← 返回 JSSC 论文列表JSSC 2012第2期RF & Wireless0.18μmNeural Network Accelerator
A Power-Efficient Receiver Architecture Employing Bias-Current-Shared RF and Base
提出一种采用偏置电流共享的高效能接收器架构,实现低噪声和高线性度。
0.18μm CMOS, 1.8V, 44.5dB增益, 4.3dB NF, 20dBV OIP3
接收器架构偏置电流共享低噪声高线性度CMOS技术
▸偏置电流共享技术:通过在RF和基带级之间共享偏置电流,显著降低功耗,同时保持各级的完整供电电压,实现了2.2 mA的低功耗设计(方法创新)。
▸主动噪声整形网络:采用主动噪声整形技术有效抑制RF和基带转换器产生的低频噪声,提升了系统的信噪比(电路创新)。
▸非线性增益补偿:在跨阻放大器中合成非线性增益以补偿基带压缩,显著提高了线性度,实现了20 dBV的OIP3(电路创新)。
▸无电感设计:通过避免使用集成电感,不仅减小了芯片面积至0.5 mm²,还降低了制造成本(系统创新)。
Abstract
Ap o w e r - e fficient qua drature receiver employing a
down-converter that uses a passi ve current-commutating mixer
for frequency translation is presented. The architecture uses
bias-current sharing b etween the RF and baseband stages while
making the full supply voltage available to either stage. An input
transconductor, realized using a differential common-source stage,
converts the RF signal into a current, while baseband amplification
is achieved using a transimpedance ampli fier. Active noi