Bias Current Control in Dual-Polarization Beam Formers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless communication systems using phased array antenna panels face high power consumption even when the gain is low, which is undesirable for efficient beam steering and multi-beam systems.
Innovation Solution
The implementation of bias current control in vertical and horizontal channels of phased array antenna panels, allowing for independent gain control and reduced power consumption, is achieved through dual-polarization beam former circuits and integrated circuits that adjust bias current based on needed output power, enabling efficient polarization rotation with lower power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If passive attenuators or constant power consumption active variable gain amplifiers are used, then gain control is achieved, but power consumption remains high even when gain is low
Solution Approach 1:
The patent implements dynamic bias current control in the power amplifier circuits, allowing the bias current to be adjusted according to the required gain level. This dynamic adjustment enables the system to reduce power consumption when low gain is sufficient, while maintaining the ability to provide high gain when needed, thereby resolving the contradiction between power consumption and gain control efficiency
Solution Approach 2:
The patent changes the operational parameters of the power amplifier by introducing variable bias current control. By modifying the bias current parameter based on the required output power level, the system achieves both power savings at low gain and adequate performance at high gain, effectively resolving the technical contradiction
2Use of energy by stationary object
If bias current control is implemented in vertical or horizontal channels, then power consumption is reduced, but system complexity increases
Solution Approach 1:
The patent applies bias current control separately to vertical and horizontal channels independently. This segmentation allows each polarization channel to be optimized individually, reducing overall power consumption while keeping the control architecture manageable through modular implementation
Solution Approach 2:
The bias current control mechanism is designed to serve multiple functions: it provides power savings, enables polarization rotation control, and supports beam forming operations. This multi-functionality reduces the need for separate control circuits, thereby limiting the increase in system complexity
Data Source
AI summary
An apparatus includes a phased array antenna panel and one or more dual-polarization beam former circuits mounted on the phased array antenna panel. The phased array antenna panel generally comprises a plurality of dual-polarization antenna elements. The plurality of dual-polarization antenna elements are generally arranged in one or more groups. Each dual-polarization beam former circuit may be coupled to a respective group of the dual-polarization antenna elements. Each dual-polarization beam former circuit generally comprises a plurality of transceiver channels. Each transceiver channel generally comprises a horizontal channel and a vertical channel. Each dual-polarization beam former circuit provides polarization rotation through bias current control in each of the vertical and horizontal channels.