RFIC Attenuator Design for 5G Power Amplifier Linearity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G wireless communication systems, there is a challenge in maintaining optimal linearity and spatial efficiency in power amplifier designs, particularly in the RFIC, due to the need for multiple gain modes and reducing path loss in the mmWave band, which is exacerbated by the complexity of embedding inductors for parasitic capacitance adjustment.
Innovation Solution
The method involves determining content storage in terminals based on location information, forming D2D communication links between terminals in overload cells to offload data, and using processors in base stations and terminals to manage content transmission efficiently, thereby reducing the load on the power amplifier and improving signal linearity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If inductors are used to adjust loss due to parasitic capacitance in the minimum attenuation mode, then optimal linearity is achieved, but spatial efficiency deteriorates due to large space requirements
Solution Approach 1:
The patent extracts and removes the inductor component from the attenuator design. Instead of using an inductor to adjust for parasitic capacitance, the patent employs a capacitor-based attenuation mechanism that eliminates the need for large inductor components, thereby maintaining optimal linearity while significantly improving spatial efficiency in the RFIC layout.
Solution Approach 2:
The patent changes the fundamental parameter approach by switching from inductance-based loss adjustment to capacitance-based attenuation. This parameter change allows the system to achieve the required loss adjustment function without the spatial overhead of inductors, resolving the contradiction between linearity optimization and spatial efficiency.
2Adaptability or versatility
If multiple gain modes are embedded in the power amplifier to secure dynamic range, then adaptability is improved, but device complexity increases due to design difficulties in maintaining optimal linearity in each mode
Solution Approach 1:
The patent implements a universal attenuator design that functions effectively across multiple gain modes without requiring mode-specific optimization. The capacitor-based attenuation mechanism provides consistent performance across different operating conditions, allowing the power amplifier to maintain optimal linearity in each gain mode while using the same simplified attenuator structure, thereby reducing overall design complexity.
Solution Approach 2:
The patent employs dynamic attenuation control that adapts to different gain modes automatically. The attenuator dynamically adjusts its operation based on the active gain mode, maintaining optimal linearity across the full dynamic range without requiring complex static design optimizations for each individual mode.
3Length of stationary object
If beamforming and massive MIMO technologies are used to reduce path loss in mmWave band, then propagation distance is improved, but device complexity increases due to the need for multiple antenna elements and signal processing
Solution Approach 1:
The patent extracts and eliminates the inductor component from the RFIC attenuator design, reducing the overall component count and complexity in the power amplifier chain. This simplification is particularly beneficial in mmWave systems where every component contributes to system complexity, while still achieving the required signal control functions for beamforming and massive MIMO operations.
Data Source
AI summary
This disclosure relates to the 5th generation (5G) or pre-5G communication system for supporting a higher data rate after the 4th generation (4G) communication system such as Long Term Evolution (LTE). The method for operating the core network in a wireless communication system according to this disclosure comprises the processes of determining the content to store in the terminal based on the location information of the terminal, transmitting the content transmission command to the base station so as to transmit the content to the terminal in response to the determination, checking whether the terminal has entered the overload cell, and forming a D2D communication link between the terminal and another adjacent terminal when it is identified that the terminal has entered the overload cell.