Slotted Waveguide Antenna Array for Millimeter-Wave Gain
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Solution Overview
Problem
Millimeter-wave networks face limitations in communication gain and effective range due to high free space loss, requiring improvements in antenna systems to enhance communication quality and range.
Innovation Solution
The development of a slotted waveguide antenna system with accurately cut slots on an electrically-conductive lamina and a metal cover to form an enclosed waveguide cavity, which radiates millimeter-waves and increases communication gain, combined with a Radio Frequency Integrated Circuit (RFIC) for efficient signal transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If millimeter-wave networks use conventional antenna systems, then the system structure is simple, but the communication gain is insufficient and effective range is limited
Solution Approach 1:
The antenna system is segmented into multiple identical slotted waveguide antenna elements arranged in an array. Each element consists of a waveguide with slots cut in the broad wall, and multiple elements are combined to achieve higher communication gain through constructive interference of radiated waves, resolving the contradiction between simple structure and sufficient gain.
Solution Approach 2:
Multiple slotted waveguide antenna elements are merged into a single antenna array system. The individual radiating elements are combined with proper spacing and phasing to produce a unified radiation pattern with enhanced gain, allowing the system to achieve high communication gain while maintaining modular simplicity.
2Length of stationary object
If millimeter-wave networks increase transmission power to overcome free space loss, then communication range improves, but power consumption increases
Solution Approach 1:
The system uses high-data-rate transmission over short durations to skip through the high free space loss region. By utilizing the available spectrum bandwidth and efficient modulation schemes, the system achieves high data rates quickly, reducing the need for continuous high power transmission and thereby limiting effective range extension without excessive power consumption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution achieves increased communication gain and range in millimeter-wave networks, enabling data transfer rates of at least 200 Mbps over distances of more than 100 meters while maintaining low power consumption below 2.5 W, using directional antennas and 16QAM modulation.
Implementation Method 1
a slotted wave-guide configured to transport millimeter-waves, wherein the slotted wave-guide includes first, a printed-circuit-board comprising an electrically-conductive lamina mounted on a substrate lamina
Implementation Method 2
the slotted wave-guide is configured to guide millimeter-waves over said multiple separate slots, thereby radiating millimeter-waves via the multiple separate slots
Data Source
AI summary
Various embodiments of a millimeter-wave antenna system configured to enhance the gain in a communication network, in which one or more slotted wave-guides produce radiating slot structures that form accurate high-gain millimeter-wave radiation patterns. The system comprises one or more slotted wave-guides to transport millimeter-waves, a PCB including a substrate lamina and an electrically-conductive lamina with two or more highly accurate slots, and an electrically-conductive metal cover that intersects the electrically-conductive lamina to form an enclosed wave-guide cavity. Various embodiments of methods for producing the millimeter-wave antenna system, including different techniques for creating the accuracy of the slots in the slotted wave-guides.