Converter Antenna Waveguide Coupling for Low-Leakage Mode Transfer
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Solution Overview
Problem
Existing communication systems face challenges in efficiently and stably transferring microwave signals between different types of transmission lines due to signal leakage and mode mismatch, leading to inefficiencies and instability in electrical signal transmission.
Innovation Solution
A transformative apparatus comprising a substrate, a transmission member, a converter antenna, and a waveguide, where the converter antenna changes the signal mode to reduce leakage and improve efficiency by guiding the signal into the waveguide, which includes a hollow metal structure and a guiding member to enhance coupling and reduce losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If direct connection between different types of transmission lines is used, then structural simplicity is maintained, but signal leakage increases and transmission efficiency deteriorates
Solution Approach 1:
The patent introduces a converter antenna as an intermediary component between the planar transmission line and the waveguide. The converter antenna receives signals from the planar transmission line, performs mode conversion through its specific geometric structure, and couples the converted signals into the waveguide, thereby reducing signal leakage while maintaining reasonable structural complexity
Solution Approach 2:
The transformation apparatus is segmented into distinct functional components: the planar transmission line segment, the converter antenna segment, and the waveguide segment. Each segment is optimized for its specific function, with the converter antenna serving as a dedicated mode conversion element that bridges the two different transmission line types
2Productivity
If mode conversion is performed using converter antenna, then transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The converter antenna achieves mode conversion by changing geometric parameters such as its length, width, and orientation angle. By adjusting these physical parameters, the antenna transforms the signal mode from the planar transmission line to match the waveguide requirements, improving transmission efficiency while keeping the structure relatively simple
Solution Approach 2:
The converter antenna employs asymmetric geometric configuration to achieve effective mode conversion. The asymmetric structure creates different coupling conditions for different signal modes, enabling efficient transformation from the symmetric planar transmission line mode to the asymmetric waveguide mode
3Reliability
If guiding member is added to enhance coupling, then signal stability is improved, but manufacturing complexity increases
Solution Approach 1:
The guiding member is pre-positioned and integrated into the transformation apparatus during the design phase, establishing optimal coupling paths before actual signal transmission. This preliminary configuration ensures signal stability without requiring complex post-assembly adjustments
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 effectively reduces signal leakage and improves transmission efficiency between different types of transmission lines, ensuring stable and efficient microwave signal transfer by converting signal modes and utilizing a guiding member for enhanced coupling within the waveguide.
Implementation Method 1
the converter antenna is connected to the transmission member, and is configured to: receive the electrical signal from the transmission member, form local radiation, and excite an electrical signal having a second mode in the first waveguide
Implementation Method 2
the first guiding member is connected to the hollow metal structure of the first waveguide, so that an induced current on the first guiding member can be directly transmitted to the first waveguide
Data Source
AI summary
A transformative apparatus includes a transmission member, a converter antenna, a first waveguide, and a first guiding member. The transmission member is configured to receive and transmit an electrical signal having a first mode. The converter antenna is configured to receive the electrical signal from the transmission member, form local radiation, and excite an electrical signal having a second mode in the first waveguide. The first waveguide is configured to receive and transmit the electrical signal having the second mode. The first guiding member is configured to guide an electrical signal output from the converter antenna into the first waveguide. The transformative apparatus changes a mode of an electrical signal on the transmission member by using the converter antenna, and guides the electrical signal to the first waveguide by using the first guiding member.