標題: 低相位雜訊Ka頻段振盪器
Low Phase Noise Ka-band Oscillator
作者: 莊凱翔
Kai-Cheung Juang
張志揚
Dr. Chi-Yang CHang
電信工程研究所
關鍵字: 振盪器;Ka頻段振盪;相位雜訊;共平面波導的串聯開路支線;微波混成積體電路;Oscillator;Ka-band Oscillator;Phase Noise;CPW open circuit series stub;Hybrid MIC
公開日期: 1998
摘要: 本論文利用微波混成積體電路(Hybrid MIC)的方式來設計Ka頻段振盪器,之中必須克服元件高頻增益不足、寄生效應的問題。此外在此頻段亦不容易得到高Q值的諧振腔,所以設計上使用由FET閘極為輸出的電路組態,而諧振腔是使用共平面波導的串聯開路支線。其電路量測結果如下:最大輸出功率為11dBm,而相位雜訊在離主訊號100KHz處最佳為-95dbc/Hz。此結果要比文獻上採用MMIC製程及使用介質諧振腔(DR)所製作的振盪器有更好的性能
In this thesis, we use Hybrid MIC technology to design oscillators working at Ka-band. We have to overcome the problem of the limited high frequency gain of the HEMT device and circuits parasitic effects. And moreover, it is difficult to achieve a high Q resonator at this frequency band. Therefore, a new circuit structure is proposed, in which the output signal takes from the gete of FET and the oscillating tank comprises of a CPW open circuit series stub. The measured results show that the maxmuin oscillator output power is 11dBm and the best phase noise at 100KHz offset is -95dBc/Hz. The performances mentioned above are better than that of MMIC oscillators and even DR (Dielectric Resonator) oscillators published in the literature.
URI: http://140.113.39.130/cdrfb3/record/nctu/#NT870435026
http://hdl.handle.net/11536/64485
Appears in Collections:Thesis