Concentric Circular Loop Antenna Multiplexing
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Solution Overview
Problem
Existing wireless communication techniques require complex antenna configurations and signal processing to achieve high transmission rates per frequency, making them difficult to implement in a simple and cost-effective manner.
Innovation Solution
A wireless communication apparatus with a transmitting and receiving antenna system comprising concentric circular loop antenna groups with different perimeters and power supply units connected at specific angular positions, allowing for improved transmission rates without the need for complex phase shifters or signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MIMO technique with multiple antennas is used to improve transmission rate per frequency, then transmission rate per frequency is improved, but system configuration becomes complicated and complicated signal processing is required
Solution Approach 1:
The patent segments the antenna system into multiple independent circular loop antenna elements with different perimeters, where each element operates independently at the same frequency. This segmentation allows multiple antennas to work in parallel without requiring complex cooperative signal processing, thus improving transmission rate while maintaining simple system configuration.
Solution Approach 2:
Each circular loop antenna element is designed with a specific local quality - a unique perimeter that is an integral multiple of the wavelength. This local differentiation in perimeter length enables each antenna to radiate efficiently at the same frequency without requiring complex phase shifting or signal processing, resolving the contradiction between high transmission rate and simple system configuration.
2Productivity
If array type antenna elements are disposed on circumference with phase shifting to create OAM modes, then multiplexing between modes is enabled, but configuration of transmission circuit and reception circuit becomes complicated
Solution Approach 1:
The patent changes the physical parameter of antenna perimeter length to achieve mode differentiation. By setting perimeters as integral multiples of wavelength (1λ, 2λ, 3λ, etc.), each antenna element naturally produces different radiation patterns and modes without requiring complex phase shifters or circuit configurations, thus enabling multiplexing with simple circuits.
Solution Approach 2:
Instead of using phase shifting to create different modes (as in conventional OAM systems), the patent inverts the approach by using different perimeter lengths to directly generate different modes. This inversion eliminates the need for complex phase shifters and circuit configurations while achieving the same multiplexing capability.
3Productivity
If conventional techniques are used to achieve high transmission rates, then transmission performance is improved, but ease of manufacture deteriorates due to complex antenna configurations
Solution Approach 1:
The patent uses simple circular loop structures that can be easily copied and mass-produced. Each antenna element is a basic circular loop with a specific perimeter, which can be manufactured using standard PCB or wire wrapping techniques. This copying approach enables high transmission rates through multiple independent elements while maintaining ease of manufacture.
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 apparatus achieves enhanced transmission rates per frequency with a simple configuration, enabling efficient multiplexing using the same frequency band and reducing the complexity of circuit configurations, thus improving communication performance and mass productivity.
Implementation Method 1
N circular loop antenna elements having different perimeters of m1, m2, . . . , and mN times that are approximately integral multiples of a wavelength determined from a wireless communication frequency
Data Source
AI summary
Circular loop antenna elements of each of a transmitting antenna 100 and a receiving antenna 200 have different perimeters of approximately integral multiples of a wavelength determined from a wireless communication frequency. The transmitting antenna 100 and the receiving antenna 200 include first circular loop antenna groups 100A and 200A concentrically disposed on the same plane and second circular loop antenna groups 100B and 200B including circular loop antenna elements of the same perimeter as that of a plurality of circular loop antenna elements of the first circular loop antenna group. An angular position of a terminal for connecting power supply units to circular loop antenna elements having the same perimeter is set to an angular position rotated by (2l+1)π/2mi (where l is any integer, and mi is a value of m1 to mN that are approximately integral multiples of a wavelength) in the first and second circular loop antenna groups.