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Updated: Jul 10, 2025

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

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Design of a Tripod-Shaped Radiator Patch Antenna for Ultra-Wideband Direction Finding.

Sangwoon Youn¹, Sungsik Ohm², Byung-Jun Jang³

¹Department of Electronic and Electrical Engineering, Hongik University, Seoul 04066, Republic of Korea.

Sensors (Basel, Switzerland)

|November 25, 2023

Summary

This study introduces a compact ultra-wideband (UWB) antenna for smart device direction-finding. The novel single-radiator multiple-port (SRMP) design achieves accurate direction of arrival estimation with minimal error.

Keywords:

UWB direction finding array system miniaturization channel impulse response single radiator multiple ports

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Published on: May 2, 2018

Area of Science:

Electrical Engineering
Electromagnetics
Antenna Theory

Background:

Miniaturization of antenna systems is crucial for the advancement of Ultra-Wideband (UWB) technology in smaller smart devices.
Effective direction-finding (DF) using UWB channel impulse response (CIR) data requires further research and innovative antenna solutions.

Purpose of the Study:

To propose and validate a novel Single-Radiator Multiple-Port (SRMP) antenna design for UWB direction-finding systems in smart devices.
To develop a miniaturized antenna solution that replaces traditional array systems for UWB DF applications.

Main Methods:

A unique tripod-shaped patch radiator was designed and optimized for broadband performance and reduced mutual coupling.
The proposed SRMP antenna was fabricated and its electromagnetic characteristics, including reflection coefficient, mutual coupling, and radiation patterns, were experimentally verified.
Direction of Arrival (DoA) performance was evaluated using a DW3000 chip and measured CIR data.

Main Results:

The fabricated SRMP antenna demonstrated a wide operating frequency band (5.8 GHz to 11.9 GHz) and excellent mutual coupling (-14.8 dB at 8 GHz).
Measured maximum gains were 3.5 dBi for port 1 and 2.9 dBi for port 2.
The antenna system achieved low root-mean-square (RMS) errors in DoA estimation (1.57° at 30 cm, 4.58° at 60 cm).

Conclusions:

The proposed SRMP antenna is a viable miniaturized solution for UWB direction-finding systems, offering good performance with a single radiator.
The experimental results validate the effectiveness of the SRMP antenna design for accurate DoA estimation in smart device applications.