Research of Microwave Oscillators For Wireless Applications

[[abstract]]由於無線通訊不斷進步，所以有了第四代行動通訊系統，本論文應用於TD-LTE之頻段的 3 5 GHz電壓控振盪器(Voltage-Controlled Oscillator VCO)設計，在設計上，我們使用LC諧振振盪器( LC-tank Oscillator )型式搭配介質諧振器，將頻率設定在3 5 GHz來應用在TD-LTE 操作頻段3 4~3 5GHz，並且使用ADS來進行實體電路模擬，電晶體採用Agilent 公司的ATF-55143 Low Enhancement Mode MOSFET，壓變電容二極體是採用TOSHIBA公司的JDV2S02E之元件。3 5 GHz電壓控振盪器輸出功率為-1 8dBm，輸出訊號在位移1MHz時相位雜訊-123 dBc/Hz，其操作頻率可在3 4 GHz~3 6GHz。 關鍵字：電壓控振盪器、相位雜訊[[abstract]]Due to advance in wireless communication had the technology of Long Term Evolution (LTE) This thesis apply to frequency band of 3 5 GHz VCO design In this design we use LC-tank oscillator type to design on the frequency band of TD-LTE 3 4~3 5 GHz And use ADS to simulate the VCO circuit Transistor is ATF-55143 and varactor is JDV2S02E The output power is -1 8 dBm、phase noise offset 1 MHz is -123 dBc/Hz and the control frequency on 3 4 ~ 3 6 GHz of VCO performance Keyword：VCO、Phse nois