Analysis and Measurement of Two Tone intermodulation distortion in Wideband Power Amplifier
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2015 by IJETT Journal|
|Year of Publication : 2015|
|Authors : Rajbir Kaur, M.S. Patterh
|DOI : 10.14445/22315381/IJETT-V29P235|
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
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.
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Behavioral Model, Gain compression, Inter modulation distortion, Memory effects.