Patent
System for Cancelling Noise in a Low Noise Amplifier (LNA) Circuit and a Method thereof
Abstract
This invention addresses noise cancellation in Low Noise Amplifier (LNA) circuits, commonly used in communication systems. It introduces a feedback component in the circuit to cancel out noise produced by transistors. By configuring transistors in parallel stages and introducing feedback, the system effectively cancels both the first and second noise components, resulting in cleaner, clearer signal output. This technology enhances the performance of LNAs, ensuring better signal quality in communication devices like cell phones and Wi-Fi routers.
Uniqueness of the Solution
- Noise Cancellation System: Integrated mechanism to cancel noise in Low Noise Amplifier (LNA) circuits reducing the need for separate circuits.
- Design Flexibility: Designers can now balance trade-offs such as gain, noise figure, power consumption, and bandwidth more effectively in LNA design procedures.
- Improved Receiver Performance: The resistive feedback introduced in the LNA circuit cancels noise produced by transistors, leading to cleaner signal output.
- Wideband Compatibility: The system supports wideband single-ended input and differential output LNAs, the configuration widely used in any receiver chain as the antenna which normally feeds the LNA is of single ended output and the blocks after LNA prefers differential input, enhancing compatibility across different communication standards and frequency bands.
- Simplified Front-End Design: Designing multi-standard receivers is made easier as the system offers a unified solution for noise cancellation in LNAs, streamlining the front-end design process.
- Noise Tackling at the Source: This innovation tackles noise right where it starts within the LNA circuit—resulting in clearer signals compared to traditional methods.
- Noise Cancellation System: Integrated mechanism to cancel noise in Low Noise Amplifier (LNA) circuits reducing the need for separate circuits.
- Design Flexibility: Designers can now balance trade-offs such as gain, noise figure, power consumption, and bandwidth more effectively in LNA design procedures.
- Improved Receiver Performance: The resistive feedback introduced in the LNA circuit cancels noise produced by transistors, leading to cleaner signal output.
- Wideband Compatibility: The system supports wideband single-ended input and differential output LNAs, the configuration widely used in any receiver chain as the antenna which normally feeds the LNA is of single ended output and the blocks after LNA prefers differential input, enhancing compatibility across different communication standards and frequency bands.
- Simplified Front-End Design: Designing multi-standard receivers is made easier as the system offers a unified solution for noise cancellation in LNAs, streamlining the front-end design process.
- Noise Tackling at the Source: This innovation tackles noise right where it starts within the LNA circuit—resulting in clearer signals compared to traditional methods.
Current Status of Technology
- Prototype Development: The technology has advanced at the design stage, successfully integrating LNA and BALUN functionality into a single circuit to address noise cancellation.
- Performance Metrics: The proposed LNA structures achieve a notable reduction in noise figure, offering improved signal quality in multi-standard receiver applications.
- Key Specifications: The proposed novel LNA circuits feature a single-ended input and differential output, utilizing capacitors for DC blocking and incorporating resistive feedback paths for noise cancellation.
- Operational Characteristics: The system operates with a common gate (CG) stage and a common source (CS) stage in parallel, leveraging feedback components to cancel noise effectively from both stages.
Technology readiness level
3
Societal Impact
This technology can enhance signal reception in wireless devices, provide clearer communication, ensure uninterrupted connectivity benefitting every mobile user.
Relevant Industries, Domains and Applications
Electronics, audio technology, telecommunication, Qualcomm, Broadcom.
Applications or Domain
- Can be used in wideband wireless receiver front end especially in cellphones.
- Application in telecommunication systems, as it improves signal clarity and reliability like Wi-Fi routers, satellite receivers, IoT devices.
- Manufacturers of electronic components and integrated circuits can incorporate this technology into their products like Qualcomm, Broadcom, Maxlinear, Texas Instruments.
Application Number
201721005711
Filing Date
Grant Number
448318
Grant Date
Assignee(s)
Indian Institute of Technology Bombay