Integrated Waveguide Combiner Network for Lightweight Antenna Arrays
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Solution Overview
Problem
Traditional hollow metal waveguide antennas face challenges in size, weight, and cost due to complex fabrication methods, leading to increased size, weight, and part count, which limits their performance and viability, especially in applications like small satellites where space and weight constraints are critical.
Innovation Solution
The development of an integrated antenna system using a three-dimensional printing process that combines electromagnetic, structural, and thermal performance metrics into a single, reduced-size, and weight-efficient component, eliminating the need for multi-piece assemblies and reducing losses through optimized metal usage and geometry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional hollow metal waveguide antennas are fabricated using complex multi-piece assembly methods, then structural strength and electromagnetic performance can be maintained, but the size, weight, and part count increase significantly
Solution Approach 1:
The patent combines multiple separate waveguide components (H-plane combiner, E-plane combiner, waveguide ports, and U-bends) into a single integrated printed circuit board structure. This merging eliminates the need for multiple discrete metal waveguide pieces and their associated flanges, bolts, and seals, thereby dramatically reducing weight while maintaining the required electromagnetic combining functions through optimized PCB trace and cavity design.
Solution Approach 2:
The invention replaces traditional mechanical waveguide fabrication methods with additive manufacturing (3D printing) and PCB fabrication techniques. Instead of assembling multiple metal components with mechanical fasteners, the patent uses layered deposition to create complex waveguide geometries directly, substituting mechanical assembly with digital manufacturing processes that produce lighter, integrated structures.
2Reliability
If traditional hollow metal waveguide antennas use multi-piece fabrication methods, then electromagnetic performance can be maintained, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent integrates the H-plane combiner, E-plane combiner, waveguide ports, and U-bend sections into a single monolithic structure fabricated using additive manufacturing. This eliminates the need for multiple separate components and their complex interconnections, reducing assembly complexity from multiple precision-machined metal parts to a single printed structure with integrated features.
Solution Approach 2:
The single integrated waveguide structure performs multiple functions simultaneously: it provides signal combining through H-plane and E-plane configurations, maintains electromagnetic isolation between ports, provides mechanical support, and enables thermal management. This multi-functionality in a single component reduces overall device complexity compared to separate specialized components.
3Strength
If traditional hollow metal waveguide antennas are assembled from multiple pieces, then structural integrity can be maintained, but thermal dissipation efficiency decreases
Solution Approach 1:
The patent creates a unified thermal management structure by integrating heat dissipation pathways directly into the waveguide body through additive manufacturing. Instead of relying on thermal contact between multiple assembled metal components (which creates thermal resistance at interfaces), the single printed structure provides continuous thermal conduction paths from hot spots to heat sinks, improving thermal dissipation efficiency while maintaining structural integrity.
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
This approach results in a compact, lightweight antenna system with improved performance, reduced weight, and lower costs, enhancing the viability of satellite communications and other applications by minimizing physical size and weight while maintaining high gain and thermal efficiency.
Implementation Method 1
An integrated antenna system may be fabricated using a three-dimensional printing process
Implementation Method 2
hollow metal waveguide. This is a structure that has a cross section of dielectric, air, or vacuum which is enclosed on the edges of the cross section by a conductive material
Implementation Method 3
An antenna structure designed for transmitting and receiving signals wirelessly between two points
Data Source
AI summary
A combiner network is provided. The combiner network may include a combiner of a first type. The combiner network may further include a combiner of a second type. The combiner of a first type includes a first plurality of waveguide ports and an H-plane combiner connected to an E-plane combiner. The combiner of the second type includes a second plurality of waveguide ports and an H-plane combiner including a U-bend.