A 15 mW, 70 kHz 1/f corner direct conversion CMOS receiver

被引：74

作者：

Sacchi, E ^{[1
]}

Bietti, I ^{[1
]}

Erba, S ^{[1
]}

Tee, L ^{[1
]}

Vilmercati, P ^{[1
]}

Castello, R ^{[1
]}

机构：

[1] STMicroelect, Studio Microelettron, I-27100 Pavia, Italy

来源：

PROCEEDINGS OF THE IEEE 2003 CUSTOM INTEGRATED CIRCUITS CONFERENCE | 2003年

关键词：

D O I：

10.1109/CICC.2003.1249440

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：

This paper describes a fully integrated Low Noise Amplifier (LNA) + mixer + first filtering stage, suitable for direct conversion receivers. Its key feature is a current driven passive mixer loaded by a low impedance. Measurements performed on a 0.18 mum CMOS prototype, confirm that this architecture, when compared to a classic one, gives a much smaller flicker noise (70 kHz 1/f corner), together with an excellent noise figure (4.4 dB integrated from 10 kHz to 1.92 MHz), while requiring only 15 mW of power. Moreover, a very good linearity is simultaneously achieved (IIP3 = -1 dBm). The main limitation of the present implementation is the bandwidth of the opamp that implements the mixer load. Due to this, IIP3 degrades at higher frequency (IIP3 about -12 dBm at 10 MHz). This is however not a fundamental limitation.

引用

页码：459 / 462

页数：4