Pulse Generation Circuit Power Management
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Solution Overview
Problem
Portable communication devices face power efficiency challenges due to continuous transmitter operation, which limits their usage time, especially when power sources are limited, and existing pulse-based modulation techniques struggle to seamlessly transition between low and high power consumption modes while maintaining defined signal specifications for proper communication.
Innovation Solution
An apparatus that generates a defined pulse signal using a current source and impedance element, where the current source is controlled by amplitude and timing signals, and includes a local oscillator and detector to manage power consumption and ensure seamless transitions, with a controller to regulate power levels and authenticate communication sessions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transmitter is operated continuously to maintain communication readiness, then the communication reliability is improved, but the power consumption increases and usage time decreases
Solution Approach 1:
The transmitter operates in periodic pulses rather than continuously. The system transmits signals in defined pulse intervals with controlled duty cycles, allowing the transmitter to remain in low-power mode between pulses while maintaining communication functionality when needed.
Solution Approach 2:
The transmitter dynamically switches between different power consumption modes (low-power standby and high-power transmission) based on communication requirements. The system can seamlessly transition between modes while maintaining defined signal specifications through controlled pulse generation.
2Use of energy by moving object
If the transmitter switches between low and high power consumption modes to extend usage time, then the power efficiency is improved, but the ability to maintain defined signal specifications deteriorates
Solution Approach 1:
The system pre-charges capacitors and prepares circuit components during low-power intervals before pulse transmission begins. This preliminary action ensures that when the pulse is transmitted, the signal immediately meets defined specifications without transient disturbances that would compromise signal quality.
Solution Approach 2:
The system carefully controls and adjusts key parameters such as pulse width, amplitude, and rise/fall times to ensure that transmitted pulses meet defined signal specifications. The current source is precisely controlled to generate pulses with accurate amplitude and timing characteristics despite rapid mode transitions.
3Use of energy by moving object
If pulse-based modulation is used to reduce power consumption, then the power efficiency is improved, but the complexity of seamless mode transition increases
Solution Approach 1:
The system combines the current source, impedance element, and control circuitry into an integrated pulse generation architecture. The current source directly drives the impedance element (antenna or resonator) with minimal intermediate components, simplifying the transition between power modes while maintaining signal integrity.
Solution Approach 2:
The impedance element serves as an intermediary that smooths the transition between power modes. By controlling the current through the impedance element with defined rise and fall times, the system achieves seamless transitions that maintain signal specifications without requiring complex switching circuitry.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution extends the usage time of portable communication devices by efficiently managing power consumption, ensuring seamless transitions between low and high power modes, and maintaining defined signal specifications for effective communication, while also enabling authentication through signal characteristics.
Implementation Method 1
a current source adapted to generate a current based on an amplitude control signal that defines an amplitude of the current and a timing control signal that defines the timing of an amplitude change of the current, and an impedance element through which the current flows to generate the pulse signal
Data Source
AI summary
Apparatus for generating a first signal (e.g., a pulse) including a current source adapted to generate a current based on a second signal that defines an amplitude of the current and a third signal that defines the timing of an amplitude change of the current, and an impedance element through which the current flows to generate the first signal. The impedance element may comprise a resonator having a resonant frequency approximate the center of the first signal frequency spectrum. An LO may be used to generate the third signal to control the timing of the amplitude change of the current. A detector may enable the current source in response to detecting a defined steady-state condition of the LO clock signal, and may disable the current source in response to the completion of the first signal. A controller may generate the second signal to control the current amplitude so as to perform power control and/or other functions.