Multi-User Satellite Receiver Single-Chip Integration
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Solution Overview
Problem
Conventional Low Noise Block (LNB) converters for satellite TV systems are costly due to the use of discrete components, making it challenging to provide a low-cost solution for multi-user satellite signal reception in households where multiple TV appliances need to receive different channels simultaneously.
Innovation Solution
A multi-user satellite receiving system utilizing a single-chip integrated design with synthesizers, frequency multipliers, and amplifiers to generate and down-convert satellite signals, reducing the need for external discrete components and lowering the overall system cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If discrete components are used in conventional LNB design, then signal conversion and amplification functions are achieved, but manufacturing cost increases significantly
Solution Approach 1:
The patent integrates multiple discrete components including synthesizers, frequency multipliers, amplifiers, and signal processing circuits into a single integrated circuit chip. This merging of components directly reduces the quantity of discrete parts, simplifies assembly, and lowers manufacturing cost while maintaining the LNB's signal conversion and amplification functions.
Solution Approach 2:
The integrated circuit chip performs multiple functions simultaneously: signal amplification, frequency synthesis, frequency multiplication, and down-conversion. This multi-functionality eliminates the need for separate discrete components for each function, reducing both component quantity and manufacturing complexity.
2Adaptability or versatility
If multiple TV appliances need to receive different TV programs simultaneously, then multi-user reception capability is required, but conventional LNB cost becomes too high
Solution Approach 1:
The patent combines multiple output channels and signal processing paths into a single integrated circuit chip, enabling multi-user reception capability without requiring multiple separate LNB units. This integration maintains the ability to serve multiple TV appliances simultaneously while reducing the per-unit cost compared to conventional discrete component designs.
Solution Approach 2:
The integrated circuit chip provides universal functionality to support multiple users and multiple TV programs simultaneously through its built-in signal distribution and processing capabilities, eliminating the need for expensive conventional LNB designs while maintaining adaptability for multi-user reception.
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 single-chip solution enables efficient and cost-effective generation of multiple down-converted signals for multiple tuners, reducing the noise figure and improving signal integrity while minimizing component costs, thus addressing the high cost issue of conventional LNBs.
Implementation Method 1
a first synthesizer (118c) arranged to generate a first oscillating signal (Sosc1) having a first frequency (F1)
Implementation Method 2
a first frequency multiplier (118d) coupled to the first synthesizer (118c) for generating a second oscillating signal (Sosc2) having a second frequency (F2) according to the first oscillating signal (Sosc1)
Implementation Method 3
The single-chip (118) generates a first down-converted signal (Sdc1) according to a first satellite signal (Ss1) and the second oscillating signal (Sosc2)
Data Source
AI summary
An integrated multi-user satellite receiver includes: a single-chip, and the single-chip includes: a first synthesizer for generating a first oscillating signal having a first frequency; a first frequency multiplier for generating a second oscillating signal having a second frequency according to the first oscillating signal; a second synthesizer for generating a third oscillating signal having a third frequency; and a second frequency multiplier for generating a fourth oscillating signal having a fourth frequency according to the third oscillating signal; wherein the single-chip generates a first down-converted signal according to a first satellite signal and the second oscillating signal, generates a second down-converted signal according to the first satellite signal and the fourth oscillating signal, generates a third down-converted signal according to a second satellite signal and the second oscillating signal, and generates a fourth down-converted signal according to the second satellite signal and the fourth oscillating signal.