Microwave Frequency Doubler Design Using a Ring Resonator

作     者：Yangfan Liu Quan Xue and Chi Hou Chan Wireless Communications Research Centre, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 

会议名称：《2005年海峡两岸三地无线科技学术会》

会议日期：2005年

学科分类：080902[工学-电路与系统] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

关 键 词：frequency doubler harmonic suppression ring resonator 

摘      要：This paper proposes a compact, high conversion gain microwave frequency doubler structure using a ring resonator. The input and output ports are orthogonally connected to the ring resonator for fundamental frequency isolation. Therefore, this structure can eliminate the bulky output filter. On the other hand, the orthogonal ports can constructively combine both input and output second harmonic power to enhance the conversion gain. For demonstration, an S-band frequency doubler is designed and measurement results show an 8 % 3-dB gain-bandwidth with a 7 dB peak conversion gain, and over 20 dBc unwanted frequency components suppression for the whole operating band.