Multichannel Signal Modulator for Satellite Uplink
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Solution Overview
Problem
Current satellite broadcast uplink facilities require multiple single-channel modulators, leading to high costs, complexity, and space consumption due to the need for numerous components and interconnections, which limits their commercial viability.
Innovation Solution
A multichannel signal modulator that uses a single digital circuit to process multiple source signals, incorporating modulation, upsampling, and frequency mixing to generate a multichannel signal at a selected bandwidth, reducing the number of required components and enhancing control over frequency synchronization and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple single-channel modulators are used to generate multiple carriers, then the required signal generation function is achieved, but the equipment complexity and cost increase significantly
Solution Approach 1:
The patent combines multiple single-channel modulator functions into a single multichannel signal modulator that can process multiple input signals simultaneously. The device integrates multiple modulation circuits, upsampling circuits, and frequency mixing circuits into one unified apparatus, eliminating the need for separate modulators for each carrier signal.
Solution Approach 2:
The multichannel signal modulator is designed to perform multiple functions: it can modulate multiple different input signals, upsample them to different rates, mix them to different frequencies, and output multiple carrier signals simultaneously. This single device replaces what would traditionally require multiple specialized components.
2Adaptability or versatility
If multiple single-channel modulators are used to generate multiple carriers, then the required signal generation function is achieved, but the space requirements increase significantly
Solution Approach 1:
The patent consolidates multiple modulator units into a single integrated multichannel modulator, dramatically reducing the physical footprint. By combining multiple modulation, upsampling, and frequency mixing functions into one device, the space required is reduced from what would be needed for multiple separate components to a single compact unit.
3Adaptability or versatility
If multiple single-channel modulators are used to generate multiple carriers, then the required signal generation function is achieved, but the interconnection complexity increases
Solution Approach 1:
The patent integrates multiple signal processing functions within a single device, eliminating the need for complex external interconnections between separate modulators. The internal architecture directly connects the modulation circuits, upsampling circuits, and frequency mixing circuits, simplifying the overall system interconnection structure.
4Adaptability or versatility
If conventional hardware approaches are used for multiple carrier signal creation, then the signal generation function is achieved, but the cost increases
Solution Approach 1:
The patent combines multiple expensive single-channel modulator units into a single multichannel modulator, reducing the total component count and associated costs. The integrated design eliminates redundant functionality across multiple devices and reduces the need for extensive interconnection hardware.
Solution Approach 2:
The multichannel signal modulator provides universal functionality to generate multiple carrier signals from a single device, replacing what would traditionally require multiple specialized components. This multi-functional approach reduces overall system cost by eliminating redundant features in separate devices.
Data Source
AI summary
A multichannel signal modulator for the generation of a multichannel signal for uplink to a broadcast satellite. Using a digital signal processing system to generate a multichannel signal from a plurality of source signals reduces substantially the quantity and complexity of a satellite uplink installation for use in such applications.