射頻蕭特基二極體大信號非線性等效電路之萃取與應用

Large-Signal Nonlinear Parameter Extraction and Application of RF Schottky Diode

李興穎(Sin-Ging Lee)

指導教授 ： 余政杰

國立臺北科技大學/機電學院/電腦與通訊研究所/碩士(2005年)

https://doi.org/10.6841/NTUT.2005.00139

摘要

本論文中主要為探討射頻二極體之線性與非線性等效模型之萃取與運用二極體之非線性特性進行電路應用，當完成二極體等效模型後，接著必須對等效模型進行驗證，再利用二極體之非線性特性來進行電路應用，二極體部份是針對Agilent HSMS-8202 Surface-Mount Microwave Schottky Diode來進行線性與非線性之等效電路萃取，而在電路應用方面是針對射頻-直流功率轉換器(RF-DC Power Converter)與915 MHz二倍頻器(Frequency Doubler)來進行設計與實作，RF-DC Power Converter可將915 MHz訊號輸入，再輸出端轉為直流輸出，可做為強度檢測(EM Field Strength Meter)，射頻辨識標籤晶片(RFID Tag IC)射頻直流電源轉換(RF-DC Conversion)等應用，倍頻器可在通訊系統中的許多應用裡，提供穩定且低雜訊的信號，一個高頻的RF信號經常是取自低頻訊號的諧波成分，而輸入源信號通常以取自非常穩定的晶體震盪器(Crystal Oscillator)，在此將915 MHz訊號輸入，取出二倍頻率1.83 GHz，通常倍頻電路是運用元件的非線性特性來產生非線性諧波，再將需要的頻率取出，將不需要的頻率濾去，在論文最後將探討Hairpin BPF之設計，此濾波電路將接在倍頻器後端壓抑不需要之諧波，使得輸出功率之頻譜純淨，在本論文中將一一從等效模型開始到電路應用以循序漸進方式做深入研究與探討。

關鍵字

蕭特基二極體 ； 線性等效電路 ； 非線性等效電路 ； SPICE參數 ； 阻抗匹配 ； 射頻-直流功率轉換器 ； 倍頻器 ； Hairpin帶通濾波器

並列摘要

In this paper, the extraction of Agilent HSMS-8202 Surface-Mount Microwave Schottky Diode linear and nonlinear equivalent circuit will be presented, and we can use this nonlinear equivalent circuit model to realize many circuit application.
The circuit application focus on design of RF-DC Power Converter and 915 MHz Frequency Doubler, RF-DC Power Converter can be used in Detector and RFID Tag IC by transfer 915 MHz frequency power to DC voltage, moreover, Frequency Multiplication often use the nonlinear properties of nonlinear device ,which can offer a stable and low noise RF signal in some application of communication system and the input signal often come from the very stable signal, like Crystal Oscillator, then extraction the wanted frequency, filtering the other harmonic frequencies.
In the last chapter, we will design and discuss Hairpin Bandpass Filter, which can more suppress the harmonic frequency we don’t want in the frequency doubler.

並列關鍵字

Schottky Diode ； linear equivalent circuit ； nonlinear equivalent circuit ； SPICE parameters ； impedance match ； RF-DC Power Converter ； frequency multiplier ； Hairpin Bandpass Filter

參考文獻

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