Response time of VSWR protection for GaN HEMT based power amplifiers

Preis, Sebastian; Ferretti, Jerome; Wolff, Nikolai; Wiens, Alex; Jakoby, Rolf; Heinrich, W.; Bengtsson, Olof

doi:10.1109/eumc.2016.7824364

Cited by 5 publications

(2 citation statements)

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“…So far (11) restores the peak P out to the peak P out,Z Ant ¼50 . Furthermore, to restore the ideal load to the Main PA, (V main,opt ) needs to be equal to V main,50 ¼ 2I 0 Z 0 .…”

Section: Parallel Doherty Pa Under Load Variationsmentioning

confidence: 99%

“…Some conditions can generate high voltage standing‐wave ratios (VSWR). For example, in a Radio Detection And Ranging (RADAR) system, it's possible that the transmitted power will be reflected into the PA if close barriers cause antenna mismatch 11 . Also, the PAs may encounter severe load impedance mismatch situations in a user equipment (UE), which can make addressing high voltage‐standing‐wave‐ratio (VSWR) occurrences more difficult 7 .…”

Section: Introductionmentioning

confidence: 99%

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A review of Doherty power amplifier and load modulated balanced amplifier for 5G technology

Makhsuci

Navidi

Sanduleanu

et al. 2023

Circuit Theory & Apps

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In this paper, functionality of the Doherty power amplifiers (DPAs) along with their design constraints such as DPA combining techniques are reviewed. This is because power amplifier (PA) is a key building block in the design of fifth generation (5G) communication systems. A significant trend is the DPA bandwidth enhancement technique, which is the subject of numerous papers in the literature. So, we will review some papers with different solutions to address DPA's bandwidth limitations. There are also different works in the literature that have focused on high-efficiency PA structure designs, which are also discussed in this paper. An excellent option for effective power combining in broadband designs is using balanced amplifiers. We have discussed load modulated balanced amplifiers (LMBA) in this paper because designing an effective PA with a wide bandwidth is crucial. We also covered some papers that have proposed techniques based on the linearization method to bring the efficiency and linearity of DPAs to a fair level. K E Y W O R D SDoherty power amplifier, energy efficiency, fifth generation (5G), linearization, peak to average power ratio (PAPR), quasi-balanced Doherty power amplifier (QB-DPA)

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“…So far (11) restores the peak P out to the peak P out,Z Ant ¼50 . Furthermore, to restore the ideal load to the Main PA, (V main,opt ) needs to be equal to V main,50 ¼ 2I 0 Z 0 .…”

Section: Parallel Doherty Pa Under Load Variationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%