Characteristic Analysis of Reverse-L-Shaped Microstrip-Fed Large-Bandwidth Printed Slot Antenna

摘要

The characteristics of a reverse-L-shaped microstrip-fed structure is analyzed using the finite difference time domain method, and the characteristics of the proposed antenna are compared with a conventional antenna. The return loss, radiation resistance, and voltage-standing weave ratio in the frequency domain are calculated by Fourier transforming the time domain results. When the purposed feed structure is used, the bandwidth is extended in proportion to the slot width and the radiation resistance has the low value. When the slot width is 16 mm, the experimental bandwidth is approximately 50% (-10 dB ≥ S_(11)) at the center frequency of 2.3 GHz. In addition, the experimental data for the impedance and radiation pattern of the antenna are described. They are in good agreement with the calculated results.