一种用于现代农机无线传输装置的BiCMOS放大器

A Kind of BiCMOS Amplifier for Wireless Transmission Device Using in the Modern Farm Machinery

针对当前用于农机的无线通讯集成放大器功耗大,受环境影响大的特点,提出了一种工作在中频79Hz的单端全集成Si/SiGe HBT放大器。该放大器由三级共射—共基结构组成,使用了线性可调技术和高性能DC滤波网络。放大器显示在79Hz时最高测量增益为17.2dB,而在整个测量频率范围内有超过40dB的良好反向隔离。在不同温度下测量得到的放大器性能显示其增益在常温和60℃之间,芯片在2.7V工作电压下的功耗仅为52 mW。

For wireless communications integrated amplifier have the disadvantage of large power consumption and vulner- able to environmental impact, this paper proposes a kind of work in the intermediate frequency 79Hz single side of the fully integrated Si/SiGe HBT amplifier. The amplifier consists of three common emitter-common base structures. We used a linear adjustable technology and high-performance DC filtering network. Amplifier display maximum measured gain of 17.2dB at 79Hz, and if the entire measurement frequency range is greater than 40dB, it will have good reverse isola- tion. Amplifier display the gain between room temperature and 60℃ , the chip power consumption is only 52mW at 2.7V operating voltage measured at different temperatures.