A novel double-folded quarter mode substrate integrated waveguide (DFQMSIW) filter is designed in low temperature co-fired ceramic (LTCC). This filter consists of multi-layer substrate integrated waveguide. More than 93.75% of the area of the filter is effectively decreased compared with original substrate integrated waveguide (SIW) filter for the technologies of Half-Mode and Folded are applied. Meanwhile, the dimensions are further obtained reduction because of the technologies of LTCC and the vertical dimensional cavities configuration. The fabricated insertion loss and return loss are 1.9 dB and 13.5 dB, respectively.
2. Hong, W., B. Liu, Y. Q. Wang, Q. H. Lai, and K. Wu, "Half mode substrate integrated waveguide: A new guided wave structure for microwave and millimeter wave application," (Keynote Talk) Joint 31st Int. Conf. on Infrared and Millimeter Waves and 14th Int. Conf. on Terahertz Electronics, Shanghai, September 18-22, 2006.
3. Chen, Y. J., W. Hong, and K.Wu, "Half mode substrate integrated waveguide (HMSIW) directional filter," IEEE Microwave and Wireless Components Letters, Vol. 17, No. 7, 504-506, 2007.
4. Wu, L.-S., X.-L. Zhou, W.-Y. Yin, C.-T. Liu, L. Zhou, J.-F. Mao, and H.-L. Peng, "A new type of periodically loaded half-mode substrate integrated waveguide and its applications," IEEE Trans. Microwave Theory Tech., Vol. 58, No. 4, 882-893, 2010.
5. Memon, M. U. and S. Lim, "Frequency-tunable compact antenna using quarter-mode substrate integrated waveguide," IEEE Antennas & Wireless Propagation Letters, Vol. 14, No. 3, 1606-1609, 2015.
6. Cao, H., S. He, H. Li, and S. Yang, "A compact wideband bandpass filter using novel csrr loaded qmsiw resonator with high selectivity," Progress In Electromagnetics Research C, Vol. 41, 239-254, 2013.
7. Zhu, Y., "A source-load coupled bandpass filter using one-eighth mode substrated waveguide cavity," 31th URSI General Assembly and Scientific Symposium, 1-4, 2014.
8. Grigoropoulos, N., B. S. Izquierdo, and P. R. Young, "Substrate integrated folded waveguides (SIFW) and filters," IEEE Microw. Wirel. Compon. Lett., Vol. 15, No. 12, 829-831, 2005.
9. Che, W., L. Geng, K. Deng, and Y. L. Chow, "Analysis and experiments of compact folded substrate-integrated waveguide," IEEE Trans. Microwave Theory Tech., Vol. 56, No. 1, 88-93, 2008.
10. Chen, X.-P. and K.Wu, "Substrate integrated filters: Design techniques and structure innovations," IEEE Microwave Magazine, Vol. 15, No. 6, 121-133, 2014.
11. Wu, L.-S., X.-L. Zhou, and W.-Y. Yin, "A novel multilayer partial H-plane filter implemented with folded substrate integrated waveguide," IEEE Microwave Wireless Compon. Lett., Vol. 19, No. 8, 494-496, 2009.
12. Yang, G., W. Liu, and F. Liu, "Two new electric coupling structures for double folded substrate integrated waveguide cavity filters with transmission zeros," Microwave and Optical Technology Letters, Vol. 55, No. 8, 1815-1818, 2013.
13. Shen, G. W., W.-Y. Yin, X.-W. Sun, and Q.-F. Wei, "A novel LTCC multilayer SIW linear phase filter," Microwave Opt. Technol. Lett., Vol. 51, No. 10, 2357-2360, 2009.
14. Tsai, W.-L., T.-M. Shen, B.-J. Chen, T.-Y. Huang, and R.-B. Wu, "Triband filter design using laminated waveguide cavity in LTCC," IEEE Trans. Compon. Package. Manuf. Tech., Vol. 4, No. 6, 957-965, 2014.
15. Huang, T. Y., T. M. Shen, and R. B. Wu, "A miniaturized bandpass filter using quadruple folded laminated waveguide cavity resonators in LTCC," IEEE Asia-Pacific Microwave Conference Proceeding (APMC), 99-102, 2010.
16. Jin, C., et al., "Quarter-mode substrate integrated waveguide and its application to antennas design," IEEE Transaction on Antennas and Propagation, Vol. 61, No. 6, 2921-2928, 2013.
17. Chen, X.-P. and K.Wu, "Substrate integrated waveguide filter: Basic design rules and fundamental structure features," IEEE Microwave Magazine, Vol. 15, No. 5, 108-116, 2014.