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Abstract
This paper attempts to apply an adaptive network-based fuzzy inference system (ANFIS) for analysis of the resonant frequency of a single-layer single-patch microstrip rectangular patch antenna with two equal size slots which are placed on the patch in the form of parallel to resonance edges. The resonant frequency is calculated as the position of the slots is shifted from the right endpoint to the left endpoint on the patch between −4.2 mm ≤ Xslot ≤ 4.2 mm with the steps of 0.1 mm. The designed antenna is proposed for downlink of X band satellite, broadcasting satellite service, fixed-satellite service uplink, satellite (Earth-to-space), radio navigation, mobile-satellite (Earth-to-space), and KU band which can be achieved at the resonant frequencies of 7.2 GHz, 12.2 GHz, 14.6 GHz, 17.5 GHz and 19.3 GHz. Next, High Frequency Electromagnetic Field Simulation software (ANSYS HFSS) results for the prototype microstrip antenna are compared with the values obtained through ANFIS system. It can be concluded that the adaptive network-based fuzzy inference system in such designs can be conveniently used due to fuzzy system’s high approximation capability and much faster convergence rate. The best results for our ANFIS system can be obtained if Gaussian membership is used which leads to the mean absolute error of 1.4653.
Highlights
Microstrip antennas have gained much attention for telecommunication engineers and researchers especially in recent years because they have very simple installation
Are versatile structures which can be modified by adding simple slots either
Original fuzzyfrom output with error function obtained from curve fitting method error functionand obtained curve fitting method
Summary
Microstrip antennas have gained much attention for telecommunication engineers and researchers especially in recent years because they have very simple installation They have many advantages, such as being cheap, light in terms of weight and easy to work with. In [11], the frequency in which a rectangular microstrip antenna resonates can be computed by using connectionist systems namely artificial neural networks. 84, ANFIS has been to simulate resonant frequencies at the same timeinand work, since the number of data points is limited to. 2. Resonant Frequency of Rectangular Microstrip Antenna with Slots Parallel to Resonance Edges. Presented by fringing at the end of the patch They are indicating the effects of the non-uniform medium and the Schneider (1969).
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