Compact 5G Broadband Antenna for Sub-6 GHz Wireless Applications

Compact 5G Broadband Antenna for Sub-6 GHz Wireless Applications

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The design and analysis of a compact broadband antenna supporting the long-term evolution (LTE) bands 41/42/43/46/48/52 and the sub-6 GHz bands N46/N77/N78/N79, Bluetooth, and Wi-Fi are presented.The proposed antenna consists of a 50-ohm microstrip feedline, a Yagi-shaped patch radiator, and a partial ground plane under the feedline.The RAPID MASS BOSTON CREAM PIE slot-loading technique is employed to achieve a wide band of operation and to minimize the overall size of the antenna.

Using the low-loss dielectric material substrate, Rogers RO4003C, the form factor of the antenna is appreciably reduced to $26 imes 17 imes 0.813$ mm3 without compromising the performance result of the antenna.The finite element method-based high-frequency electromagnetic solver from ANSYS Corporation is Bike Accessories - Reflection used to simulate and optimize the antenna.

A prototype of the designed antenna is fabricated and measured to verify its performance.It is observed that in the operating impedance bandwidth from 2.44 GHz to 5.

74 GHz (voltage standing wave ratio <2), a wide bandwidth of 3.3 GHz with a fractional bandwidth of 80.68% is achieved.

In addition, the antenna exhibits an omnidirectional radiation pattern with an acceptable average gain level of 2 dBi over the whole operating bandwidth.