| Citation: |
Sun Lichong, Zhu Zheng, Yan Na, Min Hao. Multimode high-resolution DPWM for RF class-D amplifiers[J]. Journal of Semiconductors, 2011, 32(4): 045001. doi: 10.1088/1674-4926/32/4/045001
Sun L C, Zhu Z, Yan N, Min H. Multimode high-resolution DPWM for RF class-D amplifiers[J]. J. Semicond., 2011, 32(4): 045001. doi: 10.1088/1674-4926/32/4/045001.
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Multimode high-resolution DPWM for RF class-D amplifiers
doi: 10.1088/1674-4926/32/4/045001
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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 × 180 μm2. Measurement results validate the multi-mode modulation function and high pulse resolution.-
Keywords:
- (D)PWM
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References
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