A New Ultracompact Narrow Bandpass Microstrip Filter Using Double-Negative Quasiplanar Cells

Figure 6

(a) and (b) of two cascaded DNG cells (where a = 12.9 mm,  = 4.3 mm, Ws = 5.5 mm, Cl = 10 mm, Cw = 11.4 mm, Cd = 1.4 mm, gs = 0.2 mm, and s = 2.1 mm).

(a)

(b)