Delay-Loop Pulse Generating Circuit for Low-Power UWB Frequency Multiplication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pulse generating circuits for Ultra Wide Band (UWB) communication systems face challenges in generating high-frequency pulses with low power consumption, as they require high-speed elements that increase power consumption and are difficult to implement in a compact form, especially for wireless communication between housings with relative displacement.
Innovation Solution
A pulse generating circuit is designed with cascaded delay elements and logical circuits to achieve effective frequency multiplication, allowing for the generation of high-frequency pulses with reduced power consumption by controlling the delay time and using CMOS current mode logic circuits, which simplifies the circuit structure and reduces power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high-speed elements are used to generate high-frequency pulses, then the pulse frequency is improved, but power consumption increases
Solution Approach 1:
The pulse generation function is segmented into multiple delay elements (first, second, and third delay elements) that operate in sequence. Each delay element contributes a portion of the total delay, allowing the circuit to achieve high-frequency pulse generation without requiring a single high-speed element that would consume excessive power.
Solution Approach 2:
The circuit dynamically controls the delay time of each delay element based on the desired pulse frequency. By adjusting the delay parameters in real-time, the system can adapt to different frequency requirements while maintaining low power consumption, avoiding the need for fixed high-speed elements.
2Speed
If high-speed elements are used to generate high-frequency pulses, then the pulse frequency is improved, but circuit complexity increases
Solution Approach 1:
The complex pulse generation function is divided into simpler delay elements and logical circuits. Instead of using a single complex high-speed element, the system uses multiple simple delay stages (first, second, third delay elements) combined with logical operations to achieve the desired high-frequency pulse output.
Solution Approach 2:
The patent replaces traditional mechanical or high-speed electronic pulse generation mechanisms with a delay-based timing system. By substituting direct high-speed switching with controlled delay propagation through multiple stages, the system achieves high-frequency operation with simpler, more manageable circuit components.
3Speed
If delay time is reduced to increase pulse frequency, then the pulse frequency is improved, but power consumption increases
Solution Approach 1:
The total delay time is segmented across multiple delay elements rather than using a single fast element. The first delay element provides a first delay time, the second delay element provides a second delay time, and the third delay element provides a third delay time. This segmentation allows the system to achieve short effective pulse widths without requiring any single element to operate at extremely high speeds, thereby reducing power consumption.
Solution Approach 2:
The delay times of the individual delay elements are dynamically adjustable to optimize the balance between pulse frequency and power consumption. By controlling the delay parameters adaptively, the system can achieve high-frequency pulses when needed while consuming less power during normal operation.
Data Source
AI summary
A pulse generating circuit includes a plurality of delay elements cascaded so as to constitute a predetermined loop, wherein when a predetermined input pulse is supplied to a leading end of the series connection, an effective frequency multiplication is applied to signals which appear at a plurality of portions out of the node portions among the plurality of delay elements and the terminal end portion of the series connection by a logical circuit to obtain an output pulse having a higher frequency than the input pulse.