Antenna Structure for Inter-Band Carrier Aggregation
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Solution Overview
Problem
Conventional antenna designs for electronic devices face challenges in maintaining efficient reception performance across multiple frequency bands, particularly in inter-band carrier aggregation, leading to signal degradation due to inadequate isolation and increased insertion loss.
Innovation Solution
The implementation of a separate antenna structure for each frequency band, utilizing a combination of antenna elements and switch configurations to selectively route signals, allows for improved inter-band carrier aggregation while maintaining reception performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single antenna covers all frequency bands (LB, MB, HB), then device complexity is reduced, but signal reception performance and isolation between bands deteriorate
Solution Approach 1:
The patent divides the antenna system into separate antenna elements for different frequency bands (LB antenna, MB antenna, HB antenna). Each antenna is dedicated to specific bands, preventing signal interference and isolation issues that occur in single-antenna designs. This segmentation resolves the contradiction by sacrificing some structural complexity to achieve reliable multi-band reception.
Solution Approach 2:
The patent introduces a switching circuit as an intermediary component that selectively connects different antenna elements to the receiver based on the operating frequency band. This mediator enables the system to use multiple specialized antennas without requiring simultaneous connection of all bands, thus maintaining good reception performance while managing system complexity.
2Adaptability or versatility
If a radiator covers all frequency bands, then antenna coverage is improved, but signal isolation between adjacent bands (MB and HB) deteriorates
Solution Approach 1:
The patent creates separate radiator structures optimized for specific frequency ranges: LB radiator for low bands, MB radiator for middle bands, and HB radiator for high bands. This segmentation ensures that each radiator operates in its optimal frequency range with proper isolation, preventing harmful interference between adjacent bands while maintaining comprehensive frequency coverage through the switching system.
3Productivity
If switching between MB and HB is implemented, then inter-band CA performance is improved, but device complexity and component requirements increase
Solution Approach 1:
The patent implements a dynamic switching mechanism that adapts the antenna connection based on the required frequency bands for carrier aggregation. The switching circuit dynamically selects appropriate antenna combinations (e.g., connecting LB+HB antennas for band 1+band 7 CA, or MB+HB for band 3+band 41 CA), enabling flexible inter-band CA support while managing complexity through intelligent control rather than fixed complex hardware.
4Adaptability or versatility
If multiple antennas are loaded to cover many frequency bands, then network compatibility is improved, but loading space in the device is insufficient
Solution Approach 1:
The patent designs antenna elements and radiators that can serve multiple frequency bands through proper impedance matching and resonant structure design. For example, certain radiator configurations can support both MB and HB operations, and the switching system enables these multi-functional antennas to be shared across different band combinations, reducing the total number of separate antennas needed while maintaining comprehensive frequency coverage.
Data Source
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AI summary
Disclosed is an electronic device including a first antenna element configured selectively to receive signals of a first frequency band and a second frequency band or of the first frequency band and a third frequency band, a second antenna element configured to receive a signal of the third frequency band, a transceiver configured to be electrically connected with the first antenna element and the second antenna element, and a processor configured to be electrically connected with the transceiver. The electronic device performs carrier aggregation using the second frequency band and the third frequency band.