Brake Lever Antenna Layout for Reflected Wave Interference
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Solution Overview
Problem
Existing techniques for reducing the effect of reflected electromagnetic waves in antenna systems require a large number of resonator structures to be aligned, which is inefficient.
Innovation Solution
A brake lever and transmission system with an antenna configuration that includes a first conductor, a second conductor, a third conductor, and a fourth conductor, where the third conductor capacitively connects the first and second conductors, and the fourth conductor is connected to both, maintaining emission efficiency even when a metal component is present, by aligning the antenna's structure to minimize wave interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large number of resonator structures are aligned to reduce reflected wave effects, then the antenna emission efficiency is improved, but the device complexity and manufacturing difficulty increase significantly
Solution Approach 1:
The patent combines multiple resonator structures into a single integrated resonator that achieves the same reflected wave reduction effect. The resonator includes a ground electrode, dielectric layer, and upper electrode configured to reduce reflected waves from metal conductors, eliminating the need to align multiple separate resonators while maintaining emission efficiency.
Solution Approach 2:
The resonator structure serves multiple functions simultaneously: it reduces reflected wave effects, maintains antenna emission efficiency, and can be integrated with the brake lever housing or handlebar components. The single resonator structure performs what previously required multiple aligned resonators, simplifying the overall system design.
2Reliability
If multiple resonator structures are aligned to reduce reflected wave interference, then the electromagnetic wave emission is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The patent integrates the resonator functionality into a single manufacturable unit that can be attached to or integrated with the brake lever housing. This eliminates the complex alignment process required for multiple resonators, making the manufacturing process simpler and more reliable.
Solution Approach 2:
The resonator acts as an intermediary structure between the antenna and the metal conductor (brake lever housing), reducing reflected wave interference without requiring complex alignment. The resonator can be positioned at a specific distance from the metal surface, providing a simple mounting solution that improves emission efficiency without manufacturing complexity.
3Reliability
If the distance between antenna and metal conductor is set to 1/4 wavelength to reduce reflected waves, then the emission efficiency is improved, but the adaptability to different mounting positions deteriorates
Solution Approach 1:
The resonator structure provides a dynamic solution by maintaining the optimal 1/4 wavelength distance through its physical configuration rather than requiring precise antenna positioning. The resonator can be designed with specific dimensions that correspond to the required electrical distance, allowing flexibility in mounting positions while maintaining emission efficiency.
Solution Approach 2:
The resonator serves as a mediator that decouples the antenna from the metal conductor, allowing the antenna to be positioned at various locations while the resonator maintains the optimal electrical distance. This intermediary structure provides mounting flexibility without sacrificing emission efficiency, as the resonator absorbs the distance variation.
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 configuration allows for efficient electromagnetic wave emission and communication between components, reducing interference from reflected waves and the need for multiple resonators, thus enhancing the overall performance of the antenna system.
Implementation Method 1
The third conductor is located between the first conductor and the second conductor, is configured to capacitively connect the first conductor and the second conductor
Implementation Method 2
Electromagnetic waves emitted from an antenna are reflected by a metal conductor. A 180° phase shift occurs in the electromagnetic waves reflected by the metal conductor.
Implementation Method 3
The reflected electromagnetic waves combine with the electromagnetic waves emitted from the antenna. The amplitude may decrease as a result of the electromagnetic waves emitted from the antenna combining with the phase-shifted electromagnetic waves.
Data Source
AI summary
A brake lever and a transmission with a novel antenna are provided. The brake lever is attachable to the handlebar. The brake lever includes a long portion configured as including an electrically conductive material and an antenna located on the long portion. The antenna includes a first conductor, a second conductor facing the first conductor in a first direction, a third conductor, a fourth conductor, and a power supply line configured to be electromagnetically connected to the third conductor. The third conductor is located between the first conductor and the second conductor, is configured to capacitively connect the first conductor and the second conductor, and extends in the first direction. The fourth conductor is connected to the first conductor and the second conductor and extends in the first direction. The fourth conductor faces the long portion.