研究目的
To develop a circularly-polarized differentially-fed magneto-electric dipole antenna array for 5G applications, achieving wide bandwidth and high gain.
研究成果
The proposed CP differentially-fed ME-dipole antenna array achieves a wide overlapping impedance and axial ratio bandwidth of 32.2% (52.2-72.2 GHz) and high broadside LHCP gain (10.2-11.8 dBic), covering the 5G mm-wave band. It retains advantages of the previous LP design, such as low back radiation and compatibility with differential ICs, demonstrating effectiveness for 5G applications.
研究不足
The gain measurement is limited to 70 GHz due to available equipment (CP SGHs data only up to 70 GHz). The design may have complexities in fabrication and integration with differential circuits, and performance could be affected by feed network losses.
1：Experimental Design and Method Selection:
The antenna is designed using the sequential rotation technique (SRT) to achieve circular polarization, modified from a previous linearly-polarized design. It is simulated using ANSYS Electronics
2：2 software to optimize for broadside LHCP gain and bandwidth covering 57-71 GHz. Sample Selection and Data Sources:
A prototype is fabricated on Rogers RT/Duroid? 5880 PCB laminate.
3：List of Experimental Equipment and Materials:
PCB laminate (Rogers RT/Duroid? 5880), differential feed network, waveguide feed for measurement, antenna measurement system.
4：Experimental Procedures and Operational Workflow:
The antenna is fabricated and integrated with a differential feed network. Radiation characteristics are measured using an antenna measurement system, with reflection coefficients, axial ratio, and gain measured across frequencies.
5：Data Analysis Methods:
Simulated and measured data are compared for impedance bandwidth, axial ratio bandwidth, and gain, using standard definitions and software tools.
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