In this work, new structures of circular microstrip antenna based on slots are designed and simulated to operate with triple band applications. These slots are annular ring and rectangular shapes in different sizes. The annular ring slot is etched inside the circular patch while the other two rectangular slots are etched on the circular patch edge. The suggested antennas are simulated using version 13 of Ansoft High Frequency Structure Simulator (HFSS). The various parameters such as input impedance, reflection coefficient, gain, radiation patterns and surface currents were investigated. The present results observed that the optimum antenna designed is resonating at three frequencies 2.695, 5.799 and 8.323 GHz. Also, the bandwidths of simulated reflection coefficients at -10 dB are 106, 204 and 371 MHz which are identical with the S-, C- and X-bands frequencies, respectively. Therefore, the optimum antenna designed can be used in the space saving applications in addition to its important role in variety applications at these three frequency bands.
In this paper, a new design simulation of multi-forked microstrip patch antenna is presented. The proposed antenna design consists of rectangular patch structure loaded multi-slotted forked as a novel shaped of the patch, with Arlon AD320A (tm) dielectric. The coaxial probe feed technique and microstrip edge feed are used as a direct feed. The composite effect of integrating these multi-shapes forked patches techniques introducing the new multi-slotted patch. The best results of the proposed antennas were a wide impedance bandwidth which is 114% at 10.31 GHz resonance frequency for the microstrip line feed approach and maximum achievable gain is 6.3 dB for the coaxial probe feed approach. The simulated results of return loss, radiation patterns, and voltage standing wave ratio are obtained by using the finite element HFSS 13.0 software
This paper presents a design of E-slot loaded circular patch microstrip antenna used for communication purposes especially in civil and military applications.The antenna has been simulated and design on Arlon AD320A (tm) substrate with dielectric constant substrates of 3.2 and optimum dimensions of 29 × 24 × 1.7 mm 3 .The design requirements for the antennas include a VSWR < 2 for 50 Ω reference impedance and return loss is less than to-10 dB. The proposed antenna simulation is carried out using Ansoft HFSS. The E-slot microstrip patch antenna was then fabricated using microstrip coaxial probe feed arrangement and to be determined its S 11 and VSWR result. While the dual bandwidths measured for-10 dB refleection coefficient are 0.21 GHz and 0.812 GHz at range (11.9699-12.7820 GHz) or (1.6 % and 6.55%).
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