Antenna Array with Variable Resistors for Beam Tapering
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Solution Overview
Problem
Existing RF communication systems face challenges in efficiently controlling beamforming in mobile devices, particularly in achieving precise beam tapering and adaptive antenna characteristics for improved signal transmission and reception.
Innovation Solution
The implementation of a mobile device with a front-end system featuring a plurality of radio frequency signal conditioning circuits and an antenna array comprising controllable antennas with interconnected antenna elements and variable resistors, allowing for separate control of each variable resistor to adjust beamforming and antenna characteristics such as beam tapering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If antenna elements are interconnected by fixed resistances, then the antenna structure is simple, but beamforming control precision is insufficient
Solution Approach 1:
The patent applies the dynamics principle by replacing fixed resistances with controllable variable resistors in the antenna element interconnections. These variable resistors can dynamically adjust their resistance values under control signals, enabling real-time beamforming control and precise antenna characteristic adjustment without requiring complex switching networks.
Solution Approach 2:
The patent implements parameter changes by using variable resistors whose resistance values can be continuously adjusted. This allows dynamic modification of the antenna array's electrical characteristics, enabling precise control over beamforming patterns, beam direction, and beam width while maintaining a relatively simple structural configuration.
2Adaptability or versatility
If multiple switches are used to control antenna elements, then beamforming control is flexible, but device complexity increases
Solution Approach 1:
The patent replaces discrete switching control with continuous variable resistance control. Instead of using multiple switches to select between fixed impedance states, the variable resistors provide continuous impedance adjustment, achieving flexible beamforming control with a simpler control architecture that requires fewer discrete components.
Solution Approach 2:
The patent achieves control flexibility through parameter changes by adjusting the resistance values of variable resistors. This continuous parameter adjustment capability provides adaptability equivalent to or greater than multi-switch configurations, while reducing the number of control elements and simplifying the overall control circuit design.
3Measurement precision
If antenna elements are independently controlled, then beamforming precision is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by providing independent control capability to each antenna element through individually connected variable resistors. This allows precise independent adjustment of each element's contribution to the beamforming pattern, achieving high beamforming precision while maintaining a modular structure that can be manufactured using standard PCB techniques and component mounting processes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables precise control over beamforming and antenna characteristics, enhancing signal transmission and reception efficiency, and improving communication performance in mobile devices.
Implementation Method 1
a first controllable antenna including a plurality of antenna elements interconnected by a plurality of variable resistors
Data Source
AI summary
Apparatus and methods for antenna arrays for beamforming are disclosed. In certain embodiments, a mobile device includes a front-end system including a plurality of radio frequency signal conditioning circuits, an antenna array including a plurality of controllable antennas each connected to a corresponding one of the plurality of radio frequency signal conditioning circuits, and a control circuit. The plurality of controllable antennas include a first controllable antenna including a plurality of antenna elements interconnected by a plurality of variable resistors. Additionally, the control circuit is configured to control the plurality of variable resistors to control an antenna characteristic of the first controllable antenna.