier, Rachel Agbeko, Thomas Brick, Heather Duncan, David Grant, Quen Mok, Andrew Gustaf Nyman, John Pappachan, Paul Wellman, Chris Boucher, Joe Bulmer, Denise Chisholm, Kirsten Cromie, Victoria Emmet, Richard Feltbower, Michael Grayling, Rebecca Harrison, Eva-Maria Holstein, Ciara A Kennedy, Elaine McColl, Kevin Morris, Lee Norman, Julie Office, Roger Parslow, Christine Pattinson, Shriya Sharma, Jonathan Smith, Alison Steel, Rachel Steel, Jayne Straker, Lamprini Vrana, Jenn Walker, Mike Whitaker, Jim Wightman, Nina Wilson, Lucy Wirz
Publikováno v:
Efficacy and Mechanism Evaluation, Vol 11, Iss 01 (2024)
Abstract Background Critically unwell babies in intensive care units may develop acute renal failure. Options for renal replacement therapy are limited by their small size and available technology. Objectives To determine the clinical efficacy, outco
Externí odkaz:
https://doaj.org/article/954cf88ad8224311987f30e8bc5d1a16
Publikováno v:
2018 18th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM).
An active phaser based on co-directional couplers is proposed for achieving a flat magnitude transmission while preserving its strong dispersive delay response. The phasers are realized using Half-Mode Substrate Integrated Waveguide (HMSIW) structure
Publikováno v:
2018 International Applied Computational Electromagnetics Society Symposium (ACES).
An active microwave C-section phaser is proposed which provides a flat magnitude transmission in a wide frequency band along with a frequency-dependent group delay response considering practical dissipation losses. The key lies in integrating a const
Publikováno v:
12th European Conference on Antennas and Propagation (EuCAP 2018).
A novel low-profile dual-band tunable artificial magnetic conductor (AMC) structure based on the choke ring is presented in this paper. The structure is tuned to the Global Navigation Satellite System (GNSS) frequencies of L2 (1227.60 MHz) and L1 (15
Publikováno v:
Microwave and Optical Technology Letters. 57:1455-1459
This article proposes the use of inductors suspended in air to increase the self-resonance frequency and quality factor of inductors used in high-frequency lumped MMIC designs. This technique is compatible with MMIC processes having airbridges with n
Publikováno v:
IEEE Microwave Magazine. 16:104-110
This article presents the development of a nonlinear model for a microwave gallium indium phosphide (GaInP)/gallium arsenide (GaAs) heterojunction bipolar transistor (HBT). This model tied for first prize in the Microwave Transistor Modeling student
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 63:244-255
This paper presents two different types of high-power gallium–nitride (GaN) phase shifters designed for X-band (8–12 GHz), but offering good performance over a much wider band. The first is a 22.5 $^{\circ}$ switched-filter phase shifter, which h