Results 21 to 30 of about 37,508 (305)
Radio Frequency-Based Implantable Glucose Biosensor
International Journal of Electrochemical Science, 2022 Current implantable sensors are invasive, form fibrotic capsules, and are susceptible to a disconnection between the sensor and the controller. Here, we have developed an implantable wireless glucose monitoring system.
Jin Tan +4 more
doaj +1 more source
A Dual-Mode Highly Efficient Class-E Stimulator Controlled by a Low-Q Class-E Power Amplifier Through Duty Cycle [PDF]
, 2014 This paper presents the design flow of two high-efficiency class-E amplifiers for the implantable electrical stimulation system. The implantable stimulator is a high-Q class-E driver that delivers a sine-wave pulsed radiofrequency (PRF) stimulation ...
高明見 +1 more
core +1 more source
IEEE Access, 2022 This paper presents a wide-band multi-level switched mode class-E/F23 Power Amplifier (PA) with a reconfigurable power stage core transistor and a load with reconfigurable reactance compensation part.
Reza E. Rad +12 more
doaj +1 more source
Class-E amplifiers and applications at MF, HF, and VHF [PDF]
2017 IEEE MTT-S International Microwave Symposium (IMS), 2017 Class E amplifiers have been used in a very broad frequency range. This paper expose a general review of the basic application of class E amplifiers for lower frequencies (MF, HF, VHF), including typical components, applications, and results.
Ortega González, Francisco Javier +1 more
openaire +5 more sources
An Off-Nominal Class E Amplifier—Design Oriented Analysis [PDF]
, 2023 This paper analyses an off-nominal Class E ZVS amplifier, with an R.F. supply choke and the switch on-duty ratio D = 0.5, to identify conditions for its high-frequency and high-efficiency operation.
Miroslaw Mikolajewski
core +1 more source
Sensors, 2020 This study aims to solve a problem that exists with impedance matching networks in terms of extra cost and power loss of electronic components in a four-coil wireless power transfer (WPT) system using class E power amplifier as power supply, which is not
Feng Wen +3 more
doaj +1 more source
Load Mismatch Sensitivity of Class-E Power Amplifiers [PDF]
IEEE Transactions on Microwave Theory and Techniques, 2019 Class-E RF power amplifiers (PAs) are very power efficient under nominal operating conditions. Due to incorporating two tuned tanks, the dependence on the load impedance is, however, relatively large, resulting in, e.g., load-dependent output power, power efficiency, peak voltages, and peak (and average) currents which can lead to reliability issues ...
Ali Ghahremani +2 more
openaire +2 more sources
An approach to harmonic load- and source-pull measurements for high-efficiency PA design [PDF]
, 2004 High-efficiency power-amplifier design requires numerous efforts to investigate both input and output harmonic terminations effects. A simplified theoretical approach to clarify the relevance of such terminations is presented here, and design criteria to
Ernesto Limiti +18 more
core +1 more source
Design of a Reconfigurable Dual Mode / Dual Band Power Amplifier for Mobile Communication Systems [PDF]
Journal of Microwaves, Optoelectronics and Electromagnetic ApplicationsThis paper introduces an alternative design approach of a reconfigurable dual mode/dual band medium power amplifier for modern mobile communication systems.
Zaidoun R. Abd +2 more
doaj +2 more sources
Phase frequency characteristics evaluation for E-class devices output circuits
Физика волновых процессов и радиотехнические системы, 2022 Based on the unitarity of the E-class device circuit [S]-matrix, the phase frequency characteristics are estimated for the output circuit at any harmonic of the fundamental frequency.
Alexander V. Baranov
doaj +1 more source