A Bandwidth Extension Technique for Dynamic Characterization of Power Amplifiers

Wisell,; Ronnow,; Handel,

doi:10.1109/imtc.2006.328389

Cited by 8 publications

(4 citation statements)

References 3 publications

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“…Implementing coherent averaging can improve the dynamic range of the receiver up to 20dB [5]. Receivers are never ideal, a bandwidth limitation on their baseband can vary up to 20-50 MHz; using frequency stitching can allow measurements of signals as wide as hundreds of MHz [5]. Finally, excitation signal purity is a critical issue in a measurement system; applying digital pre-distortion (DPD) can reduce the spurious in the input link to the DUT [9].…”

Section: Discussionmentioning

confidence: 99%

“…The signal is a consecutive baseband-sequence of test scenarios, where the amplitude and frequency are increased stepwise. By using coherent sampling, it was assured that the aimed signal power in the spectrum is contained within the relative tone respectively [5]. The signal is then downloaded to an arbitrary waveform generator (AWG) in the VSG, where it is upconverted to radio frequencies (RF).…”

Section: B Measurement Methodsmentioning

confidence: 99%

“…The measured data is sent to the PC, where the data sequences are synchronized in time and frequency domain and each test scenario (amplitude and frequency) is separated and processed individually [5]. A requirement for that is the use of time repetitive signals.…”

Section: B Measurement Methodsmentioning

confidence: 99%

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Automated multidimensional characterization of power amplifier for design and production

Nader

Al-Tahir

Andersen

et al. 2009

2009 IEEE Intrumentation and Measurement Technology Conference

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Abstract-Designing, optimizing and producing modern power amplifiers (PA) requires new and fast RF (radio frequency) measurement techniques capable of characterizing its real behavior. PAs are a truly multidimensional device where many desired performance parameters are contradictory to each other. This is especially true for the generation of modern communication PAs that require high efficiency, high linearity as well as high bandwidth. This paper presents a software-defined measurement setup for fast and cost efficient multidimensional measurements based on highly accurate standard instruments and a PC. The test bed as well as the graphical user interface is presented along with a demonstration of its functionality. During tuning of tank networks, drain quiescent current, and bias conditions, 3-dimensional graphs can be selected for the most appropriate axes of trade-off parameters to display a true behavior of the PA under test subjected to real-world or close to real-world signals. The measurement system offers the possibility to monitor envelope-tracking dynamic power consumption up to 100 MHz plus the possibility to use high crest factors.

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Section: Discussionmentioning

confidence: 99%

Section: B Measurement Methodsmentioning

confidence: 99%

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Automated multidimensional characterization of power amplifier for design and production

Nader

Al-Tahir

Andersen

et al. 2009

2009 IEEE Intrumentation and Measurement Technology Conference

View full text Add to dashboard Cite

show abstract

“…Another area for future research is to evaluate the performance of the model for signals having larger bandwidths using the frequency stitching technique described in [22].…”

Section: Discussionmentioning

confidence: 99%

Derivation of a behavioral RF power amplifier model with low normalized mean-square error

Wisell

Isaksson

2007

2007 European Microwave Integrated Circuit Conference

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In this paper a behavioral power amplifier model with substantially lower normalized mean-square error than the well-known and widely used parallel Hammerstein or tapped delay line model is presented. This is significant since the parallel Hammerstein model currently must be considered to be the baseline for behavioral power amplifier modeling efforts. The proposed model does also have at least as low total error as any other model known to the authors for measurements on class-AB LDMOS power amplifiers. Further, the proposed model exhibits an equal or lower out-of-band error than the parallel Hammerstein model. The parameters of the model can be extracted using straightforward system identification techniques. Together this makes the proposed model a strong candidate to replace the parallel Hammerstein model as the model of choice for behavioral power amplifier modeling for many applications.

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Digital predistortion of RF power amplifiers with Zhu's general sampling theorem

Zhai

Zhang

et al. 2015

2015 Asia-Pacific Microwave Conference (APMC)

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A Bandwidth Extension Technique for Dynamic Characterization of Power Amplifiers

Cited by 8 publications

References 3 publications

Automated multidimensional characterization of power amplifier for design and production

Automated multidimensional characterization of power amplifier for design and production

Derivation of a behavioral RF power amplifier model with low normalized mean-square error

Digital predistortion of RF power amplifiers with Zhu's general sampling theorem

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