Dual-Antenna RF Architecture for Simultaneous Voice and Data
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Solution Overview
Problem
Mobile devices face challenges in supporting multiple frequency bands without increasing volume, as they need to accommodate more antennas or have antennas cover broader frequency ranges, leading to inconvenient designs.
Innovation Solution
A mobile apparatus with a dual-antenna RF circuit architecture, where a primary antenna handles high-speed data and voice communications for LTE and CDMA systems, and a secondary antenna handles GSM and UMTS systems, optimizing antenna performance by allocating specific communication modes to each antenna based on clearance area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mobile phone equips with more antennas to support multiple frequency bands, then the communication capability is improved, but the volume of the mobile phone increases
Solution Approach 1:
The patent segments the antenna system into a first antenna for LTE high-speed data communication and a second antenna for GSM/UMTS voice communication. This segmentation allows each antenna to be optimized for its specific frequency band and communication mode, enabling multi-band support without requiring a single oversized antenna or increasing overall device volume.
Solution Approach 2:
The patent implements a universal RF front-end architecture where the second RF front-end unit serves dual purposes: handling GSM and UMTS voice communications through the second antenna, and also providing paths for LTE data communication through the first antenna. This multi-functionality allows the system to support multiple frequency bands and communication modes without proportionally increasing device volume.
2Adaptability or versatility
If an antenna covers more frequency ranges to support multiple communication modes, then the adaptability is improved, but the antenna design complexity and performance degradation occur
Solution Approach 1:
The patent divides the frequency band coverage into distinct segments: the first antenna is dedicated to LTE frequency bands for high-speed data communication, while the second antenna is dedicated to GSM and UMTS frequency bands for voice communication. This segmentation simplifies each antenna's design by optimizing it for its specific frequency range rather than attempting to cover all bands with a single complex antenna.
Solution Approach 2:
The patent applies local quality optimization by designing the first antenna with characteristics optimized for LTE frequency ranges and the second antenna with characteristics optimized for GSM/UMTS frequency ranges. Each antenna has localized optimization for its specific operational domain, improving overall system performance while avoiding the complexity of a single multi-band antenna design.
3Adaptability or versatility
If multiple RF front-end units are used to support different communication modes, then the communication versatility is improved, but the device complexity increases
Solution Approach 1:
The patent implements universality through the second RF front-end unit, which is designed to handle multiple communication modes (GSM, UMTS, and LTE) through the second antenna. This multi-functional design reduces the need for completely separate RF front-end units for each communication mode, thereby supporting communication versatility while controlling overall device complexity.
Solution Approach 2:
The patent merges the RF front-end functionality for different communication modes into integrated units. The second RF front-end unit combines paths for GSM/UMTS voice communication and LTE data communication, allowing multiple communication modes to share common RF infrastructure. This merging approach reduces the total number of separate RF front-end units required while maintaining support for multiple communication modes.
Data Source
AI summary
Mobile apparatus with radio frequency architecture supporting simultaneous data and voice communications, in an embodiment, includes first and second antennas, a tranceiver unit, first and second radio frequency (RF) front-end units. The tranceiver unit has a plurality of first, second, and third RF terminals. The first RF front-end unit is coupled between the first antenna and first RF terminals to provide first paths for a high-speed data communication mode and a first mobile communication mode between the first RF terminals and first RF front-end unit. The second RF front-end unit is coupled between the second antenna and second and third RF terminals to provide second paths for at least one second communication mode between the second RF terminals and second RF front-end unit and to provide third paths for the high-speed data communication mode and first mobile communication mode between the third RF terminals and second RF front-end unit.