RF L-DRX Integration for Compact Switching and Reduced RF Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radio-frequency systems for 5G communication require multiple discrete switches, leading to high cost and large substrate area occupation, and suffer from signal interference and complex layout issues.
Innovation Solution
A radio-frequency L-DRX device integrating a switching unit, filtering unit, and low noise amplifier in a single chip, with a polling transmitting port, to facilitate transceiving control, reduce substrate area, and minimize signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple discrete switches are provided on receiving and transmitting paths, then switching between transmission and reception can be supported, but cost increases and substrate area occupation increases
Solution Approach 1:
The patent integrates multiple discrete switches into a single LDRX (Low-Noise Amplifier-Diversity Receiver eXternal) device that combines switching, filtering, and amplification functions. This merging reduces the number of separate components on the substrate, thereby reducing substrate area occupation while maintaining the capability to switch between transmission and reception paths.
Solution Approach 2:
The LDRX device performs multiple functions simultaneously: it acts as a switch for path selection, a filter for signal conditioning, and a low-noise amplifier for signal amplification. This multi-functionality eliminates the need for separate discrete switches, reducing both substrate area and component count while maintaining full switching capability between transmission and reception modes.
2Adaptability or versatility
If multiple discrete switches are provided on receiving and transmitting paths, then switching between transmission and reception can be supported, but cost increases
Solution Approach 1:
The patent combines multiple discrete components (switches, filters, amplifiers) into a single integrated LDRX device. This integration reduces the total component count that needs to be sourced, managed, and assembled, thereby reducing overall system cost despite maintaining full switching capability between transmission and reception paths.
Solution Approach 2:
The LDRX device provides multiple functions (switching, filtering, amplification) in a single component, eliminating the need to purchase and assemble multiple separate discrete switches and associated components. This multi-functionality reduces bill of materials cost and assembly complexity, directly addressing the cost increase issue.
3Adaptability or versatility
If discrete switches are used, then path switching can be achieved, but signal interference and complex layout issues occur
Solution Approach 1:
The patent integrates the switching function with filtering and amplification functions within a single LDRX device. This integration reduces the number of separate components and their interconnections on the substrate, simplifying the RF layout and reducing potential sources of signal interference that would arise from multiple discrete switches and their associated trace routing.
Data Source
AI summary
Provided is a radio-frequency L-DRX device having a receiving port (RXOUT) and a polling transmitting port (SRS) used for connection to a radio-frequency transceiver, and an antenna port (ANT) for connection to an antenna. The radio-frequency L-DRX device includes: a first switching unit connected to the antenna port (ANT) and the polling transmitting port (SRS) and configured to selectively switch on a receiving path where the receiving port (RXOUT) is located and a transmitting path where the polling transmitting port (SRS) is located; a first filtering unit disposed in the receiving path or the transmitting path and configured to perform filtering processing on a received or transmitted radio-frequency signal; and a first low noise amplifier disposed in the receiving path and having an output terminal connected to the receiving port (SRS), and configured to amplify the filtered radio-frequency signal to be outputted via the receiving port (SRS).