A Current-Mode, Low Out-of-Band Noise LTE Transmitter With a Class-A/B Power Mixer

被引：34

作者：

Codega, Nicola ^{[1
]}

Rossi, Paolo ^{[1
]}

Pirola, Alberto ^{[1
]}

Liscidini, Antonio ^{[1
]}

Castello, Rinaldo ^{[1
]}

机构：

[1] Marvell Italy SRL, I-27100 Pavia, Italy

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2014年 / 49卷 / 07期

关键词：

ACLR; active mixer; baseband; Biquad; class A; class A/B; CMOS integrated circuit; current mode; EVM; high efficiency; long-term evolution (LTE); mobile communications; out-of-band noise; phase noise; radio frequency; 3G; transmitter; voltage mode;

D O I：

10.1109/JSSC.2014.2315643

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 complete SAW-less transmitter meeting LTE requirements is presented. High power efficiency and low out-of-band noise are obtained exploiting fully current operation of an analog baseband followed by a class-A/B power mixer. Out-of-band emissions are limited by filtering noise and DAC replicas right before the signal up-conversion through a current-mode Biquad feeding directly the power-mixer. The transmitter, implemented in 55 nm CMOS technology, shows -158 dBc/Hz RX-band noise emission at 30 MHz offset for LTE10, while consuming 96 and 34 mW from the single 1.8 V power supply at 4 and -10 dBm output power, respectively. ACLR is always below -42 dBc up to 4 dBm for both LTE10 and LTE20.

引用

页码：1627 / 1638

页数：12

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