Broadband Re-configurable RF Receiver for Multi-Standard Wireless Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radio frequency receivers are typically specific to each wireless technology, leading to complex and heavy user equipment with interference issues, as they are not re-configurable to operate across a broad frequency range and input power dynamic range, which is essential for efficient radio spectrum utilization in cognitive radio systems.
Innovation Solution
A re-configurable broadband RF receiver system utilizing multiple quadrature demodulators, a broadband local oscillator with multiple frequency selection paths, digital variable attenuators, and a microcontroller for re-configuring operating frequency and input power, along with automatic gain control and power detection sections to support a wide frequency range (400 MHz to 6000 MHz) and input power range (−80 dBm to +0 dBm).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple specific receivers are used to support multiple radio access technologies, then the ability to access multiple wireless technologies is improved, but the device complexity and weight increase
Solution Approach 1:
The patent implements a universal receiver architecture that can operate across multiple radio access technologies by making the receiver broadband and re-configurable. The receiver uses a single wideband LNA, switchable filter bank, and re-configurable mixer chain to handle multiple wireless standards (GSM, UMTS, LTE, Wi-Fi, etc.) instead of requiring separate dedicated receivers for each technology, thereby reducing device complexity while maintaining multi-technology support capability
Solution Approach 2:
The receiver employs dynamic re-configuration capabilities through programmable filter banks, re-configurable mixer local oscillators, and software-controlled gain stages. This allows the receiver to adapt its frequency response, conversion frequencies, and signal processing parameters dynamically based on the specific wireless technology being accessed, enabling a single receiver to perform multiple functions across different standards
2Adaptability or versatility
If multiple specific receivers are used to support multiple radio access technologies, then the ability to access multiple wireless technologies is improved, but the device weight increases
Solution Approach 1:
The patent implements a universal receiver architecture that can operate across multiple radio access technologies by making the receiver broadband and re-configurable. The receiver uses a single wideband LNA, switchable filter bank, and re-configurable mixer chain to handle multiple wireless standards (GSM, UMTS, LTE, Wi-Fi, etc.) instead of requiring separate dedicated receivers for each technology, thereby reducing device complexity while maintaining multi-technology support capability
Solution Approach 2:
The patent combines multiple receiver functions into a single integrated broadband receiver unit. By merging the LNA, filter bank, mixer chains, and signal processing paths into one re-configurable system rather than using separate physical receivers for each technology, the overall device weight is reduced while maintaining the ability to access multiple wireless technologies
3Adaptability or versatility
If a broadband re-configurable receiver is implemented, then the frequency range and input power range are improved, but the device complexity increases
Solution Approach 1:
The patent segments the broadband receiver into modular functional blocks: a wideband LNA stage, switchable filter banks for different frequency bands, re-configurable mixer chains with programmable local oscillators, and digital signal processing stages. This segmentation allows each module to be optimized independently while maintaining overall broadband capability, making the complexity manageable through modular design rather than a monolithic complex system
Solution Approach 2:
The receiver employs dynamic re-configuration capabilities through programmable filter banks, re-configurable mixer local oscillators, and software-controlled gain stages. This allows the receiver to adapt its frequency response, conversion frequencies, and signal processing parameters dynamically based on the specific wireless technology being accessed, enabling a single receiver to perform multiple functions across different standards
Data Source
AI summary
An RF receiver system operating on a broader frequency range and wide input dynamic power range is described. Received RF signal is downconverted to baseband signal using multiple quadrature demodulators. A microcontroller system controls the RF receiver by selecting frequency range to be produced by the frequency synthesizer, selecting appropriate amplification path for producing the required output power, controlling the power module for checking for automatic power gain and automatic gain control.