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High Gain Slot Array Antenna at 110 GHz Based on Computer Numerical Control.

Zhen Tan¹, Yun Zhao¹, Jiangqiao Ding¹

¹School of Electronic & Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China.

|October 28, 2023

Summary

A novel waveguide-slot antenna achieves high gain at 110 GHz using a low-loss feeding network and an eight-way power divider. This design offers a simple structure for upper millimeter-wave and sub-terahertz applications.

Keywords:

high gain antenna millimeter wave slot array antenna

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Area of Science:

Electrical Engineering
Antenna Theory

Background:

High-gain antennas are crucial for millimeter-wave and sub-terahertz (THz) applications.
Existing designs often face challenges with complexity and signal loss.

Purpose of the Study:

To present a novel waveguide-slot antenna design for high gain at 110 GHz.
To develop a low-loss feeding network for efficient power distribution.

Main Methods:

Design and fabrication of a compact eight-way power divider integrated with a waveguide-slot array.
Implementation using a two-layer structure with channeled substratum and slotted superstratum.
Verification through computer numerical control (CNC) milling and experimental measurement.

Main Results:

Achieved a peak gain of 32 dBi at 110 GHz.
Demonstrated equal-amplitude and alternative-phase excitation for the slot array.
Confirmed the effectiveness of the simple, two-layer integral structure.

Conclusions:

The proposed waveguide-slot antenna offers a promising solution for high-gain requirements in upper millimeter-wave and sub-terahertz frequency bands.
The simple structure and low-loss feeding network contribute to its efficiency.
This design facilitates advancements in high-frequency communication systems.