Analysis and Measurement of Two Tone intermodulation distortion in Wideband Power Amplifier
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International Journal of Engineering Trends and Technology (IJETT) | 
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| © 2015 by IJETT Journal | ||
| Volume-29 Number-4 |
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| Year of Publication : 2015 | ||
| Authors : Rajbir Kaur, M.S. Patterh |
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| DOI : 10.14445/22315381/IJETT-V29P235 |
Citation
Rajbir Kaur, M.S. Patterh"Analysis and Measurement of Two Tone intermodulation distortion in Wideband Power Amplifier", International Journal of Engineering Trends and Technology (IJETT), V29(4),189-191 November 2015. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Abstract
Wideband power amplifiers (PAs)
generally have large memory effect and high
nonlinearity. In non-linearity, Inter modulation
distortion (IMD) is an important metric. For a wide
range of RF components, the usual AM-AM and AMPM
data cannot properly describe the large
distortion characteristics. So an accurate amplifier
behavioral modeling method based on two-tone
transfer characteristics is presented, which is quite
useful to analyze memory effects for third and fifth
order harmonic in terms of intercept points, and
these are calculated using the harmonic balance
test. PA gain for harmonic level simulation and
circuit level simulation is calculated. The memory
effects are analyzed up to 5th order and the
dominance of memory effects in third order has been
verified with the simulation results.
References
[1] Hyunchul Ku, J. Stevenson Kenney, “Behavioral modeling
of nonlinear RF power amplifiers considering memory
effects, IEEE transactions on microwave theory and
techniques, vol 51, pp. 2495-2503, 2003.
[2] P. B. Kenington, High-linearity RF amplifier design,
Artech House, Boston, London, 2000.
[3] F. H. Raab, P. Asbeck, S. Cripps, P. B. Kenington, Z. B.
Popovic, N. Pothecary, J.F. Sevic, N. O. Sokal, “Power
amplifiers and transmitters for RF and microwave,” IEEE
Transactions on Microwave Theory and Techniques, vol.
50, pp. 814–826, Mar. 2002.
[4] Singla, R., & Sharma, S., ?Digital predistortion of power
amplifiers using look-up table method with memory effects
for LTE wireless systems, EURASIP Journal on Wireless
Communications and Networking, pp. 1-8, 2012.
[5] H. Ku, M. D. McKinley, and J. S. Kenney, ?Quantifying
memory effects in RF power amplifiers, IEEE Trans.
Microwave Theory Tech., vol. 50, pp. 2843–2849, Dec.
2002.
[6] N. Borges De Carvalho and J. C. Pedro, “Two-tone IMD
asymmetry in microwave power amplifiers, IEEE MTT-S
Int. Microwave Symp. Dig, pp. 445–448, 2000.
[7] H. Ku, M. D. Mckinley, and J. S. Kenney, ?Extraction of
accurate behavioral models for power amplifiers with
memory effects using two-tone measurements, IEEE
MTT-S Int. Microwave Symp. Dig., pp.139–142, 2002.
[8] D. Wisell, M. Isaksson and N. Keskitalo, ?A general
evaluation criteria for behavioral power amplifier
modeling, in ARFTG 69, Honolulu, USA, pp. 251-255,
2007.
[9] S. C. Cripps, RF Power Amplifiers for Wireless
Communications, 2nd ed. Boston: Artech House, 2006.
Keywords
Behavioral Model, Gain compression,
Inter modulation distortion, Memory effects.