Terminal Antenna Layout Using Orthogonal Ground Currents for Isolation
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Solution Overview
Problem
Mutual interference between multiple antennas in electronic devices affects overall radiation performance, necessitating improved isolation to enhance wireless communication efficiency.
Innovation Solution
A high-isolation terminal antenna system is designed by combining current loop and magnetic loop antennas with specific positional and feeding arrangements to excite orthogonal currents on the ground plane, ensuring high isolation and good radiation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are arranged in an electronic device to support wireless communication requirements, then the wireless communication capability is improved, but mutual interference between antennas increases
Solution Approach 1:
The patent uses the ground plane as a parasitic element that is intentionally driven into resonance by the active radiating element. This converts what would normally be a source of interference (the ground plane) into a beneficial resonant structure that enhances radiation performance and provides stable return loss distribution across a wide frequency band.
Solution Approach 2:
The ground plane serves multiple functions: it acts as both the reference ground for the active radiating element and as a parasitic resonant element. This multi-functionality allows the antenna system to achieve wideband operation and stable performance without requiring additional components.
2Adaptability or versatility
If multiple antennas operate simultaneously, then wireless communication functionality is enhanced, but isolation between antennas deteriorates
Solution Approach 1:
The patent employs three-dimensional spatial arrangement of multiple antennas with different orientations. By positioning antennas in different spatial dimensions and orientations, the system achieves high isolation between antennas while maintaining simultaneous operation capability, effectively utilizing spatial separation to reduce mutual coupling.
3Ease of manufacture
If conventional antenna arrangements are used, then manufacturing is simplified, but radiation performance deteriorates due to mutual interference
Solution Approach 1:
The ground plane automatically serves as the parasitic resonant element without requiring separate components or complex assembly. The existing ground structure in the electronic device is utilized and driven into resonance, eliminating the need for additional parasitic elements and simplifying manufacturing while enhancing radiation performance.
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 system achieves high isolation and good radiation performance by orthogonally exciting currents, enhancing wireless communication efficiency and reducing mutual interference between antennas.
Implementation Method 1
When the current loop antenna operates, a uniform magnetic field is distributed between a radiating element of the current loop antenna and a reference ground
Implementation Method 2
When the magnetic loop antenna operates, a uniform electric field is distributed between a radiating element of the magnetic loop antenna and the reference ground
Implementation Method 3
The first antenna and the second antenna are arranged at a same edge of the electronic device; or the first antenna and the second antenna are arranged at two opposite edges of the electronic device
Data Source
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AI summary
Embodiments of this application relate to the field of antenna technologies, and disclose a high-isolation terminal antenna system, to provide good radiation performance and isolation by combining current loop antennas and/or magnetic loop antennas with different position features. A specific solution is as follows: The terminal antenna system includes a first antenna and a second antenna, and the first antenna and the second antenna include at least one current loop antenna or magnetic loop antenna. When the current loop antenna operates, a uniform magnetic field is distributed between a radiating element of the current loop antenna and a reference ground. When the magnetic loop antenna operates, a uniform electric field is distributed between a radiating element of the magnetic loop antenna and the reference ground. The first antenna and the second antenna are arranged at a same edge of an electronic device, or are arranged at two opposite edges of the electronic device.