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High Gain Flat-Panel mmWave Antenna Array.

Seong-Mo Moon¹, Junhyuk Cho², Han Lim Lee²

¹Satellite Payload Research Section, ETRI, Daejeon 34129, Republic of Korea.

Sensors (Basel, Switzerland)

|December 9, 2023

Summary

This study presents a novel flat-panel antenna array for millimeter wave (mmWave) communication, achieving high directivity and gain without extra layers. The developed 4x4 array demonstrates a peak gain of 21.3 dBi at 28.5 GHz for the n257 band.

Keywords:

flat-panel antenna array high gain antenna mmWave antenna mmWave antenna array

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Area of Science:

Electrical Engineering
Antenna Theory
Wireless Communication

Background:

Millimeter wave (mmWave) communication demands efficient chip-antennna integration.
Planar antenna arrays are crucial for compact mmWave systems.
High directivity and gain are essential for robust mmWave connectivity.

Purpose of the Study:

To introduce a novel flat-panel antenna array for mmWave applications.
To achieve high directivity and augmented gain without superstrate layers.
To validate the performance of the proposed antenna array for the n257 band.

Main Methods:

Design and simulation of a 4x4 flat-panel antenna array at 28 GHz.
Fabrication and measurement of the array and its standalone element.
Integration with a 1x16 mmWave feed network for comprehensive testing.

Main Results:

The standalone array element achieved a 20.6% bandwidth centered at 28.5 GHz.
The 4x4 array demonstrated a peak gain of 21.3 dBi at 28.5 GHz.
A half power beamwidth of 15° and gain variation < 3 dB were recorded.

Conclusions:

The novel flat-panel antenna array offers high directivity and gain for mmWave systems.
The design eliminates the need for additional superstrate layers, simplifying integration.
The validated performance confirms its suitability for 5G mmWave applications like the n257 band.