Bandpass filters (BPFs) with generalized Chebyshev response using dual-and single-mode substrate integrated waveguide (SIW) resonators are proposed according to the miniaturization and high performances.The box-like topology with an additional cross-coupled path realized by the fundamental mode (TE

101

) of the dual-mode SIW cavity is proposed

and an additional transmission zero (TZ) is achieved.The traditional negative coupling structure is not required in the proposed structure

and two TZs can be realized;moreover

the structure has flexible responses that two TZs can be located

on the lower and/or upper of passband.To improve the selectivity

a complementary split-ring resonator (CSRR) etched into the fourth-order SIW filter to design a filter with an extended box-like topology is studied

and the fifth-order filtering function with three finite TZs can be realized.To verify the feasibility

a symmetric and an asymmetric response fourth-order BPFs with center frequency of 10GHz and a fifth-order BPF with center frequency of 5.8GHz are designed.The corresponding coupling matrixes of box-like topologies with nonresonating node (NRN) are also given to verify the proposed structure.Finally

the designed SIW BPFs are processed and measured.The responses of coupling matrixes

simulated and measured results are in good agreement

which demonstrates the feasibility of designed filters with high performances using the proposed structures.