A compact triple slotted Rectangular Microstrip Patch Antenna with Metamaterial ground for Sub-6 GHz/5G communication

Different RMPA architectures are proposed in this paper to realize an antenna to operate in sub-6 GHz for 5G communications. The antenna design is optimized in steps to achieve a compact antenna with high performance. A basic Rectangular Patch Antenna (RPA) structure is initially presented, which operates in 3.13 GHz. The initial structure is examined and optimized by adding a Metamaterial (MTM) ground. The modified RPA with MTM ground exhibits resonance at 3.27 GHz, 3.78 GHz and 3.92 GHz. RPA structure is again tuned by adding three slots at top right edge of antenna patch and a Triple Slotted Rectangular Microstrip Patch Antenna (TSRMPA) with MTM ground is finally realized. The presented antenna is tuned to operate at sub-6 GHz by modifying the structure without altering the dimension. The TSRMPA with MTM ground resonates at 3.5 GHz with good return loss performance of -30.77 dB and gain of 5 dB. The dimension of compact TSRMPA with MTM ground is 30.2 x 36.4 mm
²
. These antennas are investigated using High Frequency Structural Simulator (HFSS) software. Finally, good concurrence between simulated and tested result is presented to prove the functioning of proposed antenna design.