Laptop Antenna Placement Reduces Cable Loss
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Solution Overview
Problem
Laptop personal computers with radio communication antennas face challenges in minimizing transmission loss due to cable length, especially at higher frequencies, which affects communication performance.
Innovation Solution
The design incorporates a pair of radio communication antennas where the main antenna is positioned orthogonally and the sub antenna parallel to the connecting unit, with shorter cable lengths connecting them to the radio communication module, enhancing space diversity and reducing cable loss across various frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antennas are mounted at upper end parts of display unit, then radio communication function is achieved, but cable length increases causing transmission loss especially at higher frequencies
Solution Approach 1:
The patent applies dimensionality change by positioning antennas at orthogonal and parallel directions relative to the connecting unit rather than conventional placements. The main antenna is placed at an end part orthogonal to the connecting unit, while the sub antenna is placed at an end part parallel to the connecting unit, creating spatial diversity in multiple dimensions to reduce cable length and transmission loss
Solution Approach 2:
The patent implements local quality by assigning different spatial orientations and positions to the main antenna and sub antenna. Each antenna is strategically positioned at specific end parts of the display housing with distinct orientations (orthogonal vs. parallel) to optimize their individual cable paths and reduce overall transmission loss
2Reliability
If multiple antennas are used for space diversity, then communication reliability improves, but device complexity increases
Solution Approach 1:
The patent applies asymmetry by configuring the main antenna and sub antenna with different orientations relative to the connecting unit. The main antenna is positioned orthogonal to the connecting unit while the sub antenna is positioned parallel to it, creating an asymmetric arrangement that achieves space diversity without requiring complex symmetric configurations
Solution Approach 2:
The patent segments the antenna system into two distinct functional components: a main antenna for primary communication and a sub antenna for diversity. This segmentation allows each antenna to be independently positioned and oriented to optimize performance while maintaining manageable system complexity
Data Source
AI summary
According to an embodiment, a laptop personal computer comprises a display housing with a display unit, a main body housing which houses a radio communication module, a connecting unit which rotatably connects between the display housing and the main body housing, a first radio communication antenna as a main antenna which is formed at an end part of the display housing almost orthogonal to the connecting unit, a second radio communication antenna as a sub antenna which is formed at an end part of the display housing in almost parallel with the connecting unit, the second radio communication antenna making a pair with the first radio communication antenna, a first cable which connects the first radio communication antenna to the radio communication module through the connecting unit, and a second cable which connects the second radio communication antenna to the radio communication module through the connecting unit.