Adjustable Phase Transmission Line Using Metal Delay Elements
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Solution Overview
Problem
Antennas with fixed phases negatively affect communication quality in wireless devices, posing a challenge for designers.
Innovation Solution
A transmission device incorporating a first dielectric layer, signal line, ground plane, and metal elements configured to provide adjustable delay phases, allowing for phase adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed phase antenna is used, then the device structure is simple, but the communication quality deteriorates
Solution Approach 1:
The patent applies the dynamics principle by making the antenna phase adjustable rather than fixed. The metal element can be positioned at different locations along the signal line, enabling the phase to be dynamically changed according to communication requirements. This resolves the contradiction by allowing the antenna to adapt its phase configuration, thereby improving communication quality while maintaining a relatively simple overall device structure.
Solution Approach 2:
The patent employs parameter changes by modifying the electrical length of the signal line through repositioning the metal element. By changing the position parameter of the metal element along the signal line, the phase parameter of the antenna is adjusted. This enables flexible phase control to improve communication quality without significantly complicating the device structure.
2Reliability
If a phase-adjustment function is added to the antenna, then communication quality is improved, but device complexity increases
Solution Approach 1:
The patent applies the merging principle by integrating the phase adjustment function directly into the antenna structure itself. The metal element serves dual purposes: it is both part of the radiating antenna structure and the phase adjustment mechanism. This eliminates the need for separate phase control circuits or additional components, thereby improving communication quality through phase adjustment while avoiding significant increases in device complexity.
Solution Approach 2:
The antenna structure serves itself by using the same metal element for both radiation and phase control functions. The metal element's position along the signal line simultaneously determines the antenna's radiating characteristics and its phase delay, eliminating the need for external phase control mechanisms and keeping the circuitry simple.
3Manufacturing precision
If complex phase adjustment mechanisms are used, then phase control precision is improved, but manufacturing cost increases
Solution Approach 1:
The patent employs a simple metal element that can be easily manufactured and positioned at different locations along the signal line. This straightforward implementation achieves phase control precision through geometric positioning rather than complex mechanisms, thereby maintaining low manufacturing costs while providing adequate phase control accuracy for practical applications.
Data Source
AI summary
A transmission device with a phase-adjustment function includes a first dielectric layer, a signal line, a ground plane, and a first metal element. The first dielectric layer has a first surface and a second surface which are opposite to each other. The signal line is disposed on the first surface of the first dielectric layer. The ground plane is disposed on the second surface of the first dielectric layer. The first metal element is coupled to a first connection point on the signal line. The first metal element is configured to provide a first delay phase.