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This work presents a simple approach for a continuously tunable phase shifter design based on liquid crystal (LC) technology for the V-band. The main component of the phase shifter is a partially dielectric filled parallel-plate waveguide. For continuous tunability, liquid crystal is inserted inside the dielectric slab. This assembly, being fed by WR15 waveguides, maintains a simple and efficient...
This work presents a simple approach for a continuously tunable phase shifter design based on liquid crystal (LC) technology for the V-band. The main component of the phase shifter is a partially dielectric filled parallel-plate waveguide. For continuous tunability, liquid crystal is inserted inside the dielectric slab. This assembly, being fed by WR15 waveguides, maintains a simple and efficient...
This work presents a liquid crystal (LC) based phase shifter in a dielectric waveguide (DW) topology consisting of core and cladding for the W-band. For continuous tunability, a part of the core material is replaced by liquid crystal. Furthermore, suggestions of materials for designing such a DW, i.e. for core and cladding, are given in this paper. In comparison to other topologies, the advantage...
This work presents an interference based W-band single-pole double-throw (SPDT) in rectangular waveguide and liquid crystal technology. In radiometers, this kind of SPDT can be used e.g. for switching to the calibration load for power calibration. The SPDT is designed with an E-plane power divider, two different paths for the phase shifting regions, being separated by 30 mm to provide enough space...
This paper presents for the first time, an electrically tunable dielectric line based on fiber topology. A fiber segment is filled with liquid crystal (LC) for continuous tuning of the differential phase between 0° to 90° by an applied biasing voltage of up to ±500 V. This phase shifter is aimed to be implemented into a RF switch (Single-Pole Double-Throw, SPDT), to switch between the calibration...
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