Antenna Module Interference Cancellation for Diversity Reception
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Solution Overview
Problem
The existing antenna modules face interference issues due to spatial coupling between the primary transceiving unit and the diversity receiving unit, leading to reduced receiving sensitivity and potential low-noise amplifier blockage, which compromises the performance of the diversity receiving unit.
Innovation Solution
Incorporating an interference cancellation unit with a signal output unit that transmits a cancellation signal to the diversity receiving unit to cancel the spatially-coupled interference signal, thereby reducing its impact on the low-noise amplifier and improving receiving sensitivity without affecting the antenna's frequency band range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the primary transceiving unit and diversity receiving unit work simultaneously, then the antenna module can provide both transceiving and diversity receiving functions, but the transmission signal from the primary transceiving unit enters the diversity receiving unit through spatial coupling, causing interference and reducing receiving sensitivity
Solution Approach 1:
The patent introduces a spatial coupling cancellation unit as an intermediary component between the primary transceiving unit and diversity receiving unit. This unit includes a cancellation signal generation submodule that generates cancellation signals based on the transmission signal, and a cancellation signal transmission submodule that transmits these signals to the diversity receiving unit. The cancellation signals act as mediators to counteract the harmful spatial coupling effects, allowing both transceiving and diversity receiving functions to operate simultaneously without degrading receiving sensitivity.
2Power
If the transmission signal power is increased to improve transceiving performance, then the transceiving capability is enhanced, but the spatially-coupled interference signal strength increases proportionally, leading to low-noise amplifier blockage in the diversity receiving unit
Solution Approach 1:
The patent implements preliminary anti-action by generating and transmitting cancellation signals before the harmful spatially-coupled interference signals affect the low-noise amplifier. The cancellation signal generation submodule creates signals that are opposite in phase to the expected interference signals, and the cancellation signal transmission submodule delivers these preemptively to the diversity receiving unit. This allows the system to increase transmission signal power for improved transceiving performance while the pre-applied cancellation signals neutralize the resulting interference before it can block the low-noise amplifier.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The cancellation unit effectively reduces the influence of spatially-coupled interference, enhancing the receiving sensitivity of the diversity receiving unit while maintaining the antenna's broadband capabilities.
Implementation Method 1
the cancellation signal is configured to cancel a spatially-coupled interference signal received by the second antenna
Data Source
AI summary
An antenna module includes: a primary transceiving unit, wherein the primary transceiving unit includes a first antenna; a diversity receiving unit, wherein the diversity receiving unit includes a second antenna; and an interference cancellation unit, wherein the interference cancellation unit includes a signal output unit, the signal output unit is configured to transmit a cancellation signal to the second antenna, the cancellation signal is configured to cancel a spatially-coupled interference signal received by the second antenna, and the spatially-coupled interference signal is a transmission signal entering the second antenna from the first antenna through spatial coupling.