(a) Modified unit-cell geometry with series chip capacitors and shunt inductors to introduce low frequency resonance in the leaky-wave region of the K-ω diagram. This approach allowed us to miniaturize the LWA design and to operate at L-band. Dimensions are: l ₁ = 105, l ₂ = 120, w ₁ = 60, w ₂ = 30, w ₃ = 80, l ₃ = 75, l _stub = 131.5 (mils), and (b) its equivalent circuit model as a cascade of uncoupled and coupled sections to analytically calculate the unit-cell T-matrix. (c) Dispersion curves when coupling between the lines (L _m  = 10⁻³ pH, C _m  = 10⁻³ pF) is negligible and (d) when L _m  = 5.45 nH, C _m  = 1.15 pF.