Distributed RF Architecture Reducing Cable Count and Noise
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Solution Overview
Problem
Conventional multi-service devices for receiving and transmitting radio frequency signals require multiple processing platforms and high-quality cables, leading to increased cost, complexity, and susceptibility to noise interference, which degrades signal integrity and sensitivity.
Innovation Solution
A distributed architecture system that combines RF signals into a multiplexed signal, allowing for remote processing and transmission using a single cable, thereby reducing the number of processing platforms and cables needed, and isolating RF front ends from noisy environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate processing platforms are used for different services, then each service can be processed independently with dedicated RF front ends, but the system complexity, cost, and number of cables increase significantly
Solution Approach 1:
The patent combines multiple RF front ends into a single integrated RF section that serves multiple services (AM/FM radio, satellite radio, cellular phone, GPS). This consolidation reduces the number of separate processing platforms while maintaining dedicated signal paths for each service through the shared RF section, thereby reducing system complexity without compromising signal integrity.
Solution Approach 2:
The RF section is designed as a multi-functional component that can handle multiple types of radio frequency signals simultaneously. It includes multiple antennas and RF input channels that can process different services through a single integrated platform, eliminating the need for separate dedicated RF front ends for each service.
2Reliability
If multiple high-quality cables are used to connect antennas to RF front ends, then signal integrity is maintained, but cost and weight increase
Solution Approach 1:
The patent consolidates multiple cable connections into a single cable assembly that carries multiple RF signals. The integrated RF section receives signals from multiple antennas through this single cable, eliminating the need for multiple separate high-quality cables while maintaining signal integrity through proper shielding and signal separation within the unified structure.
3Volume of stationary object
If RF front ends are placed in close proximity to other circuits in a single housing, then space is utilized efficiently, but electrical noise from other circuits degrades RF signal sensitivity
Solution Approach 1:
The patent extracts the RF section and its associated antennas from the main housing containing other electronic circuits. By providing a separate housing for the RF section, the design isolates sensitive RF signals from electrical noise generated by power supplies, digital signal processors, and other circuits in the main housing, thereby improving RF signal sensitivity while still allowing compact integration through remote mounting options.
4Volume of stationary object
If a single housing accommodates all processing platforms, then the device is compact, but adding enhanced features becomes more complex and space is limited
Solution Approach 1:
The patent segments the device into separate modular units: a main housing containing processing platforms and a separate RF section housing. This segmentation allows independent expansion and enhancement of either module without affecting the other. The RF section can be upgraded with new antenna types or frequency capabilities while the main housing can accommodate additional processing features, providing greater adaptability while maintaining compact overall dimensions.
Data Source
AI summary
A distributed architecture system for receiving radio frequency (RF) signals includes a receiving unit receiving a plurality of RF signals. The receiving unit includes means for combining the plurality of RF signals into a multiplexed signal. A head unit receives and separates the multiplexed signal into a plurality of information signals. The head unit prepares the information signals for presentation to a user. The head unit is disposed remotely from the receiving unit. A multiplexed link carries the multiplexed signal from the receiving unit to the head unit.