Multi-Band RF Circuit Switching to Cut Chip Size and Loss
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Solution Overview
Problem
The increasing number of frequency bands required for RFICs in modern electronic devices leads to larger chip sizes and circuit losses, reducing operating efficiency.
Innovation Solution
An electronic circuit that includes a first inductor connected to an input terminal, a second and third inductor connected in series and parallel with the first inductor, a switch between the second and third inductor, and a processor to control the switch for transmitting or receiving signals in different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple transceivers are included in RFIC to support different frequency bands, then communication capability in multiple frequency bands is improved, but chip size increases and circuit loss occurs
Solution Approach 1:
The patent combines multiple transceiver functions into a single transceiver by integrating a switching circuit that can dynamically configure the RF circuit for different frequency bands. This merging approach allows one transceiver to perform the work of multiple transceivers, thereby reducing chip size while maintaining multi-band communication capability.
Solution Approach 2:
The patent employs dynamic switching of circuit configurations within the transceiver. The switching circuit can reconfigure the RF circuit between different frequency band modes (first frequency band and second frequency band) based on communication requirements. This dynamic adaptability enables a single transceiver to support multiple frequency bands without requiring separate dedicated transceivers for each band.
2Adaptability or versatility
If multiple transceivers are included in RFIC to support different frequency bands, then communication capability in multiple frequency bands is improved, but circuit loss increases and operating efficiency decreases
Solution Approach 1:
By merging multiple transceiver functions into a single transceiver with a reconfigurable RF circuit, the patent eliminates redundant circuitry that would otherwise be present in multiple separate transceivers. This reduction in total circuit components directly decreases circuit loss and improves operating efficiency while maintaining the ability to communicate across multiple frequency bands.
Solution Approach 2:
The patent creates a universal transceiver that can function across multiple frequency bands through dynamic reconfiguration. The single transceiver is designed to be multi-functional, capable of operating in both the first frequency band and the second frequency band by switching its internal circuit configuration, thereby avoiding the energy losses associated with having multiple specialized transceivers.
3Area of stationary object
If a single transceiver is used with switching circuit to support multiple frequency bands, then chip size is reduced, but circuit complexity increases
Solution Approach 1:
The patent segments the RF circuit into distinct functional blocks that can be independently configured and switched. By dividing the circuit into manageable segments (such as separate paths for first and second frequency bands with switching elements), the complexity is organized and controlled, making the single transceiver design more manageable despite its multi-functional requirements.
Data Source
AI summary
An electronic circuit includes a first inductor connected to an input terminal, a second inductor and a third inductor connected in series to each other and connected in parallel with the first inductor, a first switch connected between the second inductor and the third inductor, and a processor electrically connected to the first switch. The processor may be configured to close the first switch in response to a first request such that a first signal in a first frequency band is output through an output side of the electronic circuit, and to open the first switch in response to a second request, distinct from the first request, such that a second signal in a second frequency band, lower than the first frequency band, is output through the output side.