Receiver Front End Module Signal Isolation
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Solution Overview
Problem
Current receiver configurations require multiple front end modules and separate boards for tuner modules and power supply, leading to a complex setup and interference issues between television tuners, particularly with disturbance waves affecting analog broadcasting.
Innovation Solution
A single front end module configuration with strategically placed reception units and splitter units to receive and process both analog and digital broadcast signals without interference, using frequency conversion and demodulation to manage signal isolation and reduce disturbance waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple front end modules and separate boards for tuner modules and power supply are provided, then the receiver can receive analog and digital broadcast signals, but the configuration becomes complicated and space for assembling parts is restricted
Solution Approach 1:
The patent combines multiple front end modules into a single integrated front end module that can handle both analog and digital broadcast signals. The tuner modules and power supply circuits are integrated onto the same board, reducing the number of separate components and simplifying the overall configuration while maintaining the ability to receive multiple signal types.
Solution Approach 2:
The front end module is designed with multi-functionality to handle both analog and digital broadcast signals through a single unified structure. The module can selectively process different signal types without requiring separate dedicated modules for each function, thereby reducing complexity while preserving versatility.
2Adaptability or versatility
If multiple television tuners are included, then the receiver can receive multiple channels, but obstruction among television tuners occurs and disturbance waves affect analog broadcasting
Solution Approach 1:
The patent introduces isolation amplifiers as intermediary devices between the tuners and the signal processing circuits. These isolation amplifiers act as mediators that prevent disturbance waves and mutual interference between multiple tuners while allowing each tuner to independently receive its assigned channel, thus enabling multi-channel reception without harmful interactions.
Solution Approach 2:
The signal processing path is segmented into isolated sections for each tuner, with individual isolation amplifiers separating the tuner outputs. This segmentation prevents the disturbance waves from one tuner from affecting other tuners, allowing multiple channels to be received simultaneously without mutual obstruction.
Data Source
AI summary
The present invention relates to a receiver capable of reducing influence of disturbance waves and capable of receiving analog and digital broadcast signals without interference with a single front end module, without leading to complexity of the configuration.A receiver 10 includes, on a module board 11, a first terrestrial wave tuner 16 and second terrestrial wave tuner 17 which receive broadcast signals of a first frequency band, and a first satellite wave tuner 14 which receives broadcast signals of a second frequency band different from the first frequency band, with the first satellite wave tuner 14 being situated between the first terrestrial wave tuner 16 and the second terrestrial wave tuner 17. The present invention can be applied to receivers receiving broadcast signals of different frequency bands, for example.