A Miniatured Asymmetric Coplanar Strip (ACS) Triple-Band Monopole Antenna for Emerging LTE/5G/WLAN Wireless USB Dongle Applications

There is a substantial demand for Long Term Evolution (LTE), 5$^{th}$ Generation (5G), and Wireless Local Area Networks (WLAN) With the ongoing trend of device miniaturization, the significance of compact antennas, such as printed monopoles found in USB dongles, cannot be ignored. This research paper examines antennas’ important role in advancing wireless communication. This study presents a triple-band antenna created using the Asymmetric Coplanar Strip (ACS) technique and expressly designed to reduce antenna size. The antenna operates efficiently across three important frequency bands: 1.8 GHz for LTE, 3.5 GHz for 5G, and 5.15 GHz to 5.825 GHz for WLAN. In the course of this research, the simulation outcomes have yielded frequencies of 1.83 GHz, 3.51 GHz, and 5.435 GHz, accompanied by corresponding return loss values of -19 dB, -13 dB, and -23 dB. In contrast, the empirical fabrication endeavors have yielded disparate frequency responses, specifically 3.71 GHz, 3.61 GHz, and 4.63 GHz, while concurrently resulting in distinct return loss magnitudes of -16 dB, -8 dB, and -6 dB.