RF Front-End Circuit Segmentation for 5G Signal Routing
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Solution Overview
Problem
The existing radio frequency front-end circuits in 5G mobile terminal devices suffer from complex structure and design, leading to high path loss and component loss, which complicates signal transmission and reception.
Innovation Solution
The implementation of a radio frequency front-end circuit that uses a double-pole double-throw switch connected to a gating switch, allowing flexible signal reception and transmission using any antenna, thereby reducing path loss and circuit design complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a three-pole three-throw switch is used in the radio frequency front-end circuit, then signal switching capability is improved, but circuit complexity and path loss increase
Solution Approach 1:
The patent divides the circuit into two independent switching stages: a first switching circuit for connecting antennas to intermediate circuits, and a second switching circuit for connecting intermediate circuits to radio frequency circuits. This segmentation allows each switch to have fewer poles and throws, reducing individual switch complexity while maintaining overall signal routing capability.
Solution Approach 2:
The patent introduces intermediate circuits as intermediary components between antennas and radio frequency circuits. These intermediate circuits serve as connection points that simplify the switching architecture by breaking down the complex direct switching requirement into simpler staged switching operations.
2Adaptability or versatility
If three-pole three-throw switches are used, then signal routing flexibility is improved, but component loss and path loss increase
Solution Approach 1:
By segmenting the signal path into two switching stages with intermediate circuits, the patent reduces the number of switch components in any single signal path. This segmentation minimizes the cumulative component loss that would occur in a single complex three-pole three-throw switch configuration.
3Area of stationary object
If long wiring layout is used for antenna connections, then circuit coverage is improved, but path loss increases
Solution Approach 1:
The patent segments the antenna connection architecture by introducing intermediate circuits that serve as local connection points. This segmentation allows wiring to be organized in shorter segments rather than requiring long direct connections from each antenna to all radio frequency circuits, thereby reducing overall path length and associated losses.
Data Source
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AI summary
This disclosure provides a radio frequency front-end circuit and a mobile terminal. The circuit includes: a gating switch, separately connected to a first antenna, a second antenna, and a radio frequency circuit module; and a double-pole double-throw switch, separately connected to the gating switch, a third antenna, a fourth antenna, and a first radio frequency circuit, where the radio frequency circuit module is connected to a first target antenna in the first antenna and the second antenna by using the gating switch, and receives and/or transmits a signal by using the first target antenna; or the radio frequency circuit module is connected to a second target antenna in the third antenna and the fourth antenna by using the gating switch and the double-pole double-throw switch, and receives and/or transmits a signal by using the second target antenna; and the first radio frequency circuit is connected to one of the third antenna and the fourth antenna by using the double-pole double-throw switch.