Differential and Single-Ended Microstrip Lines Loaded with Slotted Magnetic-LC Resonators

Figure 11

Photograph of a 3-bit RF bar code (codified as “101”) (a) and measured frequency response (b). For completeness, the measurement for the code “010” is also shown. The substrate is Rogers RO3010 with thickness ℎ=1.27mm, dielectric constant 𝜀_𝑟=11.2, and loss tangent tan𝛿=0.0023. The line width is designed to minimize the insertion loss with the presence of the MLCs symmetrically etched, that is, 𝑊=3.13mm. The MLC dimensions are 𝑤₁=5.2mm, 𝑤₂=𝑠=0.2mm, 𝑙₁=1.9mm, 𝑙₂(2.6GHz)=6.32mm, 𝑙₂(2.8GHz)=6mm, 𝑙₂(3GHz)=5.72mm, and 𝑙₃=6mm. The distance between adjacent resonators is set to that for which interresonator coupling can be neglected, that is, 3 mm. The lateral displacement to set the logic state “1” is 1 mm.

(a)

(b)