Dual-Band High Q-Factor Complementary Split-Ring Resonators Using Substrate Integrated Waveguide Method and Their Applications

Figure 10

Frequency response variations of the second proposed resonator versus frequency for various values of the varactor diode capacitance. The geometrical parameters are L = 2.2 mm,  = 0.2 mm, a₁ = 3.6 mm, a₂ = 3.6 mm, a₃ = 1.8 mm, a₄ = 1.2 mm, and a₅ = 3.1 mm for the upper CSRR and L = 2.4 mm,  = 0.2 mm, a₁ = 3.2 mm, a₂ = 4 mm, a₃ = 2 mm, a₄ = 0.9 mm, and a₅ = 3.5 mm for the lower CSRR and W = 11.5 mm and t = 1.3 mm.