Multi-Level Patch Antenna Feeding for mmWave Signal Loss
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Solution Overview
Problem
High-frequency RF signals used in mmWave communications are prone to absorption and loss during transmission, degrading communication quality, and existing antenna technologies require specialized approaches to maintain gain and efficiency.
Innovation Solution
The antenna apparatus employs a patch antenna pattern with non-contact power feeding via and multiple feed patterns on different levels, overlapping and electrically connected, along with coupling patterns to enhance resonance frequencies and reduce size, allowing for efficient transmission and reception across various frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high frequency band RF signals are used for mmWave communications, then data transmission capacity increases, but signal absorption and loss increase
Solution Approach 1:
The patent implements nested feeding structures where multiple feed patterns are disposed at different levels within the antenna apparatus. The first feed pattern is disposed at a first level, the second feed pattern at a second level, and the third feed pattern at a third level, creating a nested configuration that enables multi-frequency operation while maintaining compact size and reducing signal loss through distributed feeding points
Solution Approach 2:
The patent transitions from planar to three-dimensional feeding structure by disposing feed patterns at different vertical levels. The feed patterns are arranged in multiple layers with different heights, utilizing the vertical dimension to achieve frequency selectivity and reduce mutual interference while maintaining high data transmission capacity
2Reliability
If separate power amplifiers and special techniques are used to secure antenna gain, then communication quality improves, but device complexity increases
Solution Approach 1:
The patch antenna structure serves multiple functions simultaneously: it acts as the radiating element, the feeding structure, and the frequency-selective component. The nested feed patterns at different levels provide both impedance matching and frequency selection without requiring separate power amplifiers or additional matching circuits, thereby maintaining communication quality while reducing device complexity
Solution Approach 2:
The patent combines the feeding network and frequency-selective elements into a single integrated patch antenna structure. The multiple feed patterns are directly formed on the patch antenna substrate, merging what would traditionally be separate components (feed network, matching elements, and radiating patch) into one unified structure
3Volume of moving object
If antenna size is reduced for integration, then miniaturization is achieved, but antenna performance may degrade
Solution Approach 1:
The nested feed patterns at different vertical levels enable the antenna to maintain full performance functionality within a compact volume. By stacking feed patterns vertically rather than spreading them horizontally, the design achieves miniaturization while preserving the electromagnetic coupling and resonance characteristics necessary for high-frequency operation
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
This configuration improves antenna performance by enabling efficient transmission and reception across multiple frequency bands, reducing size, and minimizing electromagnetic interference, thus addressing the challenges of high-frequency signal absorption and loss.
Implementation Method 1
a first feed via to feed power to the patch antenna pattern in a non-contact manner on a first side of the patch antenna pattern
Data Source
AI summary
An antenna apparatus includes a patch antenna pattern; a first feed via to feed power to the patch antenna pattern in a non-contact manner on a first side of the patch antenna pattern; and a plurality of feed patterns disposed on the first side of the patch antenna pattern on different levels and overlapping each other, and including at least one feed pattern that is electrically connected to the first feed via, and each having a width greater than a width of the first feed via and a cross-sectional area smaller than a cross-sectional area of the patch antenna pattern.