Effect of substrate thickness on the performance of a circular-disk microstrip antenna

Generalized neural method to determine resonant frequencies of various microstrip antennas

“…To calculate the resonant frequencies by using the single neural model, the equivalent patch dimensions for the circular and triangular MSAs are obtained by equating the patch areas of the circular and triangular MSAs to that of an equivalent rectangular microstrip antenna. It was shown in this study that the resonant frequency results calculated by using a single neural model are in very good agreement with the experimental results available in the literature [9,11,16,20,21,24,27,31,34,43,44] for the rectangular, circular and triangular MSAs.…”

Concurrent Neuro-Fuzzy Systems for Resonant Frequency Computation of Rectangular, Circular, and Triangular Microstrip Antennas

“…Single neural models were proposed in [61,62] for simultaneously calculating the resonant frequencies of the rectangular, circular, and triangular MSAs. The results of single neural models [61,62] are not in very good agreement with the experimental results available in the literature [4,5,8,12,13,16,19,22,23,30,31]. For this reason, a hybrid method [63] based on a combination of ANN with ANFIS has been presented to improve the performance of single ANN models.…”

“…The selection of a data generator depends on the application and the availability of the data generator. The training and test data sets used in this paper have been obtained from the previous experimental works published by 11 sources [4,5,8,12,13,16,19,22,23,30,31], and are given in Tables 1, 2, and 3 for the rectangular, circular, and triangular MSAs, respectively. Total 68 data sets are listed in Tables 1-3.…”

Analysis of circular microstrip antennas on low‐ and high‐relative‐permittivity substrates

“…In Figure 5(b), four experimental points are also shown for the input resonant resistance. They have been obtained from Davidovitz and Lo [4] and Dahele and Lee [21]. All models show decreases in the resonance frequency with increase in the substrate thickness.…”