Dipole Antenna With Blocking Patterns For mmWave Signal Isolation
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Solution Overview
Problem
High-frequency band RF signals used in mmWave communications are prone to absorption and loss during transmission, degrading communication quality, necessitating a specialized antenna design that includes separate power amplifiers and effective isotropic radiated power (EIRP) to achieve antenna gain and integration with RFIC.
Innovation Solution
The antenna apparatus incorporates dipole antenna patterns, feed lines, ground planes, blocking patterns, and shielding vias, with insulating layers and director patterns to enhance signal transmission and reception, improving gain and bandwidth by electromagnetically isolating and coupling the dipole antenna patterns, and overlapping ground planes to optimize resonance frequency and reduce size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-frequency band RF signals are used for mmWave communications, then data transmission capability is improved, but signal absorption and loss increase
Solution Approach 1:
The patent implements a nested structure where multiple ground planes are stacked vertically with dipole antenna patterns positioned between them. The first ground plane is disposed on one side of the dipole antenna patterns and spaced apart, while the second ground plane is disposed on the other side. This nested arrangement creates multiple reflective surfaces that confine and redirect RF signals, reducing energy loss through constructive interference and multiple reflection paths.
Solution Approach 2:
The patent transitions from a two-dimensional antenna design to a three-dimensional structure by stacking ground planes vertically and positioning dipole antenna patterns in the space between them. This vertical stacking creates additional spatial dimensions for signal propagation and reflection, allowing the antenna to achieve higher gain and reduced signal loss by utilizing the third dimension (height) for electromagnetic field confinement and manipulation.
2Reliability
If antenna gain and EIRP are increased to compensate for signal loss, then communication quality is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple functional elements into a single integrated antenna structure. The dipole antenna patterns are directly positioned between the ground planes, eliminating the need for separate reflectors or additional antenna components. The feed lines are integrated with the dipole patterns, and the entire structure is formed as one unified assembly, reducing device complexity while achieving the required antenna gain and EIRP through the clever arrangement of these combined elements.
Solution Approach 2:
The ground planes serve multiple functions simultaneously: they provide electrical reference planes for the dipole antennas, act as reflectors to enhance signal gain, create resonant cavities for frequency selectivity, and provide mechanical support structures. This multi-functionality allows the antenna to achieve high communication quality without requiring additional separate components, thereby avoiding increased device complexity.
3Object-generated harmful factors
If blocking patterns and shielding vias are added to improve electromagnetic isolation, then signal interference is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent divides the grounding structure into multiple segmented ground planes rather than using a single continuous ground. The first and second ground planes are separated by the dipole antenna patterns, creating distinct electrical zones. Blocking patterns are selectively placed between adjacent antenna elements, and shielding vias are positioned at specific locations, allowing electromagnetic isolation where needed while maintaining manufacturing simplicity through modular segmentation.
4Reliability
If the antenna structure is optimized for high-frequency performance, then communication reliability is improved, but antenna size increases
Solution Approach 1:
The patent optimizes the spacing parameters between ground planes and dipole antenna patterns to achieve resonant conditions at mmWave frequencies. By carefully controlling the distance between the first ground plane and dipole patterns, and between the dipole patterns and second ground plane, the antenna achieves high communication reliability through resonant enhancement without requiring large physical dimensions. The feed line lengths and dipole pattern dimensions are also precisely tuned to maintain proper impedance matching at high frequencies while minimizing overall antenna size.
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 enhances the antenna's gain, directivity, and bandwidth, effectively addressing signal loss and absorption issues in high-frequency communications, while minimizing the antenna's size and improving electromagnetic isolation.
Implementation Method 1
a first blocking pattern, connected to and extending from the first ground plane, is disposed between adjacent ones of the first dipole antenna patterns
Implementation Method 2
overlapping ground planes to optimize resonance frequency
Implementation Method 3
shielding vias disposed along a perimeter of the first ground plane and connected to the second ground plane
Data Source
AI summary
An antenna apparatus includes first dipole antenna patterns, feed lines, a first ground plane, and a first blocking pattern. The feed lines are connected to corresponding ones of the first dipole antenna patterns. The first ground plane is disposed on a side of the first dipole antenna patterns and spaced apart from each of the first dipole antenna patterns. The first blocking pattern, connected to and extending from the first ground plane, is disposed between adjacent ones of the first dipole antenna patterns.