Flexible Polymer Antenna With Ground Resonators for Wideband Curved Mounting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for an antenna capable of multiple resonance frequencies over a wide band, specifically between 700 MHz and 2700 MHz, that can be integrated into curved surfaces of devices while maintaining high performance.
Innovation Solution
The antenna architecture features a radiating element on a flexible polymer substrate with a novel multi-section wrapping ground conductor, where the cable shield acts as an extension to the ground plane, allowing efficient signaling across the desired frequency range and enabling the antenna to conform to curved surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional antenna designs are used, then the antenna structure is simple, but the antenna cannot achieve multiple resonance frequencies over a wide band (700-2700 MHz)
Solution Approach 1:
The ground conductor is divided into multiple segmented ground resonators of different sizes (first, second, and third ground resonators). Each resonator is designed to resonate at different frequency ranges, enabling the antenna to achieve multiple resonance frequencies across the wide band from 700 MHz to 2700 MHz while maintaining a manageable structural complexity through modular segmentation.
2Adaptability or versatility
If the antenna is made rigid for stable performance, then the performance is stable, but the antenna cannot conform to curved surfaces of devices
Solution Approach 1:
The antenna is constructed using a flexible polymer substrate instead of a rigid substrate. This flexible substrate allows the antenna to conform to curved surfaces of various devices while maintaining electrical connectivity and performance stability. The flexible nature enables the antenna to be integrated into wearable devices and other applications requiring curved surface mounting without compromising performance reliability.
3Volume of moving object
If the antenna size is reduced for compact devices, then the device integration is improved, but the antenna cannot maintain high efficiency across the wide frequency range
Solution Approach 1:
Multiple ground resonators of different sizes are nested within a compact antenna structure. The first, second, and third ground resonators are arranged in a nested configuration where smaller resonators are positioned within the footprint of larger ones. This nesting approach enables the antenna to maintain high signal efficiency across the wide frequency range from 700 MHz to 2700 MHz while occupying a minimal volume suitable for compact device integration.
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 design achieves high efficiency and compact size, maintaining performance across the 700-2700 MHz range, even when curved, by using multiple progressively larger ground resonators and routing the cable as an additional resonator, thus overcoming the challenges of integrating antennas into compact devices.
Implementation Method 1
the ground conductor includes multiple resonating portions including a first ground resonator, a second ground resonator, and a third ground resonator
Data Source
AI summary
The disclosure concerns an antenna assembly having a substrate with an antenna radiating element and a ground conductor disposed on the substrate, the ground conductor further characterized by a plurality of ground resonators, wherein a length associated with each of the ground resonators increases as the ground resonators are distanced from the antenna radiating element. Additionally, a coaxial cable is routed around the antenna assembly for configuring the coaxial cable as an additional ground resonator associated with the antenna assembly. The resulting antenna provides wide band performance between 700 MHz and 2700 MHz with improved efficiency compared with conventional antennas.