WANG Lei, DING Rong-lin, WANG An-guo, et al. The Study of a Novel Combinatorial Nonperiodic Defected Ground Structure[J]. Acta Electronica Sinica, 2005, 33(2): 375-377.
WANG Lei, DING Rong-lin, WANG An-guo, et al. The Study of a Novel Combinatorial Nonperiodic Defected Ground Structure[J]. Acta Electronica Sinica, 2005, 33(2): 375-377.DOI：
A novel combinatorial nonperiodic defected ground structure (CNPDGS) with daul-stopband is proposed.The microwave circuits with the CNPDGS structure are simulated by finite-difference time-domain (FDTD) method.The influences of lattice dimensions on the characteristic of frequency are studied.The filters with daul-stopband formed by microstrip and proposed CNPDGS are designed and manufactured.The curves of the simulated results and measured results are presented.The measured results are in agreement well with the simulated results.For the filter
the pass-band between the two stopbands is tunable.The location and the bandwidth of the pass-band are varied with the sizes of lattice dimension.The distance between two stop-bands can be changed from 3.5GHz to 12GHz.The filter with the expected pass-band can be obtained by the selection of the lattice dimension.The filter with proposed CNPDGS can effectively reject the lower frequencies and higher frequencies in signal.
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