A 0.8-1.9GHz-Band CMOS Direct Digital RF Quadrature Modulator

被引：0
|
作者：
Suematsu, Noriharu [1 ]
Wada, Osamu [1 ]
Kameda, Surugu [1 ]
Takagi, Tadashi [1 ]
Tsubouchi, Kazuo [1 ]
机构：
[1] Tohoku Univ, Elect Commun Res Inst, Sendai, Miyagi, Japan
来源：
2015 IEEE INTERNATIONAL SYMPOSIUM ON RADIO-FREQUENCY INTEGRATION TECHNOLOGY (RFIT) | 2015年
关键词：
digital RF; modulator; DAC CMOS; direct conversion; RFIC; microwave;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A 0.8-1.9 GHz direct digital radio frequency ( RF) quadrature modulator is designed and fabricated in 90 nm CMOS process. The bit number and the CLK frequency of I/Q digital input signals are designed to satisfy the required EVM, ACPR/NACPR and system bandwidth for 0.9/1.9GHz W-CDMA terminals. The fabricated quadrature modulator performs EVM of less than -22.7dB, ACP/NACP of less than -36.1dBc and spurious free range of 197MHz ( wider than the W-CDMA system bandwidth of 60MHz) with 8-bit, 100Msps I/Q digital input signals and the d.c. power consumption of 10mW.
引用
收藏
页码：148 / 150
页数：3
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