Multi-Antenna RF Packaging for Hand-Blocking Resilience
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Solution Overview
Problem
Current mmW radio architectures in smartphones, based on analog beamforming, are bulky and prone to signal loss when antenna panels are blocked by hands, leading to reduced data rates or dropped links, as they can only use a single beam at a time and struggle with abrupt changes in channel conditions.
Innovation Solution
An electronic device with multiple antennas and RF circuitries, each with different orientations and encapsulations, connected via zero-IF signals, allowing the baseband processor to dynamically switch between operating and stand-by modes based on signal strength and sensor data to optimize antenna usage and prevent signal blocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If analog beamforming is used with a single antenna panel, then device complexity is reduced, but signal reliability deteriorates when the antenna panel is blocked by hands
Solution Approach 1:
The antenna system is segmented into multiple antenna panels with different orientations (e.g., first antenna panel oriented in a first direction, second antenna panel oriented in a second direction). This segmentation allows the device to switch between panels based on hand-blocking conditions, improving signal reliability without requiring complex digital beamforming across all antennas simultaneously.
Solution Approach 2:
The system dynamically switches between different antenna panels based on detected hand-blocking conditions. The baseband processor monitors channel conditions and selectively activates appropriate antenna panels, creating a dynamic adaptation mechanism that maintains reliability while keeping overall system complexity manageable through conditional activation rather than continuous full-system operation.
2Reliability
If multiple antenna panels with different orientations are used, then signal reliability during hand-blocking is improved, but device complexity increases
Solution Approach 1:
The antenna system is segmented into multiple antenna panels with different orientations (e.g., first antenna panel oriented in a first direction, second antenna panel oriented in a second direction). This segmentation allows the device to switch between panels based on hand-blocking conditions, improving signal reliability without requiring complex digital beamforming across all antennas simultaneously.
Solution Approach 2:
The system dynamically switches between different antenna panels based on detected hand-blocking conditions. The baseband processor monitors channel conditions and selectively activates appropriate antenna panels, creating a dynamic adaptation mechanism that maintains reliability while keeping overall system complexity manageable through conditional activation rather than continuous full-system operation.
3Adaptability or versatility
If digital beamforming is implemented, then flexibility in antenna placement and simultaneous multi-user support is improved, but device complexity and power consumption increase
Solution Approach 1:
Instead of implementing full digital beamforming across all antenna panels simultaneously, the system applies partial digital processing only when needed. The baseband processor performs digital beamforming operations selectively based on communication scenarios, activating advanced processing only for multi-user MIMO or specific channel conditions, thereby reducing overall complexity while maintaining adaptability when required.
4Device complexity
If a single beam is used for transmission, then device complexity is reduced, but the ability to track abrupt channel changes deteriorates
Solution Approach 1:
The system dynamically switches between different antenna panels based on detected hand-blocking conditions. The baseband processor monitors channel conditions and selectively activates appropriate antenna panels, creating a dynamic adaptation mechanism that maintains reliability while keeping overall system complexity manageable through conditional activation rather than continuous full-system operation.
Solution Approach 2:
Multiple antenna panels are pre-configured with different orientations before communication begins. This preliminary arrangement allows the system to quickly switch to an appropriate panel when channel conditions change abruptly, without requiring complex real-time beam recalibration. The pre-positioned panels provide ready-to-use beam directions that can be activated immediately upon detecting blocking conditions.
Data Source
AI summary
An electronic device comprising: a first antenna and a second antenna; first radio frequency, RF, circuitry and second RF circuitry, the first RF circuitry being connected to the first antenna and the second RF circuitry being connected to the second antenna and each of the first and the second RF circuitry comprising one or more of a Low Noise amplifier, a Mixer, a Local oscillator, a Phase locked loop, an analog filter, a Voltage Gain Amplifier, an analog to digital converter, ADC, a digital filter, a Power Amplifier and a digital to analog converter, DAC; and a baseband processor, connected or connectable via a zero-intermediate frequency, zero-IF, signal to the first and the second RF circuitries; and wherein the first antenna is integrated together with the first RF circuitry in a first encapsulation, the second antenna is integrated together with the second RF circuitry in a second encapsulation, the second encapsulation preferably being different from the first encapsulation, and wherein the first and second antennas have different orientations. A corresponding baseband processor is also disclosed.