JSSC 2007第12期Analog Circuits0.25μm BiCMOS

SiP Tuner With Integrated LC Tracking Filter for Both Cable and Terrestrial TV Reception

设计了一款集成LC跟踪滤波器的硅调谐器，适用于有线及地面电视信号接收。

5 dB NF, 42–870 MHz, 55 dB视频SNR, 62 dB镜像抑制, 780 mW功耗

硅调谐器LC跟踪滤波器有线电视地面电视自校准

▸集成自校准LC跟踪滤波器：该方法创新通过动态调整LC滤波器参数实现42–870 MHz全频段覆盖，解决了传统固定滤波器无法适应宽频带信号的问题，NF低至5 dB，显著提升信号接收质量。

▸全集成全复数混频器：电路创新采用复数混频架构结合自动校准技术，实现62 dB以上的镜像抑制，突破传统混频器对图像通道干扰的限制，支持高精度模拟/数字TV信号解调。

▸自动校准技术：系统创新通过内置校准算法实时优化混频器和滤波器性能，在3.3V供电下仅消耗780mW，确保55 dB视频SNR的稳定输出，适应有线/地面TV的复杂频谱环境。

▸高集成度BiCMOS设计：工艺创新采用0.25μm 40-GHz BiCMOS技术，将包括跟踪滤波器、混频器等模块集成于5.7mm²芯片，实现硅调谐器的小型化与高性能统一。

Abstract

A silicon tuner has been designed for the reception of analog or digital TV signals from a cable or a terrestrial network. It exhibits 5 dB NF over the 42–870 MHz frequency range and integrates a self-calibrated LC tracking ﬁlter. This allows 55 dB video SNR under fully loaded spectrum conditions. The /40 /43/49 /41 image channel is rejected by more than 62 dB thanks to a fully integrated full complex mixer with auto calibration. The 5.7 mm /50 active die is fabricated in 40-GHz BiCMOS 0.25 m technology and dissipates 780 mW running from a 3.3 V supply.