Results 31 to 40 of about 73,972 (294)

Effect of frequency modulation on impedance matching of single ferrite in ICRH antenna system

open access: yesHe jishu, 2022
BackgroundIon cyclotron resonance heating (ICRH) is an important auxiliary heating method in tokamak. When fast plasma phenomena such as L-H mode transitions and edge localized modes (ELM), etc., happens, a large change in the antenna coupling impedance ...
YANG Kaijian   +6 more
doaj   +1 more source

Gate reflectometry of single-electron box arrays using calibrated low temperature matching networks

open access: yesScientific Reports, 2022
Sensitive dispersive readouts of single-electron devices (“gate reflectometry”) rely on one-port radio-frequency (RF) reflectometry to read out the state of the sensor.
Matthew J. Filmer   +7 more
doaj   +1 more source

Measurement of Efficiency Degradation Due to External Detuning of a Tunable Patch Antenna [PDF]

open access: yes, 2016
Realistic deployment scenarios for narrow-band mobile terminal antennas can place the antenna in close proximity to sources of detuning such as the user’s hand.
Beach, Mark A   +2 more
core   +2 more sources

An Impedance Matching Method Based on Optimized BP Neural Network for Vehicular Power Line System

open access: yesIEEE Access
During the operation of the vehicular power line system, the loads are randomly connected and subsequently disconnected. This can result in an impedance mismatch of the vehicular power line system, which in turn has a significant impact on the normal ...
Renfa Song, Hanyan Li, Yongtao Li
doaj   +1 more source

A W-Band Amplifier With a New Wide-Band Interstage Matching Technique Using Self-Resonance of a Microstrip-Coupled Line

open access: yesIEEE Access, 2022
A new interstage matching technique is presented for design of a wide-band multi-stage amplifier using commercial 60 nm GaN-on-silicon technology in the W-band.
Sunwoo Lee   +4 more
doaj   +1 more source

A three-dimensional backward-wave network matched with free space

open access: yes, 2007
A backward-wave slab based on a capacitively and inductively loaded three-dimensional transmission-line network is designed in such a way that impedance-matching with free space is obtained.
Alitalo   +11 more
core   +1 more source

Fully integrated CMOS power amplifier design using the distributed active-transformer architecture [PDF]

open access: yes, 2002
A novel on-chip impedance matching and power-combining method, the distributed active transformer is presented. It combines several low-voltage push-pull amplifiers efficiently with their outputs in series to produce a larger output power while ...
Aoki, Ichiro   +3 more
core   +1 more source

On-Chip Matching Networks for Radio-Frequency Single-Electron-Transistors

open access: yes, 2007
In this letter, we describe operation of a radio-frequency superconducting single electron transistor (RF-SSET) with an on-chip superconducting LC matching network consisting of a spiral inductor L and its capacitance to ground.
A. J. Rimberg   +7 more
core   +1 more source

Dependence of microwave absorption properties on ferrite volume fraction in MnZn ferrite/rubber radar absorbing materials

open access: yes, 2011
We report the analysis of measurements of the complex magnetic permeability ($\mu_r$) and dielectric permittivity ($\epsilon_r$) spectra of a rubber radar absorbing material (RAM) with various MnZn ferrite volume fractions.
Dantas, Christine C.   +2 more
core   +1 more source

A new impedance matching method for an ultra-wide band and dual circularly polarised feed [PDF]

open access: yes, 2016
In traditional antenna design, metal components are not placed in the central part of the antenna as they change the characteristics of near field radiation.
Chen, Zhi Jun   +6 more
core   +1 more source

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