LIU Qing, ZHOU Dong-fang, ZHANG De-wei, et al. Design of Filters Using the Hybrid Structure of Dual/Triple-Mode Substrate Integrated Waveguide and Ground Coplanar Waveguides[J]. Acta Electronica Sinica, 2018, 46(4): 952-960.
LIU Qing, ZHOU Dong-fang, ZHANG De-wei, et al. Design of Filters Using the Hybrid Structure of Dual/Triple-Mode Substrate Integrated Waveguide and Ground Coplanar Waveguides[J]. Acta Electronica Sinica, 2018, 46(4): 952-960. DOI: 10.3969/j.issn.0372-2112.2018.04.025.
A class of planar bandpass filters (BPFs) using dual/triple-mode substrate integrated waveguide (SIW) resonator and ground coplanar waveguides (GCPWs) are proposed according to miniaturization and high selectivity. The quasi-elliptic
asymmetric and non-transmission zero (TZ) response dual-mode SIW filters can be realized by changing resonance frequencies of TE
102
and TE
201
and the external couplings. Two GCPWs of the same size are etched on SIW cavity top metal plane;and the TE
102
TE
201
and two GCPWs in a single SIW cavity are combined to construct the diversifi
ed response fourth-order filters. On the basis of asymmetric and non-TZ response
the fundamental mode TE
101
can be shifted to the passband to form a fifth-order filter with wider bandwidth. The designed BPFs were fabricated and measured;and the simulated and measured results agree with each other
demonstrating the feasibility of using hybrid dual/triple-mode SIW and CPWs in a single cavity to design BPFs.