A 3.4 V, 1 watt cellular DAMPS GaAs MESFET power amplifier with 50% efficiency

2002 ◽  
Author(s):  
S.S. Taylor
Keyword(s):  
Power Amplifier ◽  
Gaas Mesfet

Improvement of Carrier Power to Third-Order Intermodulation Distortion Power Ratio for a Power Amplifier at 5.25 GHz using LINC Method

2018 ◽  
Vol 12 (1) ◽  
pp. 34-40
Author(s):  
Said Elkhaldi ◽  
Naima Amar Touhami ◽  
Mohamed Aghoutane ◽  
Taj-eddin Elhamadi
Keyword(s):  
Power Amplifier ◽  
Artificial Neural Network Model ◽  
Power Ratio ◽  
Linear Amplification ◽  
Third Order ◽  
Gaas Mesfet ◽  
Constant Envelope ◽  
Modulation Signal ◽  
Low Efficiency ◽  
Nonlinear Components

Introduction:This paper focuses on improving the power amplifier linearity for wireless communications. The use of a single branch of a power amplifier can produce high distortion with low efficiency.Method:In this paper, the Linear Amplification with Nonlinear Components (LINC) technique is used to improve the linearity and efficiency of the power amplifier. The LINC technique is based on converting the envelope modulation signal into two constant envelope phase-modulated baseband signals. After amplification and combining the resulting signals, the required linear output signal is obtained. To validate the proposed approach, LINC technique is used for linearizing an amplifier based on a GaAs MESFET (described by an artificial neural network Model).Conclusion:Good results have been achieved, and an improvement of about 40.80 dBc and 47.50 dBc respectively is obtained for the Δlower C/I and Δupper C/I at 5.25 GHz.

A 6-GHz Four-Stage GaAs MESFET Power Amplifier (Short Papers)

1976 ◽  
Vol 24 (6) ◽  
pp. 381-383 ◽  
Author(s):  
Y. Arai ◽  
T. Kouno ◽  
T. Horimatsu ◽  
i. Komizo
Keyword(s):  
Power Amplifier ◽  
Gaas Mesfet

Biasing Circuit for Microwave GaAs MESFET Power Amplifier

1990 ◽  
Vol 7 (2) ◽  
pp. 140-143
Author(s):  
K D Patil ◽  
M Samuel ◽  
V G Kanade ◽  
S Mahapatra
Keyword(s):  
Power Amplifier ◽  
Gaas Mesfet

U-band monolithic millimetre-wave GaAs MESFET power amplifier

1992 ◽  
Vol 28 (23) ◽  
pp. 2182 ◽  
Author(s):  
T. Ho ◽  
K. Pande ◽  
F. Phelleps ◽  
J. Singer ◽  
P. Rice ◽  
...  
Keyword(s):  
Power Amplifier ◽  
Millimetre Wave ◽  
Gaas Mesfet
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