An MMIC smart power amplifier of 21% PAE at 16 dBm power level for W-CDMA mobile communication terminals

2003 ◽  
Author(s):  
J.H. Kim ◽  
J.H. Kim ◽  
Y.S. Noh ◽  
Y.S. Kim ◽  
S.G. Kim ◽  
...  
Keyword(s):  
Power Amplifier ◽  
Mobile Communication ◽  
Power Level ◽  
Smart Power

Realization of a 30-W highly efficient and linear reconfigurable dual-band power amplifier using the continuous mode approach

2013 ◽  
Vol 6 (2) ◽  
pp. 115-128 ◽  
Author(s):  
Vincenzo Carrubba ◽  
Stephan Maroldt ◽  
Markus Mußer ◽  
Herbert Walcher ◽  
Friedbert Van Raay ◽  
...  
Keyword(s):  
Power Amplifier ◽  
Continuous Wave ◽  
Second Harmonic ◽  
Power Level ◽  
Dual Band ◽  
Power Efficient ◽  
Frequency Bands ◽  
Class Ab ◽  
Output Performance ◽  
Band Power

This paper presents the design methodology and the realization of a highly linear and power-efficient reconfigurable dual-band amplifier based on the continuous/Class-ABJ approach. The Class-ABJ theory allows presenting different reactive solutions on both fundamental and second harmonic terminations compared with the standard Class-AB mode. Despite the various terminations, a constant optimum output performance in terms of power, gain, and efficiency can still be achieved. The output impedances are then translated into frequency thus allowing the realization of broadbandpower amplifiers(PAs) at high-power level of 30 W. In this work, the Class-ABJ broadband approach will be used for the realization of a reconfigurable dual-band power amplifier operating in the two frequency bands 2.1–2.2 and 2.5–2.6 GHz. Continuous wave (CW) measurements on the realized PA show power and efficiency greater than 17 W and 55% in the two frequency bands with peak values up to 30 W and 63.7%. Indeed, it is shown that such novel modes can be predistorted and therefore the linearity requirement can also be met.

Power level-dependent dual-operating mode LDMOS power amplifier for CDMA wireless base-station applications

2005 ◽  
Vol 53 (2) ◽  
pp. 739-746 ◽  
Author(s):  
Younkyu Chung ◽  
Jinseong Jeong ◽  
Yuanxun Wang ◽  
D. Ahn ◽  
T. Itoh
Keyword(s):  
Power Amplifier ◽  
Power Level ◽  
Operating Mode ◽  
Base Station

A Highly Extended High-Efficiency Range Class-F–C Doherty Power Amplifier

2019 ◽  
Vol 29 (09) ◽  
pp. 2050152
Author(s):  
Kayvan Ahmadi ◽  
Massoud Dousti ◽  
Shahrooz Asadi
Keyword(s):  
Power Amplifier ◽  
High Efficiency ◽  
Continuous Wave ◽  
Power Level ◽  
Output Power Level ◽  
Large Signal ◽  
Wave Measurements ◽  
Doherty Power Amplifier ◽  
Code Division Multiple ◽  
Class F

This paper presents a new extended high-efficiency-range Doherty power amplifier (DPA) with a main and only a single auxiliary amplifier. In order to extend the output high-efficiency range with a high-efficiency level, asymmetrical cells are employed as the main and auxiliary amplifiers in class-F and class-C complex combining load (CCL) methodology, respectively. To verify the proposed methodology, a DPA with 12-dB output back-off (OBO) is designed and fabricated for wideband code division multiple access (WCDMA) applications. Large-signal continuous-wave measurement results show the power gain of about 11[Formula: see text]dB with a drain efficiency of 59.9% at 12[Formula: see text]dB of OBO. A two-tone test exhibits a third-order intermodulation distortion (IMD) of lower than [Formula: see text][Formula: see text]dBc. Modulated wave measurements show over 55% of average drain efficiency and an adjacent channel leakage power ratio (ACLR) of lower than [Formula: see text][Formula: see text]dBc at an output power level of 31.5[Formula: see text]dBm.

UHF band high-efficiency linear power amplifier for mobile communication satellites

1990 ◽  
Vol 26 (7) ◽  
pp. 441
Author(s):  
K. Sekine ◽  
Y. Dooi ◽  
A. Iso ◽  
H. Funaki ◽  
I. Takei
Keyword(s):  
Power Amplifier ◽  
Mobile Communication ◽  
High Efficiency ◽  
Linear Power Amplifier ◽  
Uhf Band

scholarly journals A Spur-Reduced Multimode Power-Level Tracking Power Amplifier Using a Frequency-Hopping DC–DC Converter

2010 ◽  
Vol 58 (5) ◽  
pp. 1333-1338 ◽  
Author(s):  
Jau-Horng Chen ◽  
Pang-Jung Liu ◽  
Yu-Ling Hung ◽  
Hao-Shun Yang ◽  
Yi-Jan Emery Chen
Keyword(s):  
Power Amplifier ◽  
Power Level ◽  
Frequency Hopping
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