A − 137 dBm/Hz Noise, 82% Efficiency AC-Coupled Hybrid Supply Modulator With Integrated Buck-Boost Converter

Paek, Ji-Seon; Lee, Seung−Chul; Youn, Yong-Sik; Kim, Dongsu; Choi, Jung-Joo; Jung, Jong Hyun; Choo, Younghwan; Lee, Sung-Jun; Han, Jae‐Hoon; Cho, Thomas Byunghak

doi:10.1109/jssc.2016.2604296

Cited by 30 publications

(14 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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%

“…Many supply modulators in ET PAs employ a hybrid topology (switching-cumlinear) [65][66][67][68][69][70][71][72][73][74][75][76][77][78]. This is because the hybrid CDA features higher power-efficiency compared to the Class AB amplifier-only topology [81], higher bandwidth and lower output ripple compared to the CDA-only topology [58][59][60][61][62][63][64] voltage of the input signal is 1.8V and the AC amplitude is 1.4V pp .…”

Section: _ IIImentioning

confidence: 99%

“…Put simply, to improve the powerefficiency, the hysteresis of the supply modulator should be low in Case 2. As explained earlier, in conventional designs [66,68,71,[73][74][75][76]78] where the hysteresis, I HYS , of the supply modulator is fixed, I HYS and f sw(nb) can only be optimized for single standard application. Undoubtedly, there are challenges to design a supply modulator optimized for multi-standard applications.…”

Section: Design Challenges For Multi-standard Applicationsmentioning

confidence: 99%

See 4 more Smart Citations

Analysis and design of switching amplifiers for smartphones

He¹

View full text Add to dashboard Cite

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.

show abstract

“…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%