Focused on the requirements of multi-band and miniaturization of passive devices,designed a 3 dB 90° coupler based on low temperature co-fired ceramic(LTCC)technology.The miniaturization and ultra-wide band of the 3 dB coupler are realized by using snaking and spiral broadside-coupled stripline.The simulation model was designed by ANSYS HFSS software,and the coupler was fabricated by LTCC technology.The measurement results are almost consistent with the simulation results.The operating frequency of the 3 dB coupler is 1-2.7 GHz,the size is 3.2 mm×1.6 mm×0.95 mm,the phase imbalance is less than±5°,the amplitude imbalance is less than 2 dB,the insertion loss is less than 2 dB,the isolation is greater than 15 dB,and the input standing wave ratio is less than 1.5.
关键词
3dB电桥/低温共烧陶瓷/宽边耦合/小型化/超宽带
Key words
3 dB coupler/LTCC/broadside-coupled/miniaturization/ultra-wide band
维普
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