Integrated Antenna Assembly Filtering for High Isolation Arrays
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Solution Overview
Problem
Current wireless communication systems face challenges in miniaturizing antenna arrays while maintaining high isolation and efficiency, as the increase in antenna channels leads to larger sizes and increased requirements for radio frequency front-end filters and duplexers.
Innovation Solution
The proposed antenna assembly incorporates a first antenna array element for receiving and a second antenna array element for transmitting, each equipped with filtering structures such as split-ring resonator and short-circuit cavity designs, to minimize crosstalk and reduce size by allowing closer spacing of antenna elements, thereby achieving high isolation and miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the quantity of antenna channels is increased, then the antenna performance is improved, but the overall size of the antenna is increased
Solution Approach 1:
The patent combines transmit and receive antenna elements into a unified antenna assembly structure, where filtering structures are integrated directly onto the antenna elements themselves. This merging allows multiple antenna channels to share common structural resources and spacing, reducing the overall area required compared to separate transmit and receive antenna systems.
Solution Approach 2:
The filtering structures are nested directly onto the antenna array elements, with the filtering structure physically integrated onto the antenna element surface. This nesting approach allows the filtering function to be embedded within the antenna structure itself, eliminating the need for separate external filter components and reducing overall system footprint.
2Adaptability or versatility
If the quantity of antenna channels is increased, then the antenna performance is improved, but the spacing between antenna elements must be increased to maintain isolation
Solution Approach 1:
Filtering structures are introduced as intermediary components between adjacent antenna elements to suppress crosstalk and electromagnetic interference. These filtering structures act as mediators that allow antenna elements to be placed closer together while maintaining the required isolation levels, effectively enabling denser antenna channel packing without compromising performance.
Solution Approach 2:
The filtering structures are designed to preemptively counteract crosstalk and interference between antenna elements before these harmful effects can propagate. By placing filtering structures directly on the antenna elements, the system proactively prevents interference rather than attempting to mitigate it after occurrence, allowing for reduced spacing between elements.
3Reliability
If filtering structures are added to reduce crosstalk, then the isolation performance is improved, but the device complexity is increased
Solution Approach 1:
The filtering function is merged with the antenna element structure itself, where the filtering structure is integrated onto the antenna element rather than being a separate component. This merging reduces the number of discrete parts and simplifies the overall system architecture while maintaining the isolation performance benefits of filtering.
Solution Approach 2:
The antenna elements are designed to serve multiple functions simultaneously: radiation and the filtering of unwanted frequencies. By making the antenna element itself capable of filtering, the system eliminates the need for separate filter components, thereby reducing device complexity while maintaining isolation performance.
4Reliability
If filtering structures are added to each antenna element, then the receive-transmit isolation is improved, but the manufacturing complexity is increased
Solution Approach 1:
The filtering structure and antenna element are merged into a single integrated component that can be manufactured as one unit. This integration allows for simplified manufacturing processes compared to assembling separate antenna and filter components, reducing manufacturing complexity while achieving improved receive-transmit isolation performance.
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 performance and reduces the space occupied by the antenna assembly, allowing for a more compact array antenna design with reduced dependence on high-performance filters and duplexers, leading to cost savings and improved communication device miniaturization.
Implementation Method 1
The first filtering structure may perform filtering in a non-operating frequency band of the first antenna array element, to avoid crosstalk to the second antenna array element caused by the non-operating frequency band of the first antenna array element
Data Source
AI summary
This application relates to the field of antenna technologies, and in particular, to an antenna assembly. The antenna assembly includes a first antenna array element, a second antenna array element, and a filtering structure. The first antenna array element supports receiving in a first frequency band, and the second antenna array element supports transmitting in a second frequency band. The filtering structure includes at least one of a first filtering structure and a second filtering structure. The first filtering structure is disposed on the first antenna array element, and the second filtering structure is disposed on the second antenna array element. Isolation of the antenna assembly is high.