Dual-Loop Antenna for Multi-Band Wireless Communication
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Solution Overview
Problem
The increasing number of communication protocols in portable electronic communication devices requires multiple antennas, leading to increased size and cost, necessitating a more efficient antenna arrangement.
Innovation Solution
A dual-loop antenna configuration with conductive antenna tracks forming closed loops to resonate in multiple operational frequency bands, allowing for a Multiple Input Multiple Output (MIMO) or diversity antenna arrangement, while minimizing physical size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate antennas are used to support multiple communication protocols, then communication protocol compatibility is improved, but device size and cost increase
Solution Approach 1:
The patent combines multiple antenna functions into a single integrated antenna structure that operates across multiple frequency bands. The antenna comprises a conductive element with specific geometric configurations (including rectangular and circular sections) that enable resonance at multiple frequencies, eliminating the need for separate antennas for different communication protocols.
Solution Approach 2:
The antenna is designed as a universal structure capable of supporting multiple communication protocols simultaneously. By incorporating feed points at strategically located positions along the conductive element and using a multi-section geometry, the antenna can operate in various frequency bands (including 2.4 GHz, 5 GHz, and other WLAN bands) with a single device.
2Adaptability or versatility
If multiple separate antennas are used to support multiple frequency bands, then frequency band coverage is improved, but device size increases
Solution Approach 1:
The patent transitions from a conventional linear antenna design to a two-dimensional planar structure with both rectangular and circular sections. This dimensional change allows the antenna to achieve multiple resonant frequencies within a compact footprint by utilizing the geometric properties of different shapes and their relationship to wavelength at various frequencies.
Solution Approach 2:
The antenna achieves multi-band operation by changing geometric parameters of the conductive element, including the dimensions of rectangular sections, the radius of circular sections, and the positions of feed points. These parameter variations create multiple resonant frequencies from a single continuous structure, enabling broad frequency band coverage without increasing device volume.
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
Enables efficient wireless communication across multiple frequency bands with reduced device size and cost by utilizing a single antenna structure that resonates in multiple operational bands, enhancing performance and reducing complexity.
Implementation Method 1
a second conductive antenna track coupled to the first conductive antenna track at a first location in proximity to the first feed point, and at a second location between the first end and the second end of the first conductive antenna track, to form a first closed loop configured to resonate in a first operational frequency band
Data Source
AI summary
An apparatus comprising: a first conductive antenna track, extending between a first end and a second end and defining a loop shape, the first conductive antenna track comprising a first feed point adjacent to the first end and configured to couple to radio frequency circuitry; and a second conductive antenna track coupled to the first conductive antenna track at a first location in proximity to the first feed point, and at a second location between the first end and the second end of the first conductive antenna track, to form a first closed loop configured to resonate in a first operational frequency band.