VERY SIMPLE AND ACCURATE COMPUTER-AIDED-DESIGN (CAD) MODELS DEVELOPED BY GENETIC PROGRAMMING FOR THE QUASI-STATIC ANALYSIS OF UNSHIELDED SUSPENDED AND INVERTED MICROSTRIP LINES

Yıl 2017, Cilt: 17 Sayı: 2, 3303 - 3309, 27.07.2017

Celal Yıldız , Hakan Kısıoglu

Öz

Very simple computer-aided-design
(CAD) models are
introduced to determine the characteristic parameters such as effective
permittivities and characteristic impedances of unshielded suspended and
inverted microstrip lines. CAD models are determined with the use of the
genetic programming (GP). The results of CAD models are compared with the
results of quasi-static analysis, experimental works available in the
literature and a commercial electromagnetic simulator. The comparison results
clearly show that CAD models proposed in this work are in very good agreement
with the simulation, theoretical and experimental results for the suspended and
inverted microstrip lines. The design parameter ranges in this
work are 2 ≤ ε_r2 ≤ 20, 0.5 ≤ w/b ≤ 10, 0.1 ≤ a/b ≤ 1.5, and the
respective characteristic impedances of unshielded suspended and inverted
microstrip lines are 28Ω ≤ Z₀ ≤ 185Ω, and 24 Ω ≤ Z₀ ≤ 159
Ω, respectively. It is observed that
the accuracies of CAD models proposed in this paper are good enough for
the most practical cases.

Anahtar Kelimeler

Suspended and inverted microstrip, CAD models, Genetic programming, Characteristic impedance

Kaynakça

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