RF Module Switch Layout for Multi-Band Carrier Aggregation
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Solution Overview
Problem
Radio frequency modules designed for carrier aggregation face increased size and manufacturing costs due to the need for multiple filters and switches for different communication band combinations, which complicates their use in various modes and regions.
Innovation Solution
A radio frequency module configuration that includes a common filter and individual filters, along with a switch circuit capable of connecting multiple terminals, allowing for shared components across different modes and regions, reducing the number of filters and switches required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate circuits are installed for respective communication bands to achieve different modes, then the communication functionality for different regions is improved, but the number of filters increases and the size of the radio frequency module increases
Solution Approach 1:
The patent applies universality by designing a common circuit configuration that can be used across multiple communication modes and regions. Instead of creating separate circuits for each mode, the same basic circuit is shared, reducing the overall number of components and module size while maintaining the ability to support different communication bands and regions through configuration rather than hardware variation.
2Ease of manufacture
If a common circuit configuration is used for different modes, then the manufacturing efficiency and cost are improved, but the number of filters must be increased to support different communication bands
Solution Approach 1:
The patent applies segmentation by dividing the filter configuration into common and mode-specific portions. The common circuit configuration is shared across all modes, while only the necessary filters for each specific mode are included. This selective segmentation allows manufacturing efficiency to be improved through commonality while minimizing the total number of filters by only including what is needed for each mode.
3Adaptability or versatility
If multiple filters are installed to support different communication band combinations, then the adaptability for carrier aggregation is improved, but the device complexity increases
Solution Approach 1:
The patent applies dynamics by making the circuit configuration adaptable through software or control mechanisms rather than fixed hardware. The common circuit configuration can be dynamically configured to support different communication band combinations for carrier aggregation, allowing adaptability to be improved without permanently increasing device complexity through multiple fixed circuits.
Data Source
AI summary
Band A (Tx) includes Band C (Tx), and Band B (Rx) includes Band C (Rx). A radio frequency module includes: a switch including a first common terminal and first, second, and third selection terminals; a transmit filter for Band A (Tx) and a receive filter for Band B (Rx), which are connected to the first selection terminal; a transmit filter for Band B (Tx) and a receive filter for Band A (Rx), which are connected to the second selection terminal; and a transmit filter for Band D (Tx) and a receive filter for Band D (Rx), which are connected to the third selection terminal, wherein in the first area, the first common terminal is connected to the first selection terminal and the second selection terminal, and in the second area, the first common terminal is connected to the first selection terminal and the third selection terminal.