Reconfigurable Phase Shifter Network for Wireless Transceivers
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Solution Overview
Problem
Conventional phase shifter implementations in wireless communication systems face challenges in reducing insertion loss, current consumption, and improving adjacent channel leakage ratio (ACLR) and receiver sensitivity, especially when handling multiple frequency bands and carrier aggregation.
Innovation Solution
A configurable phase shifter network with multiple switches and phase shifters is introduced, allowing for selective coupling of phase shifters in signal paths between antennas and transceivers, enabling reconfigurable phase shifting modes to optimize performance across different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional phase shifter implementations are used, then phase shifting functionality is provided, but insertion loss increases and receiver sensitivity deteriorates
Solution Approach 1:
The phase shifter network is made reconfigurable through switches that dynamically connect different phase shifter configurations based on operating conditions. This dynamic reconfiguration allows the system to optimize phase shifting performance for different frequency bands and signal paths, thereby reducing insertion loss and improving receiver sensitivity.
Solution Approach 2:
The phase shifter functionality is divided into multiple discrete phase shifters (first phase shifter, second phase shifter) that can be independently configured and connected through switches. This segmentation allows selective activation of specific phase shifters based on operational requirements, minimizing unnecessary signal loss and improving overall system efficiency.
2Adaptability or versatility
If multiple frequency bands are handled, then carrier aggregation capability is improved, but phase matching accuracy deteriorates
Solution Approach 1:
The reconfigurable phase shifter network dynamically adjusts its configuration based on the active frequency band or carrier aggregation mode. Switches selectively connect different phase shifter combinations to maintain accurate phase matching across multiple frequency bands, ensuring precise phase control despite the complexity of handling multiple bands simultaneously.
Solution Approach 2:
Different phase shifters are optimized for specific frequency bands or signal paths. The switches selectively connect the appropriate phase shifter with the correct characteristics for each frequency band, ensuring that each local segment of the network has the optimal phase shifting properties for its specific operating condition.
3Object-generated harmful factors
If phase shifter network is reconfigured, then ACLR is improved, but device complexity increases
Solution Approach 1:
The phase shifter network is segmented into modular units (multiple phase shifters and switches) that can be independently controlled. This modular structure allows selective activation of specific components to improve ACLR when needed, rather than requiring all components to be active, thereby managing complexity through selective configuration.
Solution Approach 2:
The reconfigurable phase shifter network serves multiple functions: it provides phase shifting for different frequency bands, optimizes ACLR for various carrier aggregation configurations, and maintains compatibility with existing transceiver architectures. This multi-functionality justifies the added complexity by delivering multiple performance benefits from a single integrated solution.
Data Source
AI summary
Certain aspects are generally directed to an apparatus for wireless communication, implemented using a configurable phase shifter network. The configurable phase shifter network generally includes a first switch coupled to a common terminal of the phase shifter network, a first phase shifter coupled between a first terminal of the phase shifter network and the first switch, a second switch coupled in parallel with the first phase shifter, a third switch coupled to the common terminal, a fourth switch coupled to the first terminal, and a second phase shifter coupled between the fourth switch and the third switch.