標題: | 主動式倍頻技術20GHz鎖相迴路之研製 20GHz Phase Locked Oscillator with Active Frequency Multiplication |
作者: | 蔡明宏 Tsai, Ming-Horng 高曜煌 Kao Yao-Huang 電信工程研究所 |
關鍵字: | 鎖相迴路;倍頻器;phase locked loop;multiplier |
公開日期: | 1997 |
摘要: | 衛星通訊用之鎖相低雜訊20GHz訊號已發展出來。電路架構的策略是 考量在元件可用性及低價位。訊號是從一個2.5GHz鎖相訊號源倍頻所產生 。2.5GHz鎖相訊號源包括有溫度控制式石英振盪器、高品質因子同軸共振 器式之電壓控制振盪器、頻率合成器之積體電路、預除器和主動式迴路濾 波器。而且,20GHz訊號是循序地由高電子移動率電晶體式的頻率四倍頻 器及頻率二倍頻器所產生。 A locked low phase noise 20GHz signal is developed for the satellite communication. The strategy of the construction is on the component availability and low cost. The signal is multiplied from a 2.5GHz locked source. The locked loop for 2.5GHz source consists of a temperature controlled crystal oscillator (TCXO), voltage controlled oscillator (VCO), high-Q coaxial resonator, frequency synthesizer IC, and active loop filter. And the 20GHz signal is obtained sequentially by quadrupler and doubler frequency multiplier due to the capability of HEMT transistor. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#NT860435023 http://hdl.handle.net/11536/63043 |
顯示於類別: | 畢業論文 |