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2014-11-05

Substrate Integrated Waveguide Filter with Improved Stopband Performance Using LTCC Technology

By Ping-Juan Zhang and Min-Quan Li
Progress In Electromagnetics Research C, Vol. 54, 155-162, 2014
doi:10.2528/PIERC14100301

Abstract

A novel multi-layer third-order substrate integrated waveguide (SIW) bandpass filter with improved lower stopband performance is proposed. TE201-mode in folded-SIW cavity is utilized to implement negative cross coupling, and the TE101-mode is taken as a non-resonating node (NRN) for implementing bypass coupling. A circular aperture etched on the middle metal layer is used to realize coupling between source and the second SIW cavity. Then, three transmission zeros located below the passband can be obtained to improve stopband attenuation. Meanwhile, better spurious suppression performance above passband is achieved. A filter sample is designed and fabricated with multi-layer low-temperature co-fired ceramic (LTCC) technology. The measured S-parameters agree well with the simulated ones, with its predicted good performance.

Citation


Ping-Juan Zhang and Min-Quan Li, "Substrate Integrated Waveguide Filter with Improved Stopband Performance Using LTCC Technology," Progress In Electromagnetics Research C, Vol. 54, 155-162, 2014.
doi:10.2528/PIERC14100301
http://jpier.org/PIERC/pier.php?paper=14100301

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