Dual-Input DC Power Control for VSAT Transmitters
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Solution Overview
Problem
Conventional VSAT power amplifiers require significant power consumption for radio transmission, and existing power switches lack efficient control mechanisms to manage this consumption effectively.
Innovation Solution
A dual-input DC power control system utilizing a phase lock oscillator, power supply, and a switch circuit with P-channel metal-oxide semiconductor field effect transistors and NPN bipolar transistors to manage power flow based on specific voltage levels, enabling efficient power amplification and reduction in power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a power amplifier is used to provide sufficient radio wave power, then transmission capability is improved, but power consumption increases significantly
Solution Approach 1:
The patent implements dynamic control of the power amplifier through a dual-input switch that responds to changing operational conditions (locking signal presence, power supply status). The amplifier's power state is adjusted dynamically rather than remaining static, allowing the system to consume power only when transmission is actually needed or appropriate.
Solution Approach 2:
The system uses feedback from the phase lock oscillator's locking signal and the power supply status to control the power amplifier. The switch monitors these conditions and automatically adjusts the amplifier's power state, creating a closed-loop control system that optimizes power consumption based on real-time operational requirements.
2Use of energy by moving object
If a power switch is introduced to control the power amplifier, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The switch circuit performs multiple functions simultaneously: it controls the power amplifier's power state, responds to the phase lock oscillator's locking signal, and monitors power supply status. By consolidating these control functions into a single integrated switch mechanism, the patent avoids adding excessive complexity while achieving comprehensive power management.
Solution Approach 2:
The power switch circuit automatically controls the power amplifier based on inputs from the phase lock oscillator and power supply status without requiring external control logic. The system self-regulates its power consumption by responding to its own operational states, eliminating the need for additional control mechanisms or external intervention.
3Device complexity
If conventional single-input power switches are used, then device simplicity is maintained, but control efficiency and adaptability are insufficient
Solution Approach 1:
The patent transitions from a single-input control mechanism to a dual-input control system, adding another dimension to the control space. By accepting two independent inputs (locking signal and power supply status), the switch can respond to multiple operational conditions simultaneously, greatly enhancing adaptability while maintaining relatively simple circuit implementation.
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
The solution provides a low-cost, high-performance power switch that reduces power consumption and enables fast switching in VSAT systems, improving operational efficiency and reducing power usage.
Implementation Method 1
The first transistor is a P-channel metal-oxide semiconductor field effect transistor, comprising a source node, a drain node, and a gate node
Implementation Method 2
The second transistor is a NPN bipolar transistor, comprising a collector node, an emitter node and a base node
Data Source
AI summary
The present invention relates to a satellite signal transmitter, and in particular, to a satellite signal transmitter with a dual-input DC power control switch.