표 2. | Table 2. 제안된 여파기와 기존 연구결과와의 비교 | Comparison of the proposed filter with reported filters.
Parameters/Reference | [3] | [4] | [5] | [6] | This paper |
Passband(GHz) | 4.79~10.57 | 3.1~10.6 | 3.0~10.6 | 3.2~10.8 | 3.8~12.8 |
Insertion loss(dB) | <1.24 | <0.5 | <1.3 | <1.3 | <1.2 |
Return loss(dB) | >9 | 18 | >10 | >15 | 25 |
Upper stopband(GHz) | 19.21 | 16 | 17 | 16.3 | 20 |
Avg. group delay(ns) | 1.5 | 0.21 | 0.5 | <1.0 | 0.25 |
Structure | Planar | Planar | Planar | Planar | Multi |
Size(mm2) | 15.18×11.93 | 18.6×13.5 | 20.2×12.6 | 27×27 | 15.6×10.1 |
Permittivity(ϵr) | 2.65 | 3.38 | 2.2 | 2.65 | 3.38 |
Thickness(mm) | 0.5 | 0.81 | 0.51 | 1.0 | 0.81 |