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《Research & Progress of SSE》 2018-06
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Cross-coupled Bandpass Filter Based on Isosceles Right Triangle Substrate Integrated Waveguide

ZHANG Sheng;CHENG Junjie;TANG Shoufeng;TONG Minming;BAO Licun;School of Information and Control Engineering,China University of Mining and Technology;China Communications Technology Co.,Ltd.;  
An isosceles right triangle substrate integrated waveguide(IRTSIW)was proposed,and a four-order compact cross-coupled bandpass filter was presented and fabricated.Sshape slots were introduced to act as the electric coupling structure.By utilizing mixed electric and magnetic coupling technology,the IRTSIW bandpass filter possesses one transmission zero at each side of the passband,which improve the selectivity of the filter.The center frequency is9.7 GHz,the fractional bandwidth is 4% with the in-band insertion loss of less than 1.4 dB,the attenuation of transmission zeros out of band is more than 40 dB.The measured results are basically consistent with the simulated results
【Fund】: 国家重点研发计划项目(2016YFC0801800)
【CateGory Index】: TN713
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