In this work, a single-band power amplifier (PA) with a fixed-frequency/band output matching network and multiband PA with a switch-tuned output matching network is designed, using IHP (Innovations for High Performance), 0.25 渭m-SiGe HBT process. The behavior of the amplifiers has been ...
Performance Comparison of Tri-level Switching AMB Power Amplifiers Based on Different Current Sensors and Control MethodsActive magnetic bearings are advanced bearing components for High Temperature Gas-cooled Reactors. As an important part of active magnetic bearings, switching power amplifiers are designed...
Switching power amplifiers can be based on various analog or digital, two- or three-level pulse-width modulation (PWM) methods. The paper provides a review and an in-depth theoretical analysis of 12 variants of natural sampled, uniform sampled, or hybrid sampled PWM methods. Several not previou...
To investigate the out-of-band termination effects, low pass filter (LPF) and band pass filter (BPF) type power amplifiers are designed. The LPF type shows a maximum 5 dB ACPR improvement on the BPF type. ACPR degradation by phase nonlinearity is also predicted with simple AM-to-PM ...
Gain spectra and corresponding optical signM-to-noise ratio (OSNR) for bi-directionM multi-pump Raman amplifiers are optimized and compared. Numerical resu... 刘雪明 - 《中国物理快报(英文版)》 被引量: 9发表: 2004年 Comparison of drive amplifier for piezoelectric actuators The power requirements...
Transformation networks for transistorized high-frequency power amplifiers. II Very high bandwidths can be obtained with the aid of coaxial line transformers. The performance characteristics of the coaxial line transformers are examin... Juergen Stammelbach 被引量: 0发表: 1974年 The Use of Coaxial...
traditional semiconductor materials such as silicon and significantly higher than alumina ceramics. This high thermal conductivity makes aluminum nitride ceramics particularly important in applications that require effective heat dissipation, especially in high-power LEDs, microwave devices, and power amplifiers...
The electromagnetic influence of these equipments is important for their functionality and performance. The high frequency disturbance with the frequency of 1 MHz and more influence of course also the performance of the operational amplifiers. Lot of such circuit swith the lower power consumption are ...
Switching techniques of pulse width modulation (PWM) have been popular in the area of power electronics and drive systems. PWM is commonly used in applications like motor speed control, converters audio amplifiers etc. PWM is used to adj... P Singh,A Mahor 被引量: 0发表: 2015年 Load Torqu...
To the authors' knowledge, this is the first practical verification of the superior reverse intermodulation performance of switched-mode amplifiers. 展开 关键词: UHF power amplifiers current-mode circuits intermodulation distortion radiofrequency amplifiers class A RF amplifier operation class D RF ...