A wideband supply modulator for 20MHz RF bandwidth polar PAs in 65nm CMOS

Shrestha, R.; Zee, Ronan van der; Graauw, A.J.M. de; Nauta, Bram

doi:10.1109/vlsic.2008.4585964

Cited by 6 publications

(20 citation statements)

References 7 publications

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“…20MHz [66,74,75]). This is because the Class AB amplifier therein generally features wider bandwidth and better linearity compared to the CDA.…”

Section: Ab -mentioning

confidence: 99%

“…This is because the Class AB amplifier therein generally features wider bandwidth and better linearity compared to the CDA. By embodying a Class AB amplifier in parallel with the CDA, the hybrid CDA [65][66][67][68][69][70][71][72][73][74][75][76][77][78] is able to achieve better overall performance for ET PAs (in terms of bandwidth, power-efficiency and noise),…”

Section: Ab -mentioning

confidence: 99%

“…As described in Chapter 1, at this juncture, hybrid CDAs [65][66][67][68][69][70][71][72][73][74][75][76][77][78] are increasingly prevalent for ET PAs to track wideband envelope signals (bandwidth >1MHz) due to their higher bandwidth compared to CDAs. In this section, we will review hybrid CDAs for ET PAs in some detail including the control scheme and modus operandi.…”

Section: A Review Of Hybrid Class D Amplifiers For Et Pasmentioning

confidence: 99%

“…In practical hybrid CDAs for ET PAs, as the voltage swing is generally considered as a large signal, the large-signal analysis method is typically adopted for analysis [66,68,84,92].…”

Section: Control Schemesmentioning

confidence: 99%

“…This may render the RF PA failing to satisfy the spectrum mask requirements. The output noise of the hybrid CDA is dominated by the output ripple noise (i.e., switching noise) [66,68,70,71], which is due to the switching operation of the CDA. Consequently, the output ripple of the hybrid CDAs would need to be kept low (e.g.…”

Section: Output Voltage Ripplementioning

confidence: 99%

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Analysis and design of switching amplifiers for smartphones

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The past years as a Ph.D. student have been a special journey for me with many fond memories. Without the kind assistance of many people, it would have been very difficult for me to achieve this work. First of all, I would like to express my gratitude to my advisor, Prof. Joseph Chang. Prof. Chang guided me throughout my entire Ph.D. program with his outstanding academic wisdom and valuable suggestions. His support throughout these years helped me to move forward. It was one of my most enjoyable experiences learning from his profound knowledge and expertise. I would like to thank my co-advisor, Dr. Yu Rongshan. He offered valuable guidance as well as kind support throughout this Ph.D. program. I am especially grateful to Dr. Ge Tong for discussions pertaining to the technical aspects in this research program.

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“…20MHz [66,74,75]). This is because the Class AB amplifier therein generally features wider bandwidth and better linearity compared to the CDA.…”

Section: Ab -mentioning

confidence: 99%

Section: Ab -mentioning

confidence: 99%

Section: A Review Of Hybrid Class D Amplifiers For Et Pasmentioning

confidence: 99%

“…In practical hybrid CDAs for ET PAs, as the voltage swing is generally considered as a large signal, the large-signal analysis method is typically adopted for analysis [66,68,84,92].…”

Section: Control Schemesmentioning

confidence: 99%