Figure 4 | Scientific Reports

Figure 4

From: Design and implementation of magnetically–tunable quad–band filter utilizing split–ring resonators at microwave frequencies

Figure 4

Quad–band filter structure and simulation results: (a) Top view of the filter with the critical dimensions. (b) Electric field confinement of the device at resonance frequencies. E–field results are obtained in CST/MWS. The resonant frequency values of SRRs are 3.9, 4.4, 5.1, and 6.2 GHz. (c) The layout of the quad–band filter simulated in AWR/MWO with two ports and a grid size of 0.05 mm for the EM analysis. Light blue areas indicate the conductors laid on the Rogers RO4003C board. Auto ports are denoted as “A” at the input and output of the filter. (d) Stackup used in AWR/AXIEM where the bottom layer is defined (olive color) as ground plane and the air region (enclosed between red lines).

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