Portable Communication Antenna Design with Segmented Radiators
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Solution Overview
Problem
Traditional portable communication devices face challenges with large circuit sizes and poor communication quality due to high correlation coefficients between high-frequency and low-frequency band antennas installed on the same surface, restricting space utilization and design reliability.
Innovation Solution
A portable communication apparatus design featuring separate antenna radiators for high-frequency and low-frequency bands, each with distinct feeding points and a matching circuit to minimize correlation and optimize impedance matching, allowing for better space utilization and improved communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If different antennas for high-frequency and low-frequency band signals are installed on the same surface, then surface area is saved, but the correlation coefficient between antennas becomes very high causing large circuit size and poor communication quality
Solution Approach 1:
The patent divides the antenna system into separate high-frequency and low-frequency antenna radiators with distinct feeding points and independent matching circuits. This segmentation reduces the correlation coefficient between antennas while maintaining compact form factor, thereby improving communication quality without sacrificing surface area efficiency.
2Area of stationary object
If different antennas for high-frequency and low-frequency band signals are installed on the same surface, then surface area is saved, but the whole circuit size becomes very large
Solution Approach 1:
The patent segments the antenna circuit into separate high-frequency and low-frequency paths with independent matching circuits. This segmentation allows for optimized individual circuit designs that reduce overall circuit size while maintaining compact antenna placement on the same surface.
Solution Approach 2:
The patent applies local quality optimization by designing specific matching circuits tailored to each frequency band's impedance characteristics. The high-frequency matching circuit and low-frequency matching circuit are independently optimized for their respective bands, reducing overall circuit complexity while maintaining efficient signal transmission.
3Area of stationary object
If different antennas for high-frequency and low-frequency band signals are installed on the same surface, then surface area is saved, but correlation coefficient becomes very high
Solution Approach 1:
The patent segments the antenna system into separate radiating elements and feeding points for high-frequency and low-frequency bands. This physical and electrical segmentation reduces mutual coupling and correlation between antennas, minimizing signal interference while allowing compact co-location on the same surface.
Solution Approach 2:
The patent introduces separate matching circuits as intermediary components between the antennas and the signal processing system. These matching circuits act as mediators that isolate the high-frequency and low-frequency antenna paths, reducing direct interaction and correlation between the antennas while maintaining efficient impedance matching for each band.
Data Source
AI summary
A portable communication apparatus includes a first antenna radiator, a second antenna radiator, a first feeding point, a second feeding point, and a matching circuit. The first antenna radiator is used for radiating a high-frequency band signal. The second antenna radiator is used for radiating a low-frequency band signal. The first feeding point is coupled to the first antenna radiator and is utilized for processing feed-in or feed-out of the signal of first antenna radiator. The second feeding point is coupled to the second antenna radiator and is utilized for processing feed-in or feed-out of the signal of second antenna radiator. The first feeding point is separate from the second feeding point. The matching circuit is coupled to the first and second feeding points, and used for impedance matching with the first antenna radiator and the second antenna radiator.