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The increasing demands on wideband satellite services and wider band transponder architecture have imposed research on the full-wave electromagnetic (EM) design of wideband output multiplexer (OMUX) for satellite payload subsystems. In this paper, three common spurious mode effects existed in the design of a waveguide manifold multiplexer, namely cavity higher-order mode resonance, manifold higher-order...
A stepped circular waveguide cavity provides an effective way for shifting or even suppressing unwanted spurious modes in a circular waveguide dual-mode (CWDM) filter. This useful property may be used in a wideband waveguide contiguous channel output multiplexer (OMUX) in satellite payloads. In this paper, a technique for automatically designing a stepped circular waveguide dual-mode (SCWDM) filter...
Output multiplexer (OMUX) is a key building block of a communication satellite payload system. One of the important concerns in an OMUX design is spurious free in the whole working bandwidth to ensure no interference to the high power signal integrity. Although some spurious resonances caused by the fundamental mode can be predicted at circuit level simulation, many hidden spurious resonances caused...
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