Shared RF Filter Topology for Wideband Transceiver Paths
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Solution Overview
Problem
Conventional electronic devices require multiple radio frequency filters to support various frequency bands, leading to increased space usage and inefficiency, especially with the adoption of wider communication frequency ranges like 5G networks, where quarter-wavelength signal paths are unsuitable.
Innovation Solution
The electronic device dynamically couples radio frequency filters to both the transmitter and receiver, allowing for sharing and combination of filters to enable transmission and reception across different frequency bands, reducing the number of filters needed and optimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radio frequency filters are added to support new frequency bands, then the electronic device can transmit and receive signals over more frequency bands, but the space occupied in the electronic device increases
Solution Approach 1:
The patent implements filter sharing between transmitter and receiver, allowing the same filter to serve multiple functions and frequency bands. The filter is dynamically coupled to different components based on operational mode, enabling a single filter to replace what would traditionally require multiple dedicated filters, thus reducing overall space while maintaining broad frequency band coverage
Solution Approach 2:
The patent employs dynamic coupling mechanisms where the filter can be selectively connected to different components (transmitter or receiver) based on the current operational requirements. This dynamic reconfiguration allows the same physical filter to adapt to different frequency bands and operational modes, maximizing its utility and reducing the total number of filters needed
2Reliability
If quarter-wavelength signal paths are used for narrow wavelength ranges, then the signal transmission is effective for specific frequencies, but the signal paths are unsuitable for wider bands of communication frequencies
Solution Approach 1:
The patent replaces fixed quarter-wavelength signal paths with dynamically reconfigurable filter-based signal paths. The filters can be adjusted and reconfigured to accommodate different frequency bands, allowing the system to maintain effective signal transmission across wide frequency ranges rather than being constrained to narrow bands by fixed physical path lengths
Solution Approach 2:
The patent changes the operational parameters of the filter system to support wideband communication. By using filters with adjustable characteristics and dynamic coupling, the system can adapt its frequency response parameters to match different communication standards and frequency bands, overcoming the limitations of fixed quarter-wavelength paths
3Adaptability or versatility
If multiple sets of radio frequency filters are included for different frequency bands, then the electronic device can support various frequency bands, but the device complexity increases
Solution Approach 1:
The patent makes the filter universal by enabling it to serve both transmitter and receiver functions, and to support multiple frequency bands through dynamic reconfiguration. This multi-functionality reduces the total number of filters from what would be required in a traditional dedicated approach, thereby simplifying the overall device architecture while maintaining comprehensive frequency band support
Solution Approach 2:
The patent merges the transmitter and receiver filter paths into a shared filter resource. By combining what would traditionally be separate filter sets into a single shared filter with dynamic coupling, the system reduces component count and complexity while achieving the same functional goals of supporting multiple frequency bands
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.