Communication Antenna Dynamic Frequency Tuning for Thin Terminals
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Solution Overview
Problem
Current communication antennas in mobile terminals with metal frames face challenges in expanding communication bands without increasing thickness, and some frequency bands experience poor communication quality.
Innovation Solution
A communication antenna system with a regulating circuit that includes a switch, controller, and a regulating assembly of electronic components, allowing the antenna to resonate in multiple frequency ranges by selectively connecting components, thereby extending communication frequency bands and improving quality across various bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the thickness of the mobile terminal is increased to expand communication bands, then the communication frequency range can be extended, but the terminal thickness increases which is not desirable
Solution Approach 1:
The patent implements a dynamic frequency tuning mechanism where a controller selectively connects different electronic components (capacitors and inductors) in the regulating assembly to the antenna circuit based on the target frequency range. This dynamic reconfiguration allows the antenna to adapt its resonant frequency without physical changes to the antenna structure or terminal thickness, resolving the contradiction between frequency range expansion and thickness constraint.
Solution Approach 2:
The patent changes the electrical parameters (capacitance and inductance values) of the antenna circuit by switching between different electronic components in the regulating assembly. By adjusting these parameters dynamically, the antenna can resonate at different frequency ranges (700-2700 MHz) without altering the physical dimensions of the terminal, thus expanding communication bands while maintaining thin profile.
2Length of stationary object
If a fixed antenna design is used to maintain thin terminal profile, then terminal thickness is reduced, but the communication quality in certain frequency bands deteriorates
Solution Approach 1:
The patent employs a dynamic component switching mechanism controlled by a controller that selects appropriate electronic components based on the operating frequency range. This dynamic adaptation ensures optimal communication quality across different frequency bands (700-2700 MHz) while maintaining a compact antenna structure suitable for thin terminals, preventing quality deterioration in specific bands.
Solution Approach 2:
The regulating assembly with multiple switchable electronic components provides multi-functionality to the antenna system, enabling it to operate effectively across wide frequency ranges (700-2700 MHz). This universal design allows a single thin terminal structure to maintain good communication quality in various frequency bands by dynamically adjusting the circuit parameters through component switching.
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 solution enables the communication antenna to cover a wider range of frequency bands from 700 MHz to 2700 MHz, enhancing communication performance without increasing the thickness of the mobile terminal, and improving communication quality across different frequency bands.
Implementation Method 1
The controller is configured to control the switch to connect one or more electronic components of the regulating assembly to the circuit, so that the connected one or more electronic components make the communication antenna resonate in one of a plurality of frequency ranges
Data Source
AI summary
A communication antenna, a method for controlling a communication antenna and a terminal are provided. The communication antenna includes a first passive unit, a stimulation receiving unit, and a second passive unit. The first passive unit and the second passive unit are respectively coupled to ground. The stimulation receiving unit is electrically coupled to a radio frequency module so as to receive an electrical signal transmitted by the radio frequency module. The first passive unit includes a regulating circuit that includes a switch, a controller, and a regulating assembly. The regulating assembly includes a plurality of electronic components. The controller is configured to control the switch to connect one or more electronic components of the regulating assembly to the circuit. The connected electronic components make the communication antenna resonate in one of a plurality of frequency ranges.