Folded PIFA Antenna Layout for Wide LTE Bandwidth
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Solution Overview
Problem
Current antenna systems are limited in their ability to resonate across the full LTE frequency spectrum, leading to communication bottlenecks as more devices compete for frequency channels, and existing solutions either require large antenna arrays or single antennas with limited usable bandwidth.
Innovation Solution
A compact antenna system featuring three bent arm members paired with a tuning element, allowing for a frequency range of 600 MHz to 6.0 GHz, which is achieved through a modified printed inverted-F antenna configuration with a dual band monopole design and a separate tuning element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an antenna array of various antenna configurations is used to capture a greater portion of the LTE spectrum, then the frequency bandwidth is improved, but the space occupied increases making it impractical for small devices
Solution Approach 1:
The patent combines multiple antenna configurations into a single integrated antenna structure. The antenna includes a vertical radiating element with multiple horizontal elements extending at different angles and lengths, allowing it to resonate across multiple frequency bands (700 MHz to 2.7 GHz) that would traditionally require separate antennas or an antenna array.
Solution Approach 2:
The patent transitions from a two-dimensional planar antenna layout to a three-dimensional structure with elements extending in multiple spatial dimensions. The horizontal elements extend at different angles from the vertical element, creating a volumetric configuration that enables multiple resonance frequencies within a compact footprint, effectively using spatial dimensionality to increase frequency bandwidth without increasing planar area.
2Area of stationary object
If a single antenna is used to reduce space occupation, then the space occupied is improved, but the useable bandwidth is limited by its geometrical configuration
Solution Approach 1:
The patent applies local quality by making different portions of the single antenna structure have different geometrical properties. The vertical element has a specific length for lower frequency resonance, while the horizontal elements have varying lengths and angles optimized for different frequency bands. This local variation in geometrical characteristics allows the single antenna to resonate across multiple frequency ranges from 700 MHz to 2.7 GHz.
Solution Approach 2:
The patent utilizes parameter changes by varying the physical dimensions and orientations of different elements within the single antenna structure. The vertical element length, horizontal element lengths, and angles of extension are specifically designed to create multiple resonance frequencies. By changing these geometric parameters across different parts of the antenna, the structure achieves wide bandwidth coverage while maintaining a compact single-antenna form factor.
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 solution provides a wider frequency range than existing systems, making it suitable for compact LTE transmitters while maintaining a compact form factor, thus overcoming the limitations of traditional antenna systems.
Implementation Method 1
antennae that are configured to electromagnetically resonate at frequencies within the dedicated bandwidth
Data Source
AI summary
Embodiments of the present invention provides an antenna and an antenna system. The antenna includes a body member, a head member integrally connected to a first edge of the body member, wherein the head member forms a fold having a first angle towards the front face of the body member, and a first arm member and a second arm member, wherein the first arm member and the second arm member are integrally connected to the body member corresponding to the second edge and the third edge of the body member, and wherein the set of arm members each form a fold having a second angle towards the front face of the body member.