Identification of RF Power Amplifier Memory Effect Origins using Third-Order Intermodulation Distortion Amplitude and Phase Asymmetry

Kenney, J.S.; Fedorenko, P.

doi:10.1109/mwsym.2006.249387

Cited by 40 publications

(13 citation statements)

References 10 publications

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“…In this study, the Unit Delay Memory Polynomial modelling (MPM- [18]) technique was used to get the model of PA. Mathematical representation of model is given in (1).…”

Section: Fig 8 Phase Error After Calibrationmentioning

confidence: 99%

“…In order to get maximum power, PA is derived near saturated power. Inherently generated intermodulation (IMD) signals in all PA which is derived near P1dB deteriorate the adjacent channel interference (ACI) and transmitter efficiency for the PA using in wireless system [1]. Modern communication systems have special standards like IEEE802.11ac.…”

Section: Introductionmentioning

confidence: 99%

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Effect of the Base-band Measurement Setup Errors on DPD Performance and Elimination Procedure

Yüzer

Şanlı

2017

AEM

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In this study, the effect of base-band measurement setup errors on DPD performance was investigated and a calibration procedure is developed to eliminate the measurement errors. A base-band measurement setup is prepared at laboratory with instruments and then the data which is measured and the deteriorating effect of errors on Digital Predistortion (DPD) linearization performance are investigated. In order to eliminate deteriorating effect of this error a three steps calibration procedure is developed. Before and after calibration application DPD performance is measured. It is showed both in simulation and experimentally that the calibration procedure improved the DPD system linearization performance from 10 dB to 26dB and 13dB to 20dB, respectively.

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“…In this study, the Unit Delay Memory Polynomial modelling (MPM- [18]) technique was used to get the model of PA. Mathematical representation of model is given in (1).…”

Section: Fig 8 Phase Error After Calibrationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of the Base-band Measurement Setup Errors on DPD Performance and Elimination Procedure

Yüzer

Şanlı

2017

AEM

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“…For the evaluation of asymmetry between different distortion products, 3D energy surfaces are used [7]. 3D energy surfaces have been previously used to study the memory effects that contribute to the asymmetry between upper and lower IM products [9], as a function of frequency spacing and input power levels. Fig.…”

Section: A Dual Two-tone Testmentioning

confidence: 99%

Concurrent dual-band power amplifier model modification using dual two-tone test

Amin

Khan

Isaksson

et al. 2016

2016 46th European Microwave Conference (EuMC)

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Abstract-A dual two-tone technique for the characterization of memory effects in concurrent dual-band transmitters is revisited to modify a 2D-DPD model for the linearization of concurrent dual-band transmitters. By taking into account the individual nonlinear memory effects of the self-and cross-kernels, a new 2D modified digital pre-distortion (2D-MDPD) model is proposed, which not only supersedes the linearization performance but also reduces the computational complexity compared to the 2D-DPD model in terms of number of floating point operations (FLOPs). Experimental results show an improvement of 1.7 dB in normalized mean square error (NMSE) and a 58% reduction in number of FLOPs.

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“…Moreover, when the memory effect is significant, the phase-rotated memory components of which the magnitude and phase vary with time would be added up onto the IMD components, and thus the suppression would be more or less limited [5]. However, because this memory effects is from the interactions with the even-order envelope signal and the odd-order IMDs, the phenomenon also can be minimized by the accurate injection of the envelop signal into the even-order frequency out so that eventually no interaction with the odd harmonic is possible.…”

Section: The 3rd-zone Imd Of Frequency Multipliers With Harmonic Injementioning

confidence: 99%

Analysis on high-order intermodulation of frequency multipliers with harmonic injection

Park

Son

2008

IEICE Electron. Express

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Abstract:For the successful transmission of complex signals through frequency multipliers, high order analysis of IMD responses for a frequency tripler is performed and the optimum solutions for the harmonic injection technique is presented to suppress the high order IMDs in the 3 rd zone. From the 7 th order analysis, optimum injection was found to suppress IMDs in the 3 rd harmonic zone and their optimum phases are shown to be apart by 180 degrees due to the even-ordered Volterra products of the injection. The measurement results showed IMD suppression better than 30 dB, which is consistent with the analysis and the simulated results.

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Identification of RF Power Amplifier Memory Effect Origins using Third-Order Intermodulation Distortion Amplitude and Phase Asymmetry

Cited by 40 publications

References 10 publications

Effect of the Base-band Measurement Setup Errors on DPD Performance and Elimination Procedure

Effect of the Base-band Measurement Setup Errors on DPD Performance and Elimination Procedure

Concurrent dual-band power amplifier model modification using dual two-tone test

Analysis on high-order intermodulation of frequency multipliers with harmonic injection

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