Multi-band Planar Loop Antenna for Global Cellular Compatibility
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Solution Overview
Problem
Existing wireless devices require different antenna configurations for various geographic regions to accommodate non-uniform cellular or mobile communication standards, leading to increased inventory and manufacturing costs.
Innovation Solution
A multi-band planar loop antenna configured to operate across a wide range of frequencies (less than 806 MHz to over 2.17 GHz) is developed, using a conductive loop with conic sections and a dielectric material, which can be integrated into a printed circuit board assembly, allowing for worldwide compatibility and reduced manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different antenna configurations are used for each geography to accommodate non-uniform cellular standards, then communication compatibility is improved, but inventory carrying and manufacturing costs increase
Solution Approach 1:
The patent implements a single antenna configuration that can operate across multiple frequency bands (e.g., 800 MHz, 1.9 GHz, 2.1 GHz) used by different cellular standards (GSM, CDMA, LTE) in various geographic regions. This multi-band capability allows one antenna design to replace multiple geography-specific antenna configurations, achieving universal compatibility while reducing inventory complexity and manufacturing costs
2Adaptability or versatility
If different antenna configurations are used for each geography, then communication compatibility is improved, but manufacturing costs increase
Solution Approach 1:
The antenna design supports multiple frequency bands and cellular standards within a single configuration, eliminating the need to manufacture and stock multiple geography-specific antenna variants. This reduces manufacturing complexity, inventory carrying costs, and logistics while maintaining compatibility with various cellular standards across different regions
3Adaptability or versatility
If a multi-band antenna is designed to operate across a wide frequency range, then worldwide compatibility is improved, but antenna design complexity increases
Solution Approach 1:
The antenna employs multiple discrete conic sections (ellipses, circles, or parabolas) with different dimensions and orientations arranged in a planar configuration. Each conic section is optimized for specific frequency bands, and their combined radiation patterns achieve wideband coverage. This segmentation approach allows independent optimization of each section while maintaining overall design simplicity through planar integration
Solution Approach 2:
The antenna uses conic sections with varying dimensions, orientations, and shapes (elliptical, circular, or parabolic) rather than uniform geometric forms. This asymmetric design enables each conic section to resonate at different frequencies, achieving multi-band operation. The asymmetric configuration optimizes radiation efficiency across different frequency ranges while maintaining a compact planar structure
Data Source
AI summary
An approximately planar antenna assembly can be formed or used, such as comprising a printed circuit board assembly. In an example, the approximately planar antenna assembly can include a dielectric material and a conductive loop comprising an outer loop portion having a first conic section an inner loop portion having a second conic section located within a footprint of the first conic section. The planar antenna assembly can be configured to support wireless transfer of information in at least two ranges of operating frequencies, such as two or more respective ranges used for cellular communications.