A Compact Wideband Patch Antenna for Ka-Band and 5G mm-Wavelength Applications

In the current era, 5G technology is crucial for fast and secure data communication. A wide bandwidth allows high data rates and the ability to simultaneously manage large amounts of information. The recommended antenna enables a wide bandwidth of 9.94 GHz, covering frequencies from 27.92 GHz to 37.86 GHz, ideal for Ka-band and 5G applications. This compact antenna, with dimensions of 7×8×0.8 mm3, employs Rogers R04350 (lossy) material as the substrate, featuring a dielectric constant (∊r) of 3.66 and a loss tangent (δ) of 0.0037. It achieves a peak gain of 7 dBi and a directivity of 7.99 dBi at 37.86 G Hz, along with a radiation efficiency of 80 %. The antenna also demonstrates a minimum return loss of −27.76 dB at 35.92 GHz and maintains VSWR within the acceptable range across the entire frequency band. These outcomes affirm that the antenna is highly suitable for 5G mobile communication and various Ka-band applications.