研究目的
To present novel wideband contra-directional couplers based on single conductor ridge waveguide and their applications, demonstrating wide bandwidths and tight coupling in a compact volume.
研究成果
The article presents novel ridge waveguide contra-directional couplers that offer wide bandwidth and tight coupling in a compact size. The design methodology, based on even and odd TE modes, was validated through the fabrication and testing of an S-band coupler and a C-band three-way combiner, showing excellent agreement between simulated and measured results without the need for tuning. The couplers address limitations of existing technologies and offer potential for various applications.
研究不足
The dispersive nature of the TE modes limits the achievable bandwidth of the coupler. The design requires careful shaping of the coupling iris to mitigate these effects.
1：Experimental Design and Method Selection:
The design methodology is inspired by the even and odd modes used in TEM coupled lines couplers but implemented with TE modes in ridge waveguides. The design involves creating a coupling section in a quadruple-ridge waveguide that supports two independent even and odd TE modes.
2：Sample Selection and Data Sources:
The study includes the synthesis, fabrication, and testing of an S-band proof of concept prototype and a C-band three-way combiner.
3：List of Experimental Equipment and Materials:
Ridge waveguides, SMA connectors, and CNC milling for fabrication.
4：Experimental Procedures and Operational Workflow:
The design starts with the coupling section in a quadruple-ridge waveguide, followed by optimization for the required impedance levels. Prototypes are then fabricated and tested.
5：Data Analysis Methods:
The performance is evaluated based on bandwidth, coupling, return loss, and isolation levels, with comparisons made between simulated and measured results.
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