RF Module Layout With Conductive Shielding for TDD Reception
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Solution Overview
Problem
In 5th Generation New Radio (5GNR) communication systems using time division duplex (TDD) with wideband, existing RF modules face interference between simultaneous reception signals in the same communication band, leading to degraded reception sensitivity.
Innovation Solution
The RF module design includes a module substrate with filters and switches configured to manage communication bands, using conductive members to reduce electromagnetic coupling between low-noise amplifiers and filters, thereby suppressing interference and improving sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple reception signals are simultaneously received in the same TDD communication band, then the communication capacity is improved, but interference between reception signals occurs and reception sensitivity is degraded
Solution Approach 1:
The patent divides the reception path into separate processing channels for different component carriers. Each low-noise amplifier processes a specific reception signal independently, and conductive members are strategically arranged to electrically isolate adjacent amplifiers, preventing signal interference while maintaining simultaneous reception capability
Solution Approach 2:
Conductive members are introduced as intermediary elements between adjacent low-noise amplifiers and between amplifiers and filters. These conductive members act as shielding barriers that block electromagnetic coupling and interference between neighboring components, enabling simultaneous reception without degradation
2Reliability
If conductive members are arranged between adjacent low-noise amplifiers, then electromagnetic coupling is reduced and interference is suppressed, but device complexity increases
Solution Approach 1:
The conductive members are integrated into the existing module substrate structure, combining the shielding function with the mechanical support function. This merging approach adds interference suppression capability without requiring separate shielding structures, thereby limiting the increase in device complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively suppresses interference between simultaneous reception signals, enhancing the reception sensitivity of the RF module in TDD communication systems.
Implementation Method 1
using conductive members to reduce electromagnetic coupling between low-noise amplifiers and filters
Data Source
AI summary
A radio frequency (RF) module including a module substrate; a filter with a passband including communication band for TDD; a switch connected to the filter; a power amplifier that is arranged on a first surface of the module substrate and connected to the filter via the switch; a low-noise amplifier that is arranged on a second surface of the module substrate and connected to the filter via the switch; a filter with a passband including communication band; a low-noise amplifier that is arranged on the second surface and connected to the filter; and a conductive member arranged between the low-noise amplifiers on the second surface.