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

页码：148 / 150

页数：3

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