Small and Bandwidth Efficient Multi-band Microstrip Patch Antennas for Future 5G Communications
In this paper, two multi-band microstrip patch antennas are proposed for 5G mobile devices. The proposed antennas have low profile structure. The first antenna is tri-band circular-shaped integrated on FR-4 epoxy with overall dimensions of 8 × 7.6 × 0.508 mm3. It operates at 40/50/64 GHz with a maximum gain of 5.19/5.23/8.269 dB respectively. The obtained bandwidths of this antenna are 2/9/5.83 GHz at 40/50/64 GHz respectively. The second one is a rectangular-shaped dual-band antenna printed on Rogers RT5880 with overall dimensions of 10 × 10.22 × 0.78 mm3. It operates at 28/39 GHz with a maximum gain of 7.73/7.02 dB respectively, and the achievable bandwidths are 2.19/2.84 GHz at 28/39 GHz respectively. These designs are very compact, directive and bandwidth efficient (greater than 5% of the center frequency). These characteristics make them suitable for mobile devices where the space is a major issue.
Keywords5G Compact microstrip antennas Multi-band microstrip antenna Circular microstrip antenna
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