GaN HEMT based high-efficiency current-mode class-D amplifier using chip-on-board technique

2011 ◽  
Vol 54 (2) ◽  
pp. 358-362 ◽  
Author(s):  
Jun-Chul Park ◽  
Chan-Sei Yoo ◽  
Wonshil Kang ◽  
Dongsu Kim ◽  
Jong-Gwan Yook ◽  
...  
Keyword(s):  
High Efficiency ◽  
Current Mode ◽  
Gan Hemt ◽  
Class D Amplifier ◽  
Class D

High efficiency current-mode class-D amplifier with integrated resonator

2004 ◽  
Author(s):  
Tsai-Pi Hung ◽  
A.G. Metzger ◽  
P.J. Zampardi ◽  
M. Iwamoto ◽  
P.M. Asbeck
Keyword(s):  
High Efficiency ◽  
Current Mode ◽  
Class D Amplifier ◽  
Class D

High efficiency GaN current‐mode class‐D amplifier at 2.6 GHz using pure differential transmission line filters

2013 ◽  
Vol 49 (1) ◽  
pp. 47-49 ◽  
Author(s):  
A. Sigg ◽  
S. Heck ◽  
A. Bräckle ◽  
M. Berroth
Keyword(s):  
Transmission Line ◽  
High Efficiency ◽  
Current Mode ◽  
Class D Amplifier ◽  
Class D ◽  
Differential Transmission

A High-Efficiency Cascade Multilevel Class-D Amplifier

2012 ◽  
Vol 482-484 ◽  
pp. 559-564
Author(s):  
Guo Hua Xu ◽  
Ying Zhang ◽  
Ming Dong ◽  
Lu Wei Xu
Keyword(s):  
Sliding Mode Control ◽  
Power Amplifier ◽  
High Efficiency ◽  
Sliding Mode ◽  
Mathematic Model ◽  
Total System ◽  
Mode Control ◽  
Class D Amplifier ◽  
Class D ◽  
The Individual

A switch-mode power amplifier based on a cascaded multicell multilevel circuit topology is introduced in the paper. Due to the Carrier-Based phase-shifted modulation of the individual switching cells, the output voltage ripple of the total system is considerably small. Compared with traditional class- AB amplifiers that are very poor at efficiency, the proposed amplifier has the efficiency of 90% at the smaller distortion level. A multilevel class-D amplifier’s mathematic model is analyzed. The paper lays emphasis on the design of the sliding mode control and deducts the parameters, and then develops a 2kW cascade multilevel class-D power amplifier adopting sliding mode control. The research results show that this kind of amplifier increases the system bandwidth, which provides the system with fast following performance and stability, high efficiency, and low THD value of output signals.

Current-mode class-D power amplifiers for high-efficiency RF applications

2001 ◽  
Vol 49 (12) ◽  
pp. 2480-2485 ◽  
Author(s):  
H. Kobayashi ◽  
J.M. Hinrichs ◽  
P.M. Asbeck
Keyword(s):  
Power Amplifiers ◽  
High Efficiency ◽  
Current Mode ◽  
Class D ◽  
Rf Applications

Design of high-efficiency current-mode class-D amplifiers for wireless handsets

2005 ◽  
Vol 53 (1) ◽  
pp. 144-151 ◽  
Author(s):  
Tsai-Pi Hung ◽  
A.G. Metzger ◽  
P.J. Zampardi ◽  
M. Iwamoto ◽  
P.M. Asbeck
Keyword(s):  
High Efficiency ◽  
Current Mode ◽  
Class D ◽  
Wireless Handsets
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