Antenna Reflector Coupling Capacitor for Gap Leakage Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Antenna devices with separate antennas suffer from signal leakage through the spacing between them, leading to a degraded front-to-back ratio and compromised radiation performance.
Innovation Solution
Incorporating a coupling capacitor with polar plates positioned near the spacing between the antennas, which suppresses signal leakage by forming a capacitive coupling that enhances the reflection of signals, maintaining a high front-to-back ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are separately provided to improve performance and flexibility, then antenna device performance and configurability are improved, but signal leakage occurs through the spacing between antennas, degrading the front-to-back ratio
Solution Approach 1:
A coupling capacitor is introduced as an intermediary component between the reflecting members of adjacent antennas. This capacitor fills the spacing gap and provides capacitive coupling that suppresses signal leakage while maintaining the separate antenna structure for flexibility and performance benefits.
Solution Approach 2:
The electrical parameters of the spacing between antennas are modified by introducing a coupling capacitor. This changes the electromagnetic characteristics of the gap, transforming it from a signal leakage path into a controlled capacitive coupling region that maintains impedance continuity and suppresses leakage.
2Ease of operation
If spacing is provided between reflecting members, then antenna separation and flexibility are achieved, but radiation performance degrades due to signal leakage
Solution Approach 1:
The coupling capacitor serves as a mediator that enables physical separation of antennas for ease of assembly while maintaining electromagnetic performance. It bridges the gap between reflecting members, allowing mechanical flexibility without sacrificing radiation reliability.
3Reliability
If coupling capacitor is added to suppress signal leakage, then front-to-back ratio is improved, but device complexity increases
Solution Approach 1:
Rather than adding complex structural elements, the solution modifies the electrical parameters of the existing spacing by introducing a simple coupling capacitor. This achieves improved front-to-back ratio through electrical parameter optimization rather than structural complexity.
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 capacitive coupling effectively reduces signal leakage, maintaining high radiation performance by minimizing the impact of the spacing between the antennas, similar to a continuous reflecting surface.
Implementation Method 1
a coupling capacitor comprising a first polar plate and a second polar plate, wherein the first polar plate is disposed on a side, close to the spacing, of a first reflecting surface of the first reflecting member, and the second polar plate is disposed on a side, close to the spacing, of a second reflecting surface of the second reflecting member
Data Source
AI summary
The present disclosure relates to an antenna device comprising: a first antenna comprising a first reflecting member configured to reflect at least a portion of a signal radiated by the antenna device; a second antenna comprising a second reflecting member configured to reflect at least a portion of the signal radiated by the antenna device, there is a spacing between the first reflecting member and the second reflecting member; and a coupling capacitor comprising a first polar plate and a second polar plate, the first polar plate is disposed on a side, close to the spacing, of a first reflecting surface of the first reflecting member, and the second polar plate is disposed on a side, close to the spacing, of a second reflecting surface of the second reflecting member.