Conclusion
This work presented a 4 × 4 Butler matrix to feed the direction-switched
beamforming antenna array for 3.5 GHz 5G wireless application. The
desired result was achieved via
Computer Simulation Technology
(CST). So, the finalised proposed design for BM and antenna array system
array was fabricated on single layer Rogers RT5880LZ. The measured
result of the BM and antenna array system showed a good agreement
compared to the simulated result, which successfully steered radiation
beams of
-34o,
-40o, +32o, and
+35o.
The
overall size of the antenna and Butler matrix was 121mm × 143mm. The
result demonstrated that the proposed four-beam antenna array revealed a
good agreement for communication system, as well as beam-forming for 5G
wireless application.