Broadband transistor feedback amplifiers

Almond J.; Boothroyd A.R.

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Broadband transistor feedback amplifiers

机译：宽带晶体管反馈放大器

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The possibilities of negative-feedback amplifiers involving three cascaded common-emitter junction-transistor stages are investigated. Simple approximate expressions are given for the power gain, input impedance and output impedance of series, shunt and compound feedback amplifiers, for the case of large applied negative feedback. It is shown that with large negative feedback, dynamic stability considerations may be analysed with little error by considering the forward and return paths of the feedback loop as separable, in spite of the interaction effects between transistors. Owing to the restricted frequency range of application of the transistors employed, the maximum negative feedback possible without instability depends almost exclusively on the frequency characteristics of the current gain, ????????, of the transistor; it is found that the ????????-characteristics may be represented with adequate accuracy by a minimum-phase (RC) approximation, which leads to simple analysis both of stability conditions and of suitable phase and amplitude margins. Examples are given of feedback amplifiers having overall operating power gain and applied negative feedback of approximately 33dB and 30dB respectively, in which dynamic stability is secured by using phase-advancing networks in the return path of the feedback loop.

机译：研究了涉及三个级联的共射极结-晶体管级的负反馈放大器的可能性。对于大的负反馈应用，给出了串联，并联和复合反馈放大器的功率增益，输入阻抗和输出阻抗的简单近似表达式。结果表明，在负反馈较大的情况下，尽管晶体管之间存在相互作用，但通过将反馈环路的前向和返回路径视为可分离的，可以以很小的误差分析动态稳定性。由于所用晶体管的应用频率范围受到限制，在没有不稳定性的情况下可能产生的最大负反馈几乎完全取决于晶体管电流增益的频率特性。可以发现，通过最小相位（RC）近似可以以足够的精度来表示Δ∑特征，这使得可以简单地分析稳定性条件以及合适的相位和幅度裕度。给出了具有总工作功率增益和分别施加大约33dB和30dB的负反馈的反馈放大器的示例，其中通过在反馈回路的返回路径中使用相位超前网络来确保动态稳定性。

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《Proceedings of the IEE - Part B: Radio and Electronic Engineering》 |1956年第7期|共1页
作者
Almond J.; Boothroyd A.R.;
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1. Discussion on ????????Dekatrons and electro-mechanical registers operated by transistors????????, ????????Some aspects of half-wave magnetic amplifiers????????, ????????Some transistor input stages for high-gain d.c. amplifiers???????? and ????????A transistor high-gain chopper-type d.c. amplifier???????? [J] . Proceedings of the IEE - Part B: Radio and Electronic Engineering . 1958,第21期

机译：讨论由晶体管操作的Dekatron和机电寄存器，半波磁放大器的某些方面。 ??，????????一些晶体管输入级用于高增益直流放大器????????晶体管高增益斩波型d.c。放大器????????
2. The authors' replies to the discussion on ????????Dekatrons and electro-mechanical registers operated by transistors????????, ????????Some aspects of half-wave magnetic amplifiers????????, ????????Some transistor input stages for high-gain d.c. amplifiers???????? and ????????A transistor high-gain chopper-type d.c. amplifier???????? [J] . Chaplin G.B.B., Williamson R., Ettinger G.M., Proceedings of the IEE - Part B: Radio and Electronic Engineering . 1958,第21期

机译：作者对有关晶体管工作的Dekatron和机电寄存器的讨论，半波磁放大器的某些方面的答复。 ?????????，?????????某些晶体管输入级用于高增益直流放大器????????晶体管高增益斩波型d.c。放大器????????
3. A Broadband Millimeter-Wave Continuous-Mode Class-F Power Amplifier Based on the Deembedded Transistor Model [J] . Wang Dehan, Chen Wenhua, Chen Xiaofan, IEEE microwave and wireless components letters . 2020,第6期

机译：基于Deembedded晶体管模型的宽带毫米波连续模式C类-F功率放大器
4. Broadband RF feedback amplifier design with simple feedback network [C] . Marzuki A., Zainal T., Zulkifli A., RF and Microwave Conference, 2004. RFM 2004. Proceedings . 2004

机译：具有简单反馈网络的宽带RF反馈放大器设计
5. Aluminum gallium nitride/gallium nitride high-electron-mobility-transistors based flip-chip integrated broadband power amplifiers [D] . Xu, Jian 2000

机译：基于氮化铝镓/氮化镓高电子迁移率晶体管的倒装芯片集成宽带功率放大器
6. A Capacitive Feedback Transimpedance Amplifier with a DC Feedback Loop Using a Transistor for High DC Dynamic Range [O] . Jung-hoon Noh 2020

机译：一种电容反馈转换放大器具有DC反馈回路使用晶体管进行高直流动态范围
7. Broadband Fully Integrated GaN Power Amplifier With Minimum-Inductance BPF Matching and Two-Transistor AM-PM Compensation [O] . G. Reza Nikandish, Robert Bogdan Staszewski, Anding Zhu 2020

机译：宽带全集成GaN功率放大器，具有最小电感BPF匹配和双晶体管AM-PM补偿
8. Cascaded complementary pair broadband transistor amplifiers Patent [R] . Lutes, G. F., Jr., Thompson, G. D., Jr. 1969

机译：级联互补对宽带晶体管放大器专利

Broadband transistor feedback amplifiers

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