Results 41 to 50 of about 10,259 (303)
A 130 to 160 GHz broadband power amplifier with binary power splitting topology
, 2022 S.442-444The range of radar and communication systems working in the atmospheric window around 140 GHz strongly is limited by the output power of the transmit amplifier. To allow for long range application, a broadband power amplifier with 145 GHz center
Diebold, S. +7 more
core +1 more source
Известия высших учебных заведений России: Радиоэлектроника, 2018 The article investigates ways to expand the dynamic range of broadband microwave receiving devices. The task is to lim-it the output signals while increasing the upper boundary of the dynamic range by the criterion of the thirdorder inter-modulation ...
S. A. Bogdanov +3 more
doaj +1 more source
A wideband cryogenic microwave low-noise amplifier
Beilstein Journal of Nanotechnology, 2020 A broadband low-noise four-stage high-electron-mobility transistor amplifier was designed and characterized in a cryogen-free dilution refrigerator at the 3.8 K temperature stage. The obtained power dissipation of the amplifier is below 20 mW.
Boris I. Ivanov +7 more
doaj +1 more source
Broadband, Continuous-Wave, Mid-Infrared Generation Based on ASE Fiber Source
Photonics, 2022 The research reports broadband, continuous-wave (CW), mid-infrared generation based on an optical parametric oscillator (OPO), pumped by an amplified spontaneous emission (ASE) fiber source.
Kaifeng Wang +5 more
doaj +1 more source
A Broadband Doherty Power Amplifier With Hybrid Class-EFJ Mode [PDF]
, 2021 This paper proposes a method that employs novel hybrid continuous class-EFJ power amplifiers (PAs) as carrier PA to design a broadband high-efficiency Doherty power amplifier (DPA). Bandwidth characteristic of the proposed DPA is analyzed in detail.
Cheng, Z +4 more
core +1 more source
Power combination of broadband TRAPATT amplifiers
Electronics Letters, 1976 The power from two closely matched trapatt amplifiers was combined by means of two 3dB interdigitated hybrid couplers. An output power of 115 W with 350 MHz bandwidth was obtained from the combined circuit. This combination technique, the effectiveness of which was thought to be questionable for trapatt amplifiers, doubles their output power without ...
P.T. Ho, A. Rosen, J. Klatskin
openaire +1 more source
A Broadband Doherty Power Amplifier for Sub-6GHz 5G Applications
IEEE Access, 2023 This paper presents a novel and accurate procedure for designing a Doherty power amplifier (DPA) for wireless systems. The method is based on a systematic approach to designing the matching networks of both Main and Auxiliary devices, which employs an ...
Mohammad Shahmoradi +4 more
doaj +1 more source
Broadband High-Efficiency Power Amplifier With Quasi-Elliptic Low-Pass Response
IEEE Access, 2020 This paper presents a broadband high-efficiency harmonic-tuned power amplifier (PA) with quasi-elliptic low-pass responses. A combination of continuous Class-F-1 and extended continuous Class-F PA modes is employed to significantly expand the design ...
Hang Chen +4 more
doaj +1 more source
Simulation of RF MEMS based matching networks and a single pole double throw switch for Multiband T/R Modules [PDF]
Advances in Radio Science, 2013 This work presents concepts and designs for two essential components of a frequency agile transmit and receive module based on Radio Frequency Micro Electro Mechanical System (RF MEMS) switches for the frequency range from 3.5 GHz up to 8.5 GHz.
S. A. Figur +4 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source