Antenna Assembly Integrated Choke Structure
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Solution Overview
Problem
Current multiband antennas experience perturbations due to the close proximity of high-band and low-band radiating elements, leading to undesirable interactions and manufacturing challenges in incorporating chokes to reduce these effects.
Innovation Solution
A printed circuit board assembly with a radiating element layer and a choke structure, where the central conductor comprises a portion of the radiating element layer, surrounded by a shielding structure, simplifies manufacturing and reduces perturbations by using integrated chokes that are easy to assemble and provide effective electrical lengths for attenuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If high-band and low-band radiating elements are closely interleaved in multiband antennas, then multiband communication capability is achieved, but non-desired interactions and perturbations between radiating elements occur
Solution Approach 1:
The patent divides the radiating element into multiple segments by introducing choke structures that electrically isolate different portions of the element. This segmentation allows high-band and low-band radiating elements to be closely positioned while preventing harmful electromagnetic interactions between them, thus resolving the contradiction between achieving multiband capability and avoiding perturbations.
Solution Approach 2:
The choke structure acts as an intermediary element between different radiating elements. It provides electromagnetic isolation by blocking unwanted currents while allowing the desired radiation patterns to form, enabling close interleaving of high-band and low-band elements without harmful interactions.
2Object-affected harmful factors
If traditional choke structures are incorporated into radiating elements to reduce perturbations, then high-band perturbation is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent merges the choke structure with the radiating element into a single integrated component. The choke is formed as an integral part of the radiating element structure, eliminating the need for separate assembly steps and reducing manufacturing complexity while still providing the necessary electromagnetic isolation to reduce high-band perturbation.
Solution Approach 2:
The radiating element is designed to serve multiple functions simultaneously: it acts as both the radiating structure for electromagnetic wave generation and the choke structure for current blocking. This multi-functionality reduces the number of separate components needed and simplifies the manufacturing process while maintaining the ability to reduce perturbations.
3Object-affected harmful factors
If shielding structures are added around radiating elements to reduce interactions, then perturbation is reduced, but device complexity and assembly difficulty increase
Solution Approach 1:
The patent combines the shielding function with the radiating element structure itself. The choke structure is integrated directly into the radiating element, eliminating the need for separate shielding components. This merging reduces device complexity and makes assembly easier while still providing effective isolation between high-band and low-band elements.
4Object-affected harmful factors
If multiple choke structures are placed along radiating elements to block non-desired currents, then perturbation reduction is improved, but manufacturing difficulty increases
Solution Approach 1:
The patent integrates multiple choke structures directly into the radiating element as a single manufactured component. The chokes are formed as integral parts of the radiating element structure, allowing multiple current-blocking locations to be achieved without requiring separate assembly operations, thus reducing manufacturing difficulty while effectively blocking non-desired currents.
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 effectively reduces perturbations across various frequencies by using integrated chokes on the radiating element layer, enhancing the antenna's performance and simplifying the manufacturing process, while maintaining a compact and easy-to-assemble design.
Implementation Method 1
a choke structure having a central conductor and a shielding structure, wherein the central conductor comprises at least a portion of the radiating element layer
Implementation Method 2
to block the non-desired currents one or more chokes can be placed along the conductor of the radiating element
Implementation Method 3
the shielding structure comprises at least one conductive layer separated from the portion of the radiating element layer by a dielectric layer of the printed circuit board assembly
Data Source
AI summary
An antenna assembly and method are disclosed. The antenna assembly comprises: a printed circuit board assembly having a radiating element layer and a choke structure, the choke structure having a central conductor and a shielding structure, wherein the central conductor comprises at least a portion of the radiating element layer. By providing a printed circuit board assembly having a radiating element layer and a choke structure which utilises a portion of the radiating element layer, the manufacture of the radiating elements is simplified.