Patch Antenna Dual Feeds for Single-Ended and Differential RF
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Solution Overview
Problem
Current RF communication systems face challenges in efficiently managing and transmitting both single-ended and differential radio frequency signals across various frequency bands, particularly in 5G communication standards, which affects signal quality and data rates.
Innovation Solution
The implementation of a mobile device with a dual radio frequency signal conditioning system, including a single-ended and a differential signal conditioning circuit, connected to a patch antenna system that can handle both single-ended and differential signal feeds, allowing for simultaneous transmission and reception across harmonically related frequencies, thereby enhancing beamforming capabilities and frequency coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single antenna is used to handle both single-ended and differential signals, then device complexity is reduced, but signal quality and transmission efficiency deteriorate
Solution Approach 1:
The antenna is segmented into multiple independent feed systems: a first signal feed for single-ended signals and a second signal feed for differential signals. Each feed has its own signal conditioning circuit, allowing independent optimization for different signal types and frequency bands while maintaining a unified antenna structure.
Solution Approach 2:
The antenna structure is designed with multi-functionality to support both single-ended and differential signal modes. The same antenna element can operate in different modes depending on which signal feed is activated, enabling the antenna to serve multiple purposes without requiring separate antenna structures for each signal type.
2Reliability
If separate antenna systems are used for single-ended and differential signals, then signal quality is improved, but device complexity increases
Solution Approach 1:
The patent merges the single-ended and differential signal feeds into a single unified antenna structure. Both signal feeds share the same antenna element and radiation structure, combining what would traditionally be separate antenna systems into one integrated unit, thereby reducing overall device complexity while maintaining signal quality through independent feed design.
3Adaptability or versatility
If both single-ended and differential signal feeds are supported in the same antenna, then frequency coverage is improved, but interference increases
Solution Approach 1:
The patent converts the potentially harmful harmonic interference into a beneficial feature by designing the antenna to operate at harmonically related frequencies. The differential signal feed operates at a frequency that is harmonically related to the single-ended signal frequency, and the antenna structure is optimized to efficiently radiate at both frequencies, turning what would be interference into extended frequency coverage.
Solution Approach 2:
The signal conditioning circuits are designed with adjustable parameters to optimize performance at different frequencies. The first signal conditioning circuit is optimized for the fundamental frequency while the second is optimized for the harmonically related frequency, allowing the system to adapt to different operating conditions and minimize interference through parameter optimization.
Data Source
AI summary
Antenna systems with both single-ended and differential signal feeds are provided herein. In certain embodiments, a mobile device includes a front end system including a first radio frequency signal conditioning circuit configured to condition a first radio frequency signal that is single-ended and of a first frequency, and a second radio frequency signal conditioning circuit configured to condition a second radio frequency signal that is differential and of a second frequency. The mobile device further includes an antenna including a first signal feed connected to the first radio frequency signal conditioning circuit and a pair of second signal feeds connected to the second radio frequency signal conditioning circuit.