Electrical properties of coplanar transmission lines on lossless and lossy substrates

Adaptive Neuro-Fuzzy Models for Conventional Coplanar Waveguides

“…In order to further validate the presented method, the characteristic impedance test results of ANFIS model are compared with the MMICTL [23] and measured [24][25][26] results in Figure 5. It is clear from this figure that the ANFIS results agree quite well with the results of measured works and also with the results of MMICTL.…”

“…There are small differences between the ANFIS model results and the experimental results. These differences are expected because it is assumed that the ground planes extend to infinity and the conductor thicknesses are zero for the ANFIS models, however, the CPW structures of the experimental works [24][25][26] have finite size ground planes in the range of 1270.0 µm and 3505.2 µm, and the CMT [3] ANFIS Measured [26] MMICTL [23] (c) S = 508 µm, h = 635 µm, and ε r = 9.6 Figure 5. Comparison of the measured and calculated characteristic impedances obtained by using ANFIS, CMT [3], and MMICTL [23] for CCPWs.…”

“…The adaptation is carried out after the presentation of each set (ε r , d/h and S/d) until the calculation accuracy of the ANFIS is deemed satisfactory according to some criterion (for example, when the error between target and the actual output for all the training set falls below a given threshold) or when the maximum allowable number of epochs is reached. The training and test data sets used in this article have been obtained from previous numerical methods [3,14], simulation [23] and experimental works [24][25][26] results. The number of epochs used for training was 150.…”

Opto-electronic Correlation Measurements on Damaged Si-on-sapphire Using Coplanar Waveguides

“…Side and plan views of the coplanar waveguide geometry. Opto-electronic sampling using coplanar waveguides plane, and an impedance slightly less than 50Q [12]. Gap widths were 10, 20 of 50 pm.…”