Segmented Antenna Module for Axial Ratio and Power Trade-off
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Solution Overview
Problem
Existing circularly polarized antenna systems face challenges in maintaining a favorable axial ratio and reducing power consumption, especially when not all antenna elements are used, as they often require all elements to operate to achieve optimal performance.
Innovation Solution
The antenna module and driving method utilize a segmented configuration with distribution-combination circuits and amplifiers, allowing selective operation of circularly polarized antenna elements to form sequential arrays, thereby maintaining axial ratio and reducing power consumption by using fewer amplifiers and segments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all circularly polarized antenna elements are used to maintain favorable axial ratio, then axial ratio is improved, but power consumption increases
Solution Approach 1:
The antenna elements are divided into multiple segments, each connected to a separate amplifier. This allows selective activation of only the necessary number of segments and amplifiers based on communication conditions, maintaining axial ratio performance while reducing power consumption by keeping unused amplifiers in standby mode
2Use of energy by moving object
If fewer antenna elements are used to reduce power consumption, then power consumption is reduced, but axial ratio deteriorates
Solution Approach 1:
The system dynamically adjusts the number of active antenna elements and amplifiers based on communication distance and data rate requirements. The control unit determines the optimal configuration in real-time, ensuring axial ratio performance is maintained only when necessary while reducing power consumption when full performance is not required
3Reliability
If all segments and amplifiers are activated to ensure optimal performance, then axial ratio is maintained, but device complexity increases
Solution Approach 1:
The antenna system is segmented into multiple independent units, each with its own amplifier. This modular structure allows the system to activate only the necessary number of segments and amplifiers based on communication requirements, reducing the effective complexity while maintaining the capability to achieve optimal performance when needed
Data Source
AI summary
A plurality of segments each include one input-output port and a plurality of antenna ports. A plurality of subarrays each include a plurality of elements connected to any of the plurality of antenna ports. The plurality of elements constitute a sequential array for each subarray. Each of the plurality of segments includes a distribution-combination circuit that distributes a signal input to a first port to the plurality of antenna ports and that combines signals input to the respective plurality of antenna ports to output a combined signal from the first port, and a first amplifier connected between the input-output port and the first port. In the plurality of subarrays, the plurality of antenna ports to which the respective plurality of elements included in one subarray are connected are included in one segment.