Design of a Compact Wideband Triangular Slot Antenna for C/X-Band

Abstract

This paper proposes a compact triangular slot structure antenna design, the antenna covers the C/X frequency band, including ISM (5.725-5.875GHz) and Wifi 6E (5.925-7.125GHz). The designed triangular slot is evolved from the square slot, so the overall size is smaller than the structure of the square slot, and the overall antenna size is 32×32×0.254 mm ³ . For the reflection coefficient below -10dB, the bandwidth is 57.5% (5.17-9.34GHz), and it has good radiation direction and good antenna gain in the 5.7GHz and 8.8GHz impedance matching frequency bands, making this antenna a C/X-Band frequency band good choice. The antenna is fed by a 50 Ohm SMA connector. The front is a long strip antenna, and the back is a triangular and two small rectangular defect structures to increase the overall bandwidth. The average gain of the antenna in the frequency band is 5.1dBi.