RF Switch Chip Reuse Through Variable Logic Coding
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Solution Overview
Problem
The increasing complexity and cost of RF front-end modules in communication terminals due to the need for multiple chips with different functions, which limits the miniaturization and integration of systems, and existing component reusable technologies face challenges in scope, interoperability, and anti-interference issues.
Innovation Solution
A variable coding method using at least two identical integrated circuit chips, such as RF switch chips, with different control logic truth tables, where a single logic control signal determines the operational mode by connecting to VDD or GND, allowing the same chip to perform high band or low band logic decoding functions, thereby enabling chip reuse and reducing development costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple different chips are used to implement different functions in RF front-end modules, then system functionality and performance are improved, but device complexity and development cost increase
Solution Approach 1:
The patent implements a universal chip design where a single chip type can perform multiple functions by changing control logic truth tables. The same physical chip is used for both high band and low band operations, with the functionality switched through reconfigurable logic control, eliminating the need for separate chips for different frequency bands
Solution Approach 2:
The patent changes the logical state parameters of the chip by modifying control truth tables and logic control signals. By altering the control logic parameters rather than the physical chip structure, the same chip can adapt to different operational modes and frequency bands, reducing the number of chip types required
2Adaptability or versatility
If multiple different chips are used to implement different functions, then system performance is improved, but manufacturing cost increases
Solution Approach 1:
The patent creates a universal chip that can serve multiple functions across different frequency bands through reconfigurable logic control. This eliminates the need to manufacture and manage multiple different chip types, significantly reducing photolithography costs and development expenses while maintaining full system performance
Solution Approach 2:
The patent merges the functionality of multiple separate chips (high band chip and low band chip) into a single unified chip design. By combining different frequency band operations into one chip with reconfigurable logic, the patent reduces manufacturing complexity and development cost while preserving all required system functions
3Adaptability or versatility
If component reusable technology is applied to RF front-end modules, then integration level is improved, but anti-interference capability deteriorates
Solution Approach 1:
The patent implements dynamic reconfiguration of the chip's control logic truth tables based on operational requirements. The logic control signals can be dynamically changed to switch between different frequency bands and functions, allowing the system to adapt to different conditions while maintaining anti-interference capability through active logic reconfiguration rather than fixed hardware
Data Source
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AI summary
Disclosed is a variable coding method for realizing chip reuse, comprising the following steps: using at least two identical integrated circuit chips, wherein each integrated circuit chip executes different control logic truth tables according to different gating signals; introducing at least one logical control signal as a gating signal; and controlling the logical control signal, so that each integrated circuit chip respectively executes a corresponding control logic truth table. Also disclosed is a communication terminal using the variable coding method for realizing chip reuse. Two or more completely identical integrated circuit chips can be used to realize different logical control functions, thereby simplifying the type of a chip for realizing a system function, and greatly reducing the development costs of an integrated circuit system and the management complexity of a mass production supply chain.