Optimization of compact photonic bandgap microstrip structures

A new optimization approach for high performance meander EBG filter designs

“…As shown in Table 2, the proposed new structure shows a significant reduction in ripple level (79.33%) and also an increase in bandwidth of the stopband (145.94%) simultaneously. This new approach is shown to be superior over all the other optimized meander structures discussed previously [6]. The results obtained reveal that the etched circle at the bend below the MLIN is a key cause of high ripple level in a meander EBG structure.…”

“…However, the miniaturization comes at the price of a high ripple level in the passband, thus degrading the performance of the structure. Several optimization techniques were suggested in [6] to lower the ripple level mainly through the modification of the MLIN.…”

“…In this paper, the optimization techniques in [6] are examined and evaluated. Limitations of the existing optimization techniques are identified.…”

“…The meander geometry causes a large increase in the ripple level in the passband and a reduction in the bandwidth of the stopband [5]. Several techniques were proposed in [6] to reduce the high ripple level in this meander EBG structure. The cause of a high ripple level and the suggested optimization techniques are tabulated in Table 1.…”

The effects of ground planes in modern electromagnetic applications

“…The resonant frequency is determined by the physical length of the resonator. Base on a study on the meander microstrip line [102], the relation between the length of the resonator and the resonant frequency can be expressed…”