Development of a Small Signal Amplifier with Modeling of BJT-JFET Unit in Sziklai Pair Topology
Development of a Small Signal Amplifier with Modeling of BJT-JFET Unit in Sziklai Pair Topology
复制标题
利用 Sziklai 对拓扑中的 BJT-JFET 单元建模开发小信号放大器
DOI：
--
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
R. Mishra
中科院分区：
文献类型：
--
作者：
S. Shukla;Geetika Srivastava;Pratima Soni;R. Mishra
在Sziklai对拓扑结构中，采用两种不同模型的BJT-JFET单元设计小信号放大器。第一种放大电路的最大电压增益为28.818，电流增益为40.965，带宽为1.4319MHz， THD为0.87%，因此可以广泛适用于各种模拟通信电路。第二种放大电路的最大电压增益为5.738，电流增益为5.517，带宽为13.418Hz， THD为6.30%，可用于放大低频、低量级的波动，如人脑释放的低频波或地震、大爆炸时产生的地震波。本研究还对所提出的放大电路进行了定性分析。
As a novel approach, two different models of BJT-JFET unit in Sziklai pair topology is used to design Small signal amplifiers. First amplifier circuit provides 28.818 maximum voltage gain, 40.965 current gain, 1.4319MHz bandwidth with 0.87% THD and therefore may find wide applicability in various analog communication circuits. However the second amplifier circuit with 5.738 maximum voltage gain, 5.517 current gain, 13.418Hz bandwidth and 6.30% THD can be used to amplify fluctuations of low frequency and low magnitude such as low frequency waves released by human brain or the seismic waves produced during earthquake or heavy explosion. The present investigation also deals with qualitative analysis of the proposed amplifier circuits.