Shared RF Filter Switching for Wideband Transceiver Circuits
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Solution Overview
Problem
Conventional electronic devices require multiple radio frequency filters for different frequency bands, occupying valuable space and being unsuitable for wide communication frequencies like 5G networks, which use frequencies spanning a large band.
Innovation Solution
Electronic devices dynamically couple an antenna to a transmitter and receiver, sharing radio frequency filters to enable transmission and reception of different frequency bands, reducing the number of filters needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radio frequency filters are added to support new frequency bands, then the frequency band coverage is improved, but the device space consumption increases
Solution Approach 1:
The patent makes a single radio frequency filter perform multiple functions by enabling it to operate across multiple frequency bands through dynamic reconfiguration. The filter is designed with adjustable parameters that allow it to adapt to different frequency requirements, eliminating the need for separate filters for each band and thus reducing device space while maintaining broad frequency coverage
Solution Approach 2:
The patent employs dynamic reconfiguration of the radio frequency filter parameters in real-time based on the required frequency band. By making the filter characteristics adjustable and changeable during operation, a single filter can dynamically adapt to serve multiple frequency bands, thereby reducing the total number of filters needed in the device
2Reliability
If quarter-wavelength signal paths are used, then the transmission performance for narrow wavelength ranges is improved, but the suitability for wide communication frequencies deteriorates
Solution Approach 1:
The patent changes the parameters of the signal path length dynamically based on the operating frequency band. Instead of using a fixed quarter-wavelength path optimized for narrow bands, the system adjusts the effective electrical length of the signal path to match the requirements of wide frequency bands, thereby maintaining transmission performance across a broad frequency range
Solution Approach 2:
The patent introduces dynamic adjustability to the signal path configuration, allowing the electrical length to be reconfigured based on the active frequency band. This dynamic adaptation enables the same physical path to serve multiple frequency ranges effectively, overcoming the limitation of fixed quarter-wavelength designs
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 allows for a smaller electronic device design and enables additional components by sharing filters between transmission and reception, effectively handling wide frequency bands like 5G.
Implementation Method 1
multiple radio frequency filters, each of which may filter different frequency bands or ranges
Data Source
AI summary
The present disclosure relates to systems and methods for operating transceiver circuitry to transmit or receive signals on various frequency ranges. To do so, a transmitter or a receiver of the transceiver circuitry is selectively coupled to or uncoupled from an antenna of the transceiver circuitry. Additionally, radio frequency filters may be individually or collectively coupled to and/or uncoupled from the antenna to filter different frequencies in the transmitting or receiving signals.