使用微機電懸浮式電感改善微波放大器之特性和核電廠電磁干擾改善

Performance Improvement of Microwave Amplifier Using Micromachined Suspended Inductors and Electromagnetic Interference (EMI) Improvement in Nuclear Power Plant

李宗維(Zong-Wei Li)

指導教授 ： 王多柏

國立臺北科技大學/電資學院/電腦與通訊研究所/碩士(2013年)

摘要

本論文研究中主要分為三個部分，第一部分介紹使用微機電電感（Micromachined Inductors）設計一個低電壓低功耗K-Band 之0.18-um CMOS 低雜訊放大器（Low-noise Amplifier），其中Triple-cascode 利用DC電流路徑分流（DC-current-path）與順向基底偏壓（Forward-body-biased）技術有效減少此LNA之操作電壓與功率消耗。此外，於Triple-cascade電晶體間加入電感減少雜訊指數（NF）與在電路中部份電感採用微機電製程改善LNA增益與雜訊指數的特性。比較有無使用微機電製程，量測結果最大峰值增益顯著增加12.3至13.7分貝懸浮電感的品質因素和雜訊指數有效的提高了5.8至5.0分貝。
第二部分介紹核電廠建設時採用先進沸水式反應爐，此反應爐的內部設計具有自動化微調控制棒通稱FMCRD，然而FMCRD易產生電磁干擾EMI，對於中子監測系統(SRNM)來說是非常敏感的，為了克服這個困難，採用拉鍊式電纜屏蔽材料包覆SRNM與FMCRD，這種方法實現降低48.8%的雜訊振福，同時減少FMCRD電纜所帶來的輻射影響，穩定整個SRNM系統。
第三部分提出一個K-band含主動相位校準技術（PCT）之0.18-um CMOS微波放大器，所提出的PCT技術有效地減輕了寄生元件的效應和電路不匹配所造成的有效的平衡與不平衡轉換器的相位偏差。模擬的電壓增益與雜訊指數分別為16.7分貝和4.9分貝，相位誤差與增益誤差為5.2度和1.8分貝，整體電路功耗6.9毫瓦。

關鍵字

微機電電感 ； 品質因數 ； 電磁干擾 ； 相位校準技術 ； DC電流路徑分流

並列摘要

Thesis research can be divided into three parts. The first part introduces a low-voltage low-power K-band 0.18-um CMOS low-noise amplifier (LNA) using micromachined inductors. By splitting the dc current paths of the triple-cascode structures and using a forward-body-biased technique, the supply voltage and dc power dissipation of this LNA can be effectively reduced. Moreover, inductors are inserted between the MOSFETs of the triple-cascode stage to achieve low noise figure (NF). To improve LNA performance in terms of gain and NF, micromachined inductors are adopted in this work. By using this technique, the measured peak gain of the microwave amplifier can be significantly increased from 12.3 to 13.7 dB due to the high Q-factor suspended inductors and noise figure is effectively improved from 5.8 to 5.0 dB
The second part introduces the building of nuclear power plants using Advanced Boiling Water Reactor (ABWR) units that is under construction. This model is designed with a Fine-Motion Control Rod (FMCRD) for high performance. However, the FMCRD produces electromagnetic noise, and the Startup-Range Neutron Monitoring (SRNM) System is very sensitive to the electromagnetic noise. To overcome this difficulty, zippered cable shielding can be used to conceal the SRNM and FMCRD cables. This approach not only achieves a remarkable 48.8% noise amplitude reduction, but also minimizes the radiated emissions from the FMCRD cables, leading to an improved, stabilized SRNM system.
The third part presents a K-band containing active Phase Calibration Technique (PCT) of the 0.18-um CMOS microwave amplifier. The proposed PCT technology effectively reduces pahse error by the effects of parasitic components and circuit mismatch of the impedance.
Within the low noise DC-current-path preamplifier, this active balun circuit can be employed as low-noise amplifier as well. By using this technique, the simulated peak gain and noise figure of the LNA are 16.7dB and 4.9dB,and the phase error and gain error are 5.2 degree and 1.8dB, the overall power consumption of amplifier is 6.9mW.

並列關鍵字

Micro-machine Inductor ； Quality Factor ； EMI ； PCT ； DC-Current-Path

參考文獻

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