Multiple-Divisor Prescaler with Changeable Trigger Edges
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional prescaler devices face challenges in efficiently implementing divisors like 30/31, which are necessary for frequency configuration in modern wireless communication systems, especially due to increased power consumption and limited operating speed at higher transmission frequencies.
Innovation Solution
A multiple-divisor prescaler apparatus using changeable trigger edges, comprising an odd/even core divider, a divisor control logic unit, and an n-order divided-by-2 divider with changeable trigger edges, allows for increased division range up to 2n−1+2˜2n+1 by modifying trigger edges and using combinational logic for odd number insertion mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional prescaler devices use simple delay-based division to achieve multi-modulus divide ratio, then the device complexity is low and ease of manufacture is good, but the division range is limited and cannot efficiently implement divisors like 30/31
Solution Approach 1:
The patent applies dynamics by making the trigger edges of divided-by-2 dividers changeable rather than fixed. The trigger edge selection is dynamically controlled by control signals that select between different edge combinations (rising-rising, rising-falling, falling-rising, falling-falling) based on the desired division ratio, enabling the prescaler to adapt to different division requirements including 30/31 divisors
Solution Approach 2:
The patent segments the division function into multiple divided-by-2 dividers (first, second, third, and fourth dividers) that can be independently controlled with different trigger edges. This segmentation allows each divider to contribute differently to the overall division ratio, enabling complex divisors like 30/31 to be achieved through coordinated operation of simpler divider units
2Speed
If prescaler operates at higher transmission frequencies to meet flexible needs of modern wireless communication systems, then the operating frequency range is expanded, but the operating speed is limited and power consumption increases
Solution Approach 1:
The patent changes the operational parameters by using different trigger edge combinations for the divided-by-2 dividers. By selecting appropriate trigger edges (rising or falling) for each divider stage, the prescaler can optimize its operation for different frequency ranges and division ratios, improving operating speed while managing power consumption through parameter optimization rather than hardware changes
Data Source
AI summary
Disclosed is an apparatus for multiple-divisor prescaler, which includes an odd/even core divider, a divisor control logic unit, an odd number inserted mechanism, and an n-order divided-by-2 divider with changeable trigger edges. This invention uses a clock toggle mechanism to vary the trigger edges of each divided-by-2 divider in the n-order divider, and associates the odd/even core divider to realize the multiple-divisor prescaler apparatus. Thereby, it achieves the purpose of being divided by 30/31. In addition, it increases the divisor range up to 2n−1+2 and 2n+1 through the use of the clock toggle mechanism.