Antenna Isolation Control via Dynamic Frequency Tuning
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Solution Overview
Problem
The existing methods for improving isolation between antennas, such as using spatial distance or isolation ground walls, result in longer design cycles and higher costs, and are not effective for optimizing isolation between all antennas in tight layout areas.
Innovation Solution
An antenna system with an isolation degree control module and a processor that determines target antennas needing optimization and controls the isolation degree between them by adjusting operating frequency bands using adjustable filter circuits and switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spatial distance is used to improve isolation between antennas, then isolation degree is improved, but layout area increases
Solution Approach 1:
The patent changes the parameter of isolation control from fixed spatial arrangement to dynamically adjustable electrical parameters. By using variable filters and switches, the isolation degree can be adjusted through electrical parameter changes rather than physical distance changes, allowing tight layout while maintaining isolation performance.
Solution Approach 2:
The patent introduces dynamic adjustment capability through variable filters and switches that can change isolation characteristics in real-time. This transforms the static isolation provided by fixed spatial distance into a dynamic parameter that can be adjusted as needed, resolving the contradiction between fixed layout requirements and isolation performance.
2Reliability
If isolation ground wall is provided between two antennas, then isolation degree is improved, but device complexity increases
Solution Approach 1:
The patent extracts the isolation function from the physical ground wall structure and implements it through electrical circuit elements (variable filters and switches). This removes the need for complex physical isolation structures while maintaining the isolation function through electrical means.
Solution Approach 2:
The patent replaces the mechanical/physical isolation ground wall with an electrical system consisting of variable filters and switches. This substitution eliminates the need for complex physical structures while achieving the same isolation effect through electrical parameter control.
3Reliability
If isolation device with fixed frequency band is provided, then isolation degree between two fixed antennas is improved, but quantity of devices increases
Solution Approach 1:
The patent makes the isolation device universal by using variable filters and switches that can operate across multiple frequency bands. A single device configuration can serve multiple antennas and frequency bands, eliminating the need for separate fixed-frequency isolation devices for each antenna pair.
Solution Approach 2:
The patent introduces dynamic frequency tuning capability that allows a single isolation device to adapt to different frequency bands. This transforms fixed-frequency isolation devices into dynamically adjustable ones, reducing the total quantity of devices needed while maintaining isolation performance across all frequency bands.
4Reliability
If isolation ground wall or fixed frequency band device is provided, then isolation degree is improved, but design cycle increases
Solution Approach 1:
The patent incorporates variable filters and switches that can be configured through software or control signals, allowing isolation optimization to be performed later in the design process or even in the field. This preliminary inclusion of adjustable elements eliminates the need for extensive simulation and experimentation with physical isolation structures during the initial design stage.
Data Source
AI summary
The present disclosure provides an antenna system and a terminal. The antenna system includes a plurality of antennas; an isolation degree control module connected to the plurality of antennas, respectively; and a processor connected to the isolation degree control module. The processor is configured to determine, among the plurality of antennas, two target antennas needing optimization control of isolation degree, and control, according to the two target antennas and operating frequency bands respectively corresponding to the two target antennas, the isolation degree control module to perform the optimization control of isolation degree between the two target antennas.