半导体学报2011，Vol.32Issue(4)：93-97,5.DOI:10.1088/1674-4926/32/4/045001
Multimode high-resolution DPWM for RF class-D amplifiers*
Multimode high-resolution DPWM for RF class-D amplifiers*
摘要
Abstract
This paper describes a multimode high-resolution digital pulse width modulator. This modulator, based on a novel hybrid structure, not only has a programmable duty cycle but also realizes phase modulation. A 576 ps pulse resolution is achieved based on a 13.56 MHz switching frequency for near field communication. Fabricated in a SMIC 0.18-μm EEPROM CMOS process, the total area of modulator is only 130 × 180μm2. Measurement results validate the multi-mode modulation function and high pulse resolution.关键词
(D)PWM/ modulator/ class-D amplifier/ AM/ PMKey words
(D)PWM/ modulator/ class-D amplifier/ AM/ PM引用本文复制引用
Sun Lichong,Zhu Zheng,Yan Na,Min Hao..Multimode high-resolution DPWM for RF class-D amplifiers*[J].半导体学报,2011,32(4):93-97,5.基金项目
Project supported by the Important National Science & Technology Specific Projects (No.2009ZX03001-012-03). （No.2009ZX03001-012-03）
