A Single-Fed Multiband Antenna for WLAN and 5G Applications.

Area of Science:

• Electromagnetic Engineering
• Antenna Theory and Design

Background:

• Development of compact, multiband antennas is crucial for diverse wireless applications.
• Existing antenna designs often struggle to cover both microwave and millimeter-wave frequencies efficiently.
• A single-feed antenna capable of operating across these bands presents a significant design challenge.

Discussion:

• A slotted conical patch connected to a small triangular patch antenna is proposed.
• The antenna exhibits multiband characteristics, operating at 2.45 GHz, 5.0-6.3 GHz, and 23-28 GHz.
• Its compact dimensions (0.35λ₀ × 0.35λ₀ × 0.004λ₀ at 2.4 GHz) are notable.

Key Insights:

• The proposed antenna successfully integrates microwave and millimeter-wave capabilities with a single feed.
• Experimental results validate simulated performance, showing good agreement across all operational bands.
• Key advantages include reduced size, design simplicity, and broad multiband performance.

Outlook:

• The antenna is suitable for wireless local area network (WLAN) and fifth-generation (5G) wireless communication devices.
• Further research could explore integration into specific 5G device architectures.
• Optimization for even wider bandwidths or additional frequency bands may be considered.