Optimum Design of Novel UWB Multilayer Microstrip Hairpin Filters with Harmonic Suppression and Impedance Matching

Table 3

Parameters of designed proposed multilayered microstrip hairpin filter (Example 2).

𝑁=5, ILSB = 30 dB, ILPB = 0.1 dB, UWB, 𝑍𝑠  = 50 Ω,
𝑍𝑙  = 50 Ω, 𝑤𝑡𝑖  = 1, 𝑎𝑖,1 = 𝑎𝑖,2 and 𝑙𝑖,2 = 𝑙𝑖+1,1
Initial value	Design and optimization
𝑎1,1 = 2 mm	𝑎1,1 = 1.83 mm
𝑎2,1 = 2 mm	𝑎2,1 = 0.72 mm
𝑎3,1 = 2 mm	𝑎3,1 = 0.60 mm
𝑎4,1 = 2 mm	𝑎4,1 = 1.00 mm
𝑎5,1 = 2 mm	𝑎5,1 = 1.18 mm
𝑑1 = 3 mm	𝑑1 = 2.64 mm
𝑑2 = 3 mm	𝑑2 = 2.53 mm
𝑑3 = 3 mm	𝑑3 = 0.10 mm
𝑑4 = 3 mm	𝑑4 = 2.36 mm
𝑑5 = 3 mm	𝑑5 = 1.11 mm
𝑠1 = 1 mm	𝑠1 = 1.18 mm
𝑠2 = 2 mm	𝑠2 = 1.86 mm
𝑡1 = 1 mm	𝑡1 = 1.06 mm
𝑡2 = 2 mm	𝑡2 = 2.38 mm
𝑙1,2 = 5 mm	𝑙1,2 = 6.87 mm
𝑙2,2 = 5 mm	𝑙2,2 = 5.43 mm
𝑙3,2 = 5 mm	𝑙3,2 = 5.44 mm
𝑙4,2 = 5 mm	𝑙4,2 = 5.31 mm
𝑤𝑖 = 1 mm	𝑤𝑖 = 1 mm