RF Transceiving Control Branches for High-Isolation Integration
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Solution Overview
Problem
Current radio-frequency circuit technologies face challenges in achieving high integration due to the complexity and space requirements of signal transceiving control structures, which necessitate numerous control signals and switches, hindering miniaturization and component integration.
Innovation Solution
A signal transceiving control structure with N control branches, including output, input, and auxiliary switches, connected to a power amplifier and filters or duplexers, allows for selective control of signal transmission, reception, and isolation between branches using fewer switches, reducing circuit complexity and size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If parallel shunt switches are added to improve isolation between ports, then isolation performance is improved, but the number of control signals and switches increases, leading to increased device complexity
Solution Approach 1:
The patent applies universality by designing a control branch that can be shared across multiple transmitting and receiving signal paths. Instead of having separate control switches for each TX and RX path, a single control branch with three switches (first, second, and third switches) can control multiple signal paths simultaneously. This multi-functional approach reduces the total number of switches and control signals while maintaining the required isolation performance between different ports.
Solution Approach 2:
The patent merges the control functions of multiple switches into a single integrated control branch. By combining the control of TX1, RX1, TX2, and RX2 paths into one control branch with coordinated switches, the design reduces component count and complexity. The three switches in the control branch work together to manage multiple signal paths, effectively merging what would otherwise require separate control mechanisms.
2Adaptability or versatility
If multiple control switches are added to control transmission and reception in different branches, then signal control capability is improved, but chip area occupied increases, hindering high integration
Solution Approach 1:
The control branch is designed as a universal module that can control multiple signal paths (TX1, RX1, TX2, RX2) using only three switches. This multi-functional design allows the same control branch structure to be reused across different signal paths, significantly reducing the total switch count and associated chip area compared to having dedicated switches for each path.
Solution Approach 2:
The patent segments the signal control function into a modular control branch that can be independently configured. By dividing the control function into discrete switch elements (first, second, and third switches) within a unified control branch, the design achieves flexible signal control while minimizing the physical footprint through efficient spatial arrangement and shared control logic.
3Adaptability or versatility
If the number of control branches is increased to support more network types, then adaptability to different network types is improved, but the number of required switches and control signals increases proportionally
Solution Approach 1:
The control branch is designed as a universal module that can be configured to support multiple network types (GSM, WCDMA, TD-SCDMA, etc.) without requiring separate control paths for each network type. The same three-switch control branch structure can be adapted to control different signal paths depending on the active network type, reducing the need to multiply switches and control signals with each additional network type supported.
Data Source
AI summary
A signal transceiving control structure includes a power amplifier and N control branches. The N control branches are configured to control transmission of first signals or receiving of second signals of different network standards according to different control instructions. First ends of the N control branches are respectively connected to an output end of the power amplifier, second ends of the N control branches are respectively connected to N external output ends, third ends of the N control branches are respectively connected to N external input/output ends, wherein N is a positive integer greater than 1. The power amplifier is configured to perform power amplification on the first signals.