Dual-Radiator Terminal Antenna Layout for Dead-Angle-Free Coverage
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Solution Overview
Problem
Existing terminal devices suffer from poor signal reception and transmission due to design defects in antenna radiation directivity, leading to inconsistent performance based on device orientation.
Innovation Solution
A terminal device design featuring a first radiator on the rear cover and a second radiator on the display screen, utilizing complementary radiation intensities to provide omni-directional coverage, with the first radiator radiating through a decorative cover and the second radiator through a non-display area of the display screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single directional antenna is used in terminal devices, then the device structure is simple, but the signal reception and transmission capacity is poor due to directional radiation patterns creating dead angles
Solution Approach 1:
The antenna system is segmented into multiple independent radiators (first radiator on rear cover, second radiator on display screen) with different radiation directions. Each radiator covers specific spatial zones, and their combined coverage eliminates dead angles, resolving the contradiction between simple structure and reliable omnidirectional signal transmission.
Solution Approach 2:
The patent transitions from single-dimension directional radiation to multi-dimensional omnidirectional radiation by placing radiators on different surfaces (rear cover and display screen) of the terminal device. This spatial distribution across multiple dimensions ensures comprehensive signal coverage in all directions.
2Reliability
If antennas are placed on metal surfaces, then the radiation efficiency is improved, but metal shielding blocks signal transmission in certain directions
Solution Approach 1:
The patent applies different material properties to different locations: the first radiator is placed on the metal rear cover for efficient radiation, while the second radiator is placed on the non-metal display screen area to avoid shielding. This local differentiation of material usage resolves the contradiction between radiation efficiency and shielding avoidance.
Solution Approach 2:
The non-metal display screen area serves as an intermediary surface for the second radiator, allowing signal transmission without metal shielding while still providing a structured mounting location. This intermediary surface enables the radiator to function effectively without the harmful shielding effects of metal.
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
This configuration ensures consistent signal reception and transmission across all directions, enhancing user experience by eliminating dead angles and improving radiation efficiency.
Implementation Method 1
a first radiator (3) arranged in the terminal device and facing the rear cover (1) to radiate a first signal outwards through the rear cover (1)
Implementation Method 2
a second radiator (4) arranged in the terminal device and facing the display screen (2) to radiate a second signal outwards through the display screen (2)
Implementation Method 3
utilize complementarity of radiation intensity of the first radiator (3) and the second radiator (4) in respective radiation directions to provide dead-angle-free radiation for the terminal device in an omni-directional range
Data Source
Figure 1
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Figure 4~5
AI summary
The disclosure relates to a terminal device. The terminal device includes a rear cover (1), a display screen (2), a first radiator (3) and a second radiator (4), where the first radiator (3) is arranged in the terminal device and faces the rear cover (1) to radiate a first signal outwards through the rear cover (1), the second radiator (4) is arranged in the terminal device and faces the display screen (2) to radiate a second signal outwards through the display screen (2).