Novel rat-race hybrid coupler for RF front-end module

作者：Zhang Fei^*; Li Chengfang

来源：International Journal of Infrared and Millimeter Waves, 2007, 28(11): 937-943.

DOI：10.1007/s10762-007-9282-0

• rat-race hybrid coupler
• beeline compact microstrip resonant cell
• slow-wave effect
• miniaturization
• harmonic suppression

In this paper, a novel compact rat-race hybrid coupler incorporating an improved beeline compact microstrip resonant cell(IB-CMRC) is presented firstly. The size of the coupler is reduced by 46.5% than conventional one due to IB-CMRC's excellent slow-wave effect. The novel coupler possesses strong ability of high-order harmonic suppression (above 30 dB) in addition. The measured insertion loss is comparable to that of a conventional microstrip hybrid coupler. Great potential applications of this IB-CMRC can be explored in MICs and MMICs to reduce the circuits size, suppress harmonics and improve the overall performance of the RF front-end module.

• 出版日期2007-11
• 单位武汉大学