Multi-Band Feedback Circuit Using Time-Division Signal Processing
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Solution Overview
Problem
Current multi-frequency band communication systems face challenges with high volume, power consumption, and cost due to the integration of multiple radio frequency transceiver channels in a single package or IC, and the requirement for high bandwidth in feedback channels.
Innovation Solution
A transmitter feedback device and method that utilize a multi-channel frequency selection band-pass circuit, feedback local oscillator, mixer, and analog digital converter to process multi-frequency band signals in a time-division manner, reducing the need for multiple channels and improving signal isolation and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple radio frequency transceiver channels are integrated in one package or IC using highly integrated semiconductor process, then the isolation degree and performance of radio frequency signals of different frequency bands can be improved, but the volume, power consumption, and cost increase significantly
Solution Approach 1:
The patent merges multiple radio frequency transceiver channels into a single package or IC chip, integrating multiple discrete components into one unified structure. This combining approach maintains the isolation performance of multiple channels while reducing the overall volume by eliminating the need for separate packages for each channel.
Solution Approach 2:
The integrated package or IC chip serves multiple functions by accommodating multiple radio frequency transceiver channels within a single structure. This multi-functional design allows the same physical platform to handle different frequency bands and signal types, reducing the total number of components needed.
2Reliability
If multiple sets of discrete components are used to constitute multiple radio frequency channels, then the isolation degree and performance of different frequency bands can be improved, but the volume, power consumption, and cost increase
Solution Approach 1:
The patent combines multiple discrete components into a single integrated package or IC, reducing the total number of separate parts. This merging reduces power consumption by minimizing inter-component signal transmission losses and reducing the overall circuit complexity, while maintaining the isolation performance through careful internal design.
3Device complexity
If multiple radio frequency transceiver channels are integrated in one package or IC, then the device complexity is reduced, but the isolation degree and performance may not satisfy protocol requirements
Solution Approach 1:
The patent integrates multiple radio frequency transceiver channels into one package or IC, simplifying the device structure by reducing the number of separate components and interconnections. This merging reduces device complexity while maintaining isolation performance through optimized internal layout and shielding design.
Solution Approach 2:
The patent employs intermediary structures such as shielding layers, isolation walls, or filtering elements within the integrated package to maintain signal isolation between different frequency bands. These intermediary components mediate between the closely spaced transceiver channels, preventing interference while allowing the compact integrated design.
4Adaptability or versatility
If a multi-frequency band transceiver processes multiple frequency bands simultaneously, then the adaptability and versatility are improved, but the bandwidth requirements for feedback channels increase
Solution Approach 1:
The patent segments the feedback channel processing by separating different frequency band feedback signals into distinct processing paths or time slots. This segmentation allows the system to handle multiple frequency bands adaptively while managing feedback bandwidth requirements through structured organization of signal processing resources.
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
This approach reduces the volume, power consumption, and cost of the apparatus while maintaining effective signal processing and isolation across multiple frequency bands, and addresses the high bandwidth requirements of feedback channels.
Implementation Method 1
a multi-channel frequency selection band-pass circuit, configured to receive a multi-frequency band feedback signal and output a feedback signal of each frequency band in a time-division manner
Implementation Method 2
a mixer, configured to mix the feedback signal of each frequency band from the multi-channel frequency selection band-pass circuit and the feedback local oscillation corresponding to each frequency band from the feedback local oscillator, and output an intermediate frequency signal
Data Source
AI summary
The present invention provides a receiver, a transmitter, a transmitter feedback device, and corresponding methods. The feedback device includes: a multi-channel frequency selection band-pass circuit, configured to receive a multi-frequency band feedback signal, and output a feedback signal of each frequency band in a time-division manner; a feedback local oscillator, configured to provide feedback local oscillation corresponding to each frequency band in a time-division manner; a mixer, configured to mix the feedback signal of each frequency band from the multi-channel frequency selection band-pass circuit and the feedback local oscillation corresponding to each frequency band from the feedback local oscillator, and output an intermediate frequency signal of each frequency band in a time-division manner. A solution in which only one set of signal processing channels is used to process the signals of multiple frequency bands in the uplink, the downlink or both the uplink and downlink is provided.