The Design and Implementation of Revise System on Frequency Response about Power Amplifier of Shortwave Transmitter

Hong Chang Shan; Jun Gao; Xiao Xu Qu; Xi Gan

doi:10.4028/www.scientific.net/AMM.719-720.1093

Paper Titles

An Improved Frequency-Shift Compression Method Based on Auto Energy Gain Compensation for Digital Hearing Aids
p.1068

A Method of Wide Dynamic Range Compression Based on Curve Compression Applying on Hearing Aids
p.1074

A Multiband Noise Reduction Wiener Filter Algorithm for Hearing Aid
p.1082

Numerical Calculation of NMR Response for the 3D Digital Core Constructed with CT Images of the Tight Rock
p.1089

The Design and Implementation of Revise System on Frequency Response about Power Amplifier of Shortwave Transmitter
p.1093

The Limitation of Maximum Detectable Deformation Resolved by Differential SAR Interferometry
p.1101

The Evaluation of COAs Based on Stochastic Interval Weighted Sum Method
p.1108

A Cascade Tracking Loop for Weak GPS Signals
p.1116

Airport Runway FOD Detection from LFMCW Radar and Image Data
p.1124

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 719-720The Design and Implementation of Revise System on...

The Design and Implementation of Revise System on Frequency Response about Power Amplifier of Shortwave Transmitter

Abstract:

A revise system on frequency response based on power amplifier of shortwave transmitter is designed to solve the problem of nonlinear response at different frequencies on power amplifier. This system is able to guarantee the output of power amplifier to fluctuate slightly around the rated power though the two processes named pre-revise on frequency response of power amplifier and current revise on frequency response of power amplifier. A modified variable step and multi-rate updated LMS algorithm is put into use to reduce the calculated amount and boost the rate of the revise. It is demonstrated by experiment that the revise system of this paper is able to guarantee the output of power amplifier around the rated power with the deviation of dB at a high convergence rate.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 719-720)

Pages:

1093-1100

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.719-720.1093

Citation:

Cite this paper

Online since:

January 2015

Authors:

Hong Chang Shan, Jun Gao, Xiao Xu Qu, Xi Gan

Keywords:

Convergence Rate, Modified Variable Step, Multi-Rate Updated LMS Algorithm, Nonlinear Response, Power Amplifier, Revise on Frequency Response

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Zhijie Ren, Guoqing Wang, Lin Quan. The principle and maintenance of MT2000 2kw shortwave transmitter[J]. The information of radio and television, 2009, 9(7): 80-83.

Google Scholar

[2] Jones D L, Baraniuk R G. An adaptive optimal-kernel time-frequency representation[J]. IEEE Transactions on Signal Processing, 1995, 43(10): 2361-2371.

DOI: 10.1109/78.469854

Google Scholar

[3] Chengfang Liao, Diping Chen, Xuejun Li etc. Linear power amplifier with adaptive control repeater[J]. Micro computer information, 2008, 24(5): 291-292.

Google Scholar

[4] Dawei Shen, En He, Zhengyu Li, Weiguo Zhao. An improved modified variable step and multi-rate updated LMS algorithm and simulation[J]. Electronic quality, 2010, 12(12): 11-15.

Google Scholar

[5] Cheng Liu, Xiangdong Liu, Li Li. The design and application of RS – 422 serial communication in DSP[J]. Industrial control computer, 2006, 19(3): 33-34.

Google Scholar

[6] Widrow B, Mccool J M, Larimore M G, Stationary and nonstationary learning characterstics of the LMS adaptive filter[J]. Proc IEEE, 1976, 64(8): 1151-1162.

DOI: 10.1109/proc.1976.10286

Google Scholar