Research Article
A Frequency-Tunable SRR-Adopted Two-Pole Waveguide Filter Operating below the Cutoff Frequency
Figure 5
Different orientation of two rings: (a) 180° and 0°, (b) 0° and 180°, (c) 135° and −45°, (d) 135° and 45°, (e) 90° and 90°, and (f) 90° and −90°.
(a) |
(b) |
(c) |
(d) |
(e) |
(f) |