RF Front-End Module Eliminating Switch Signal Loss
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Solution Overview
Problem
Conventional RF front-end modules experience signal loss and reduced performance due to the presence of switch units in the signal transmission and reception paths, which degrade signal strength and sensitivity.
Innovation Solution
The RF front-end module eliminates the need for switch units between transmitting blocks and the transmitting/receiving terminal by using impedance units and switching units to directly connect transmitting blocks to the terminal, allowing signals to be sent without passing through switch units, thereby avoiding signal loss and maintaining high impedance in the transmission and reception paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If switch units are used to control transmitting/receiving operations, then the module can switch between different transmitting blocks and receiving paths, but signal loss occurs and signal strength is degraded
Solution Approach 1:
The patent removes the switch unit from the signal transmission path by using impedance units to control signal routing. The switch unit is extracted from the critical signal path and replaced with impedance-based control mechanisms that achieve the same functionality without signal loss.
Solution Approach 2:
The patent introduces impedance units as intermediary components between the transmitting blocks and the transmitting/receiving terminal. These impedance units serve as mediators that control signal flow without requiring physical switch units in the signal path, thereby eliminating signal loss while maintaining switching capability.
2Adaptability or versatility
If switch units are used in the receiving path, then the module can select different receiving paths, but signal sensitivity is degraded
Solution Approach 1:
The patent removes the switch unit from the receiving path by using impedance units to control signal routing. The switch unit is extracted from the critical signal path and replaced with impedance-based control mechanisms that achieve the same functionality without signal loss.
Solution Approach 2:
The patent introduces impedance units as intermediary components between the receiving paths and the transmitting/receiving terminal. These impedance units serve as mediators that control signal flow without requiring physical switch units in the signal path, thereby eliminating signal loss while maintaining path selection capability.
3Loss of energy
If impedance units are used to eliminate switch units from the signal path, then signal loss is reduced, but the device complexity increases due to additional impedance switching units
Solution Approach 1:
The patent makes the impedance unit serve multiple functions: it acts as both an impedance matching component and a switching control element. By combining these functions into a single component, the patent reduces the need for separate switch units while maintaining signal loss reduction benefits.
Solution Approach 2:
The patent merges the impedance unit and switching functionality into a single integrated component. The impedance switching unit combines impedance control and signal routing functions, reducing the overall number of discrete components needed in the system.
Data Source
AI summary
An RF front-end module includes a transmitting/receiving terminal, a control unit, a first transmitting block and a second transmitting block. The first transmitting block and the second transmitting block connect the transmitting/receiving terminal and the control unit. The control unit controls on or off status of the first transmitting block and the second transmitting block. Thus, the first transmitting block and the second transmitting block can send a signal to the transmitting/receiving terminal directly without pass through any switch unit, avoiding extra signal loss on switch unit.