Multi-Band RF Receiver Circuit With Selective Single-Band Extraction
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently processing multi-band millimeter-wave signals due to fragmented carrier frequency band allocations, which require complex and costly receiver designs that are often lossy and power-consuming.
Innovation Solution
A receiver system that includes a transconductance amplifier and multiple single-band circuits, where the transconductance amplifier generates an amplified wide-band signal and selects a single-band circuit based on activated transistors to extract specific frequency bands, downconverting them to a common intermediate frequency for processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate receiver circuits are used to process different frequency bands, then each band can be processed independently, but the device complexity and power consumption increase significantly
Solution Approach 1:
The patent combines multiple frequency band processing circuits into a single integrated receiver circuit that can selectively process different bands. The receiver includes a single amplifier, mixer, and local oscillator that can be configured to handle multiple bands through selective switching and filtering, rather than requiring separate complete receiver chains for each band.
Solution Approach 2:
The receiver circuit is designed with multi-functional components that can operate across multiple frequency bands. The amplifier, mixer, and local oscillator are configured to process different bands by receiving control signals that adjust their operating parameters, allowing one circuit to perform the functions previously requiring multiple dedicated circuits.
2Reliability
If multiple separate receiver circuits are used to process different frequency bands, then each band can be processed independently, but power consumption increases
Solution Approach 1:
The patent combines multiple frequency band processing circuits into a single integrated receiver circuit that can selectively process different bands. The receiver includes a single amplifier, mixer, and local oscillator that can be configured to handle multiple bands through selective switching and filtering, rather than requiring separate complete receiver chains for each band.
Solution Approach 2:
The receiver employs selective switching between different frequency band configurations based on which band is currently being received. The circuit activates only the necessary components for the current band operation, allowing idle components to remain inactive and consume minimal power, rather than continuously powering all band-processing components.
3Adaptability or versatility
If a wide-band amplifier is used to amplify all frequency bands simultaneously, then all bands can be processed, but signal quality degrades due to interference and loss
Solution Approach 1:
The patent segments the frequency spectrum into distinct bands and processes each band separately within the unified receiver circuit. Frequency selection circuits and filters divide the wide-band input signal into individual band components, which are then processed through the amplifier and mixer in sequence or parallel, preventing interference between bands while maintaining processing capability for all bands.
Solution Approach 2:
The patent introduces frequency selection circuits and filters as intermediary components between the antenna input and the amplifier. These intermediaries selectively pass only the desired frequency band to the amplification stage, preventing other bands from causing interference or loss, while still allowing the receiver to adapt to different bands by changing which intermediary is active.
Data Source
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AI summary
Devices and techniques are described to extract specific frequency band signals from a wide-band radio-frequency signal. A network entity may include an antenna for receiving the wide-band radio-frequency signal and may include a receiver circuit for processing the wide-band radio-frequency signal. The receiver circuit may include a transconductance amplifier and a plurality of single-band circuits. The transconductance amplifier may be configured to generate an amplified wide-band radio-frequency signal and send it to one or more of the single-band circuits. Each single-band circuit may be configured to extract a different frequency band signal from the amplified wide-band radio-frequency signal.