Spatium Amplifier Wedge Segmentation for Hermetic High-Frequency RF
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Solution Overview
Problem
Conventional spatium amplifiers face issues with non-replaceable wedges, poor performance at high frequencies due to PCB limitations, and lack of hermeticity, making them unsuitable for harsh environments and military applications.
Innovation Solution
A spatium amplifier assembly with radially arranged fin pairs forming tapering channels, allowing individual amplifier replacement and high-frequency signal handling, and achieving hermeticity through a core and shell member design with heat sinks for improved thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wedges are precisely machined together in a conventional spatium amplifier, then the amplifier can be assembled, but individual wedges become non-replaceable and the entire amplifier becomes unusable upon single wedge failure
Solution Approach 1:
The amplifier is divided into independent modular wedges that can be individually replaced. Each wedge is a self-contained unit with its own antenna, circuit board, and amplifier components, allowing failure isolation and individual replacement without affecting other wedges in the array.
Solution Approach 2:
Failed wedges can be discarded and replaced with new or refurbished units. The modular design enables easy removal of defective wedges and installation of replacement wedges, recovering system functionality without replacing the entire amplifier assembly.
2Device complexity
If antenna is etched into PCB for compact integration, then device complexity is reduced, but high-frequency signals greater than 26.5 GHz cannot be accurately captured or passed without unacceptable interference
Solution Approach 1:
The antenna is extracted from the PCB substrate and implemented as a separate discrete component. This separation allows the antenna to be optimized for high-frequency operation using materials and structures specifically suited for RF performance, while the PCB handles only the amplifier circuitry.
Solution Approach 2:
The antenna utilizes composite construction with materials specifically selected for high-frequency RF performance, combining conductive elements with low-loss dielectric materials to minimize signal interference and maximize signal accuracy at frequencies greater than 26.5 GHz.
3Ease of manufacture
If conventional amplifier design is used, then manufacturing is simpler, but hermeticity cannot be obtained and environmental contamination interferes with RF signal accuracy
Solution Approach 1:
The amplifier components are nested within a hermetic enclosure that provides environmental protection. The modular wedges are contained within a sealed housing that prevents contamination ingress while maintaining signal integrity, with internal mounting structures that simplify assembly.
Solution Approach 2:
A hermetic seal is implemented using flexible sealing structures and thin film barriers that provide environmental protection while allowing for thermal expansion and contraction. The seal maintains hermeticity across temperature cycles and mechanical stress without compromising RF signal performance.
4Ease of manufacture
If conventional amplifier design is used, then assembly is simpler, but thermal interface for heat removal is poor
Solution Approach 1:
The thermal management function is merged with the structural support function. The enclosure and mounting structures are designed to simultaneously provide mechanical support and serve as heat sinks, conducting heat away from amplifier components through thermally conductive pathways integrated into the housing.
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
Enables easy replacement of individual amplifiers, efficient handling of high-frequency RF signals, and enhanced hermeticity, making the spatial coupler suitable for harsh environments and military applications.
Implementation Method 1
Each fin pair of the plurality of fin pairs forms a tapering channel having a first channel height at the second end of the antenna and a second channel height, which is smaller than the first channel height, at the first end of the antenna
Implementation Method 2
heat sinks for improved thermal management
Implementation Method 3
heat sinks for improved thermal management
Data Source
AI summary
A spatium amplifier includes a plurality of amplifiers connected between a pair of spatial couplers, each having a core member and a shell member forming an antenna. The core member includes a cylindrical core portion and a plurality of tapering core fins extending radially outwardly from the cylindrical core portion. The shell member includes a cylindrical shell portion and a plurality of tapering shell fins extending radially inwardly from the cylindrical shell portion to form a plurality of fin pairs. Each fin pair forms a tapering channel having a first channel height at a first end of the antenna and a second channel height larger than the first channel height at a second end of the antenna. Each of the plurality of amplifiers is electromagnetically coupled to a respective fin pair at the first end of each of the antennas.