Monolithic Quad Switch for Reconfigurable Phased Array Antennas
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Solution Overview
Problem
Conventional phased array RF antennas are not reconfigurable, leading to high costs, limited size, bandwidth, and performance due to the lack of suitable mounting components and non-linearity, making them inflexible and costly to produce and test for different applications.
Innovation Solution
The use of monolithic microwave integrate circuit (MMIC) technology with gallium arsenide (GaAs) substrates and quad switches allows for a reconfigurable phased array antenna with adjustable size, wide bandwidth, and enhanced performance, enabling the antenna to be reused and adapted to various configurations with reduced overall cost and lead time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional phased array antenna fabrication methods are used, then each unique application requires separate development, design, and testing, but this results in high costs and long lead times
Solution Approach 1:
The antenna structure is made dynamically reconfigurable through floating switches that can change the electrical connectivity of radiating elements. The switches allow the antenna to transform between different operational configurations (series/parallel connections, element activation patterns) without physical reassembly, enabling a single fabricated unit to serve multiple applications.
Solution Approach 2:
The patent creates a universal antenna platform using MMIC technology where a single fabricated antenna incorporates multiple radiating elements and switching networks that can be configured for different beamforming patterns, frequency operations, and radiation patterns. This multi-functional design eliminates the need for separate antennas for each application.
2Reliability
If conventional phased array antenna fabrication methods are used, then discrete packaged SMT components are employed, but this limits size, bandwidth, and performance due to unsuitable topologies and parasitics
Solution Approach 1:
The patent merges multiple discrete components (radiating elements, switching elements, interconnects, and ground structures) into a single monolithic MMIC device. This integration eliminates the need for separate packaged SMT components and their associated parasitic inductances and capacitances, providing optimized topologies that achieve better performance predictability and reduced parasitic effects.
Solution Approach 2:
The patent replaces mechanical assembly of discrete SMT components with a semiconductor fabrication process that creates a monolithic integrated structure. This substitution eliminates mechanical connections and their associated parasitics, providing more reliable electrical performance that can be accurately predicted through simulation.
3Adaptability or versatility
If MMIC technology is used with gallium arsenide substrates, then the antenna achieves high isolation interconnection and reconfigurability, but requires specialized fabrication processes
Solution Approach 1:
The patent incorporates all switching elements, interconnect structures, and ground references into the initial MMIC fabrication process rather than adding them later. The floating switches and radiating elements are created simultaneously during semiconductor manufacturing, eliminating subsequent assembly steps and reducing overall lead time despite the specialized GaAs process requirements.
Data Source
AI summary
A phased array antenna which can change the configuration of the phased array antenna by controllable quad switches on the phased array antenna is presented. The phased array antenna adapts monolithic microwave integrate circuit (MMIC) technology to have high isolation interconnection of the reconfigurable phased array antenna. The reconfigurable phased array antenna can be reusable and adaptable to different configurations so that the overall cost and lead time of the phased array antenna is reduced compared to the existing RF antennas in the market.