Gap Waveguide Protruding Elements Distribution
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Solution Overview
Problem
Current microwave devices for high-frequency applications above 30 GHz face challenges in cost-efficient production due to the complexity and high production costs of forming dense arrays of protruding elements, which are necessary for effective wave propagation control in gap waveguide technology.
Innovation Solution
The solution involves distributing the texture used to stop wave propagation between two conducting surfaces, allowing for protruding elements to be made half as high or with lower density, which can be produced more cost-effectively, while maintaining the same waveguide properties by arranging them in a periodic or quasi-periodic pattern to control wave propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dense arrays of protruding elements are formed in gap waveguide technology to control wave propagation, then wave propagation control is improved, but production cost and manufacturing complexity increase significantly
Solution Approach 1:
The texture is segmented and distributed between two conducting surfaces instead of being concentrated on one surface. This segmentation allows each surface to have fewer protruding elements, reducing manufacturing complexity while maintaining the wave propagation control function through the combined effect of both surfaces.
Solution Approach 2:
The solution moves from a single-surface texture to a two-surface distribution, adding a dimensional aspect to the texture arrangement. By distributing protruding elements across two conducting surfaces facing each other, the system achieves the same wave control function with reduced density on each individual surface.
2Reliability
If protruding elements are made with high density to achieve effective wave stopping, then wave propagation control is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The texture complexity is segmented by distributing protruding elements across two conducting surfaces. Each surface contains a simplified subset of the total texture pattern, reducing the complexity of forming dense arrays on any single surface while maintaining overall wave stopping effectiveness through the combined texture of both surfaces.
3Reliability
If conventional gap waveguide technology is used with full-length protruding elements, then wave propagation control is achieved, but production cost increases
Solution Approach 1:
The full-length protruding elements are segmented into two sets of shorter elements distributed on opposite conducting surfaces. This segmentation reduces manufacturing cost by eliminating the need to form long, dense arrays on single surfaces, while the combined effect of the two distributed sets maintains the required waveguide properties.
Solution Approach 2:
The solution transitions from single-surface full-length elements to two-surface distributed elements, utilizing the third dimension (the gap between surfaces) to distribute the texture. This dimensional change enables cost-effective production by reducing the density requirements on each surface while maintaining wave propagation control.
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 reduces production costs significantly without compromising the performance of the microwave device, allowing for robust and efficient manufacturing of microwave devices suitable for high-frequency applications, including flat planar array antennas and RF packaging.
Implementation Method 1
protruding elements arranged in a periodically or quasi-periodically pattern and fixedly connected to at least one of said conducting layers, thereby forming a texture to stop wave propagation in a frequency band of operation in other directions than along intended waveguiding paths
Data Source
AI summary
A microwave device is based on gap waveguide technology, and comprises two conducting layers (101, 102) arranged with a gap there between, and protruding elements (103, 104) arranged in a periodically or quasi-periodically pattern and fixedly connected to at least one of said conducting layers, thereby forming a texture to stop wave propagation in a frequency band of operation in other directions than along intended waveguiding paths. Sets of complementary protruding elements are either each formed in said pattern and arranged in alignment and overlying each other, the complementary protruding elements of each set forming part of the full length of each protruding element of the pattern, or the sets of complementary protruding elements are arranged in an offset complementary arrangement, the protruding elements of one set thereby being arranged in between the protruding elements of the other set.