Phase Shifter Electrode Layout for Stable Antenna Modulation
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Solution Overview
Problem
Current antenna devices with passive driving elements face issues of circuit coupling and short circuits due to insufficient wiring space, leading to instability and reliability problems in modulating electromagnetic waves.
Innovation Solution
An electronic device with a phase shifter electrode connected to an active driving element, such as a thin film transistor, which improves signal consistency and reduces power consumption by maintaining uniform feeding voltages across phase shifter electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If phase shifter electrodes are controlled by passive driving elements, then device complexity is reduced, but circuit coupling and short circuits occur leading to poor reliability
Solution Approach 1:
An insulating layer is introduced as an intermediary between the feeding line and phase shifter electrodes, preventing direct electrical contact that causes coupling and short circuits. This mediator maintains signal integrity while allowing controlled interaction through the insulating barrier.
Solution Approach 2:
The feeding line and phase shifter electrodes are positioned at different vertical levels separated by an insulating layer, utilizing the third dimension (height) to resolve the coupling problem. This spatial separation in the vertical dimension prevents planar interference while maintaining functional connectivity.
2Productivity
If wiring space is reduced to increase antenna density, then productivity is improved, but circuit coupling and short circuits increase leading to poor reliability
Solution Approach 1:
By utilizing vertical stacking with insulating layers between feeding lines and phase shifter electrodes, the design achieves high antenna density in the planar dimension while maintaining reliable electrical isolation through the vertical dimension. This allows compact layouts without sacrificing circuit stability.
Solution Approach 2:
The insulating layer acts as a mediator that enables close proximity wiring for high density while preventing harmful electrical coupling. This allows the system to achieve both high productivity through compact design and high reliability through effective isolation.
3Reliability
If distance between feeding line and phase shifter electrode is increased to reduce coupling, then reliability is improved, but signal transmission efficiency deteriorates
Solution Approach 1:
The insulating layer serves as a mediator that enables close spacing for efficient signal transmission while preventing harmful coupling. It allows the system to maintain small distances for low loss without suffering from the coupling problems that would normally prevent such close proximity.
Solution Approach 2:
By changing the electrical parameters through the insulating layer (permittivity, thickness), the system optimizes the balance between coupling prevention and signal transmission efficiency, allowing close spacing without excessive coupling while maintaining good signal integrity.
Data Source
AI summary
An electronic device is provided. The electronic device includes a substrate, a feeding line, and a phase shifter electrode. The feeding line is disposed on the substrate and has a signal transmitting end. The phase shifter electrode is disposed on the substrate and has a signal receiving end. The signal transmitting end of the feeding line and the signal receiving end of the phase shifter electrode are a first distance apart. The first distance between the signal transmitting end of the feeding line and the signal receiving end of the phase shifter electrode is in a range from 0.05 mm to 5 mm.