Wideband Multiport Antennas

Area of Science:

• Electrical Engineering
• Electromagnetics
• Antenna Theory

Background:

• Modern wireless communication demands antennas supporting multiple frequency bands and services.
• Existing multi-port antennas often lack wideband performance or sufficient port independence.

Purpose of the Study:

• To propose and characterize a novel wideband four-port antenna.
• To achieve high isolation and performance across the 2-6 GHz spectrum.
• To enable simultaneous operation of diverse wireless systems.

Main Methods:

• Design and implementation of one-, two-, and four-port antennas.
• Optimization of ground plane sections to enhance port isolation.
• Characterization of reflection coefficients, port isolation, correlation, gain, and efficiency.

Main Results:

• Reflection coefficients better than 10 dB across the 2-6 GHz band.
• Port isolation exceeding 15 dB (2.3-6 GHz) and 10 dB (full band) for two- and four-port antennas.
• High gain (3.1-6.75 dBi) and efficiency (62-98%) achieved.

Conclusions:

• The proposed four-port antenna demonstrates wideband operation (2-6 GHz) with superior isolation.
• This antenna is suitable for advanced applications like 5G, WiFi 7, and MIMO systems.
• It enables full-duplex operation and simultaneous support for multiple wireless standards.