UWB Pulse Switching Circuit for Low-Power Signal Generation
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Solution Overview
Problem
Existing UWB devices require complex amplifier circuits and high energy consumption for signal generation and processing, making them unsuitable for low-energy, self-contained applications.
Innovation Solution
A method using sinusoidal pulses of alternating polarity and amplitude, generated by electronically controlled switch units with resistances adjusted by parallel transistors, for efficient transmit and receive signal processing in UWB devices, eliminating the need for oscillators and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If amplifier circuits and summing units are used for signal generation, then signal quality is improved, but device complexity increases
Solution Approach 1:
The patent divides the signal generation process into multiple segments by using a sequence of individual pulses with alternating signs instead of a continuous amplified signal. Each pulse can be independently controlled and summed, replacing the need for complex amplifier circuits while maintaining signal integrity through temporal segmentation of the transmit signal.
Solution Approach 2:
The patent replaces the mechanical/electrical amplifier system with a digital/pulse-based system. Instead of using analog amplifiers to generate and shape the signal, the invention uses a series of digitally controlled pulses with alternating polarity that are summed to create the desired signal waveform, eliminating the need for complex analog amplification hardware.
2Reliability
If conventional signal generation methods are used, then signal robustness is maintained, but energy consumption increases
Solution Approach 1:
The patent employs periodic pulsed action instead of continuous signal transmission. By using a sequence of discrete pulses with alternating signs at specific time intervals, the system achieves robust signal transmission while consuming energy only during the pulse intervals, significantly reducing overall power consumption compared to continuous wave methods.
Solution Approach 2:
The patent changes the temporal and amplitude parameters of the signal by using a sequence of pulses with varying amplitudes and alternating signs rather than a continuous constant-amplitude signal. This parameter modulation allows the system to maintain signal robustness through pulse timing and polarity variations while reducing energy consumption by eliminating continuous transmission.
3Use of energy by moving object
If simple pulse generation is used, then energy consumption is reduced, but signal processing reliability deteriorates
Solution Approach 1:
The patent incorporates feedback mechanisms through the use of alternating sign pulses and summation units that provide error correction and signal reinforcement. The alternating polarity sequence allows for differential detection and cancellation of noise, improving signal processing reliability while maintaining low energy consumption through the efficiency of pulse-based rather than continuous-wave operation.
Data Source
AI summary
The method for operating a UWB device having at least one transmitting antenna and/or at least one receiving antenna comprises the following steps: controlling the transmitting antenna (12) or the receiving antenna (12′) with a control pulse signal (13,13′) having a sequence of substantially sinusoidal pulses of alternating polarity and differing amplitudes and particularly having the waveform of a fifth-order Gaussian pulse signal, wherein the transmitting antenna (12) can be alternately supplied with current pulses of differing polarity and differing magnitude by switching on and off first electronic switch units (16) that are coupled to the transmitting antenna (12) and have resistances associated with the amplitudes of the pulses to be generated, wherein each first switch unit (16) has a specifiable, particularly equal, number of first switching transistors (18,19), each having substantially identical on-state resistance values (R), wherein the resistance of a first switch unit is adjusted either by using only one of the first switching transistors (18,19) or by using a plurality of first switching transistors (18,19) connected in parallel, and wherein the first switch units (16) are controlled sequentially according to a specifiable temporal schema and each for a control time interval of a predetermined length.