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Conference Paper
PWM Based CMOS Supply Modulator for LTE Envelope Tracking Transmitter
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- Authors
- Seunghyun Jang, Kyoung-Pyo Ahn, Yoon-Ho Choi, Nam-Sik Ryu, Bonghyuk Park, Seok-Bong Hyun, Jaeho Jung
- Issue Date
- 2011-09
- Citation
- International Conference on Information and Communication Technology Convergence (ICTC) 2011, pp.622-623
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- A PWM based supply modulator on 180nm CMOS process for a high efficiency envelope tracking transmitter is designed. For high efficiency PWM operation, a ramp generator and a non-overlap clock generator are used. With an LTE 20MHz envelope signal with 7.6dB PAPR, the supply modulator shows efficiency of 72.2% with a resistive load of 2ohm. © 2011 IEEE.
- KSP Keywords
- CMOS Process, Envelope signal, Resistive load, Supply modulator, clock generator, envelope tracking(ET), high efficiency, ramp generator