Active Phased Array Layout for Multi-Beam Polarization Agility
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Solution Overview
Problem
Conventional phased array antennas are limited by high costs, complexity, and size due to the use of expensive analog RF components, particularly phase shifters and hybrids, which are frequency-sensitive and result in significant RF losses, making them unsuitable for commercial applications, especially in mobile and satellite communication systems that require polarization agility and multi-beam capabilities.
Innovation Solution
An active phased array architecture replaces traditional distributed components with monolithic active vector generators, power splitters, and RF hybrids, allowing for independent polarization control and beam steering across multiple frequency bands, reducing physical size and RF losses, and enabling reconfigurability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional phased array antennas use traditional distributed analog RF components (phase shifters and hybrids), then beam steering and polarization control functions are achieved, but the system suffers from high cost, high complexity, large size, and significant RF losses
Solution Approach 1:
The patent combines multiple distributed analog RF components (phase shifters, hybrids, power splitters) into integrated monolithic active vector generators. This merging eliminates the need for separate phase shifters and hybrids at each antenna element, reducing RF losses by removing multiple connection points and distributed components, while also reducing overall system complexity through integration.
Solution Approach 2:
The patent replaces traditional passive mechanical/distributed RF components with active monolithic integrated circuit implementations. The active vector generators use electronic control signals to achieve phase and amplitude modulation, substituting the mechanical/distributed analog component approach with a compact electronic system that reduces RF losses and simplifies the architecture.
2Adaptability or versatility
If conventional phased array antennas use frequency-sensitive analog RF components, then beam steering is achieved, but the system becomes unsuitable for multi-frequency band operations
Solution Approach 1:
The monolithic active vector generators are designed to operate across multiple frequency bands, providing universal functionality that replaces multiple frequency-specific component sets. The integrated architecture enables the same physical components to reliably perform beam steering and polarization control across different frequency ranges, making the system adaptable to multi-band operations without requiring frequency-sensitive distributed components.
3Area of stationary object
If conventional phased array antennas use distributed analog RF components at each element, then polarization control is achieved, but the system size and cost increase significantly
Solution Approach 1:
The patent merges multiple distributed components (phase shifters, hybrids, power amplifiers) into single monolithic integrated vector generators at each antenna element. This consolidation dramatically reduces the physical area required per element and eliminates the need for multiple discrete components, thereby reducing both the overall system size and manufacturing costs through simplified assembly and reduced component count.
Solution Approach 2:
The patent changes the fundamental architecture from distributed passive components to integrated active components, altering the system parameters to achieve compact size. The monolithic integration allows for smaller form factor while maintaining full functionality, and the active components enable electronic control that reduces the need for large physical adjustment mechanisms.
4Ease of manufacture
If conventional phased array antennas use expensive analog RF components, then beam forming capability is achieved, but the system becomes prohibitively expensive for commercial applications
Solution Approach 1:
The patent replaces expensive, precision-critical analog RF components with more cost-effective monolithic integrated vector generators. These integrated components can be manufactured using standard semiconductor fabrication processes, significantly reducing the cost per unit while maintaining the necessary beam forming capability through electronic control of amplitude and phase.
Data Source
AI summary
In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are independently adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signals of various polarizations are received and combined into at least one receive beam output. In a transmit embodiment, at least one transmit beam input is divided and transmitted through multiple radiating elements, with the transmitted beams having various polarizations. In an exemplary embodiment, the phased array antenna provides multi-beam formation over multiple operating frequency bands. The wideband nature of the active components allows for operation over multiple frequency bands simultaneously.