A Wide-Band Low-Profile Antenna for a High-Integration Phased Array System

Area of Science:

• Electrical Engineering
• Electromagnetics
• Antenna Theory

Background:

• Phased array systems require compact, wide-band antennas for high integration.
• Existing tightly coupled antennas often have limitations in element spacing and parasitic radiation.

Purpose of the Study:

• To present a wide-band, low-profile antenna suitable for high-integration phased array systems.
• To address challenges in element spacing and parasitic radiation for practical engineering applications.

Main Methods:

• Implementation of a tightly coupled array antenna design.
• Analysis of parasitic radiation and development of a suppression method.
• Modular manufacturing approach using four-element units for flexible assembly.

Main Results:

• The antenna operates effectively over the X-K band (8 GHz-18.5 GHz).
• Achieved a scanning capability of ±60 degrees in both E- and H-planes.
• Demonstrated excellent pattern and scanning radiation performance, validated by simulations and measurements.

Conclusions:

• The developed antenna meets the requirements for high-integration phased array systems.
• The modular design and parasitic radiation suppression method facilitate practical engineering applications.
• The antenna's performance is suitable for soldering to Ball Grid Array (BGA) T/R chips.