Structures including an electro-optical phase shifter and methods of fabricating a structure including an electro-optical phase shifter. The structure includes a waveguide core on a semiconductor substrate, and an interconnect structure over the waveguide core and the semiconductor substrate. The waveguide core includes a phase shifter, and the interconnect structure includes a slotted shield and a transmission line coupled to the phase shifter. The slotted shield includes segments that are separated by slots. The slotted shield is positioned between the transmission line and the substrate.

A directional antenna array, to a radio-frequency antenna that includes one or more directional arrays and that is directional in one or two dimensions, and to a method for pointing the radio-frequency antenna and the associated computer program product. The directional antenna array comprises: a rectangular waveguide extending along a longitudinal axis, and comprising: a fixed portion with two lateral faces and an upper face, and a bottom part; a plurality of radiating elements placed on the fixed portion of the waveguide. The bottom part of the rectangular waveguide is movable translationally in a direction of movement parallel to the lateral faces, the maximum distance between the bottom part and the upper face being smaller than the distance between the lateral faces.

A feed network arrangement for generating a multi-antennae signal includes a plurality of coupler devices coupled to one another in waveguide technique, and a plurality of adjustable length of line devices. At least one of the plurality of adjustable length of line devices is coupled to at least one of the plurality of coupler devices, where the one of the plurality of adjustable length of line device is configured to calibrate an electrical length of a supply line of the at least one of the plurality of coupler devices, In addition, the plurality of coupler devices are arranged such that a plurality of inputs of the feed network arrangement are disposed on a first side of the feed network arrangement and a plurality of outputs of the feed network arrangement are disposed on a second side of the feed network arrangement.

Embodiments of the present invention provide an apparatus and a method for interference cancellation. The apparatus includes: a splitter, configured to acquire a first transmit signal and a second transmit signal; a first circulator, configured to transmit the first transmit signal to an antenna and to send a to-be-processed signal to a combiner, where the to-be-processed signal includes a receive signal component and a self-interference signal component, the self-interference signal component corresponds to an interference signal generated due to that the antenna reflects the first transmit signal; a second circulator, configured to: transmit the second transmit signal to an equivalent load, and acquire a reference signal generated due to that the equivalent load reflects the second transmit signal, where an impedance of the equivalent load corresponds to an impedance of the antenna; and a combiner, configured to cancel the self-interference signal component according to the reference signal.

The present invention relates to liquid-crystalline media comprising one or more pleochroic dyes and one or more compounds selected from the group of compounds of formulae I, II and III,

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in which the parameters have the meaning indicated in Claim 1, and to components comprising these media for high-frequency technology, in particular phase shifters and microwave array antennas.

The present disclosure relates to a linkage mechanism for a phase shifter assembly, comprising a rotation device having a rotation shaft fixed to a substrate of the phase shifter assembly and a rotation member configured to rotate about said rotation shaft; a first drive member which can be operatively engaged to the rotation member such that rotation of the rotation member can cause movement of the first drive member; a second drive member disposed on and moving together with the rotation member; and a translation device including a translation member which can be operatively engaged to the second drive member such that movement of the second drive member can cause movement of the translation member, wherein the rotation device and the translation device are configured to move in association with each other during operation of the phase shifter assembly. The present disclosure also relates to a phase shifter assembly including the above-mentioned linkage mechanism.

Tunable phase shifters and methods for using the same include a signal line; one or more grounding lines; one or more crossing lines below the signal line in proximity to the signal line and substantially perpendicular to a longitudinal direction of the signal line, where the crossing lines conform to the shape of the signal line along at least three surfaces of the signal line and where the crossing lines have a tunable capacitance; and an inductance return line below the crossing lines substantially parallel to the longitudinal direction of the signal line, where the inductance return line provides a tunable inductance.

A ferrite controller includes a single array of two or more ferrite control elements. The ferrite control elements each include a radio frequency (RF) path assembly that includes a RF path ferrite element and a RF path dielectric element. The ferrite control elements also include a magnetizing ferrite assembly that includes a magnetizing ferrite element; one or more structural dielectric elements; and a flexible insulated waveguide wall. The magnetizing ferrite element is attached to the one or more structural dielectric elements, wherein the flexible insulated waveguide wall surrounds the magnetizing ferrite element and the structural dielectric elements, wherein the RF path ferrite element and the magnetizing ferrite element are attached to form a ferrite toroid. The ferrite control elements also include two tapered impedance matching transformers attached to the RF path assembly and the magnetizing ferrite assembly.

The present invention is an apparatus for shifting the phase of an radiofrequency signal. The device has an input line and an output line. An input switch is connected to the input line. The input switch is has several input throws. An output switch is connected to the output line. The output switch has several output throws which correspond to the input throws. The apparatus also has several phase shift lines. Each phase shift line has a true path length that is different from the true path lengths of the other phase shift lines.

The suprastructure over a substrate integrated waveguide (SIW) can provide for beam scanning utilizing a reconfigurable metasurface. The reconfigurable metasurface will have a plurality of PIN diode arrays that can be turned ON and OFF. In one design, the length of the reconfigurable metasurface is effectively enlarged or reduced in size to achieve beam scanning. In another design the tilt angle of the reconfigurable metasurface is adjusted to achieve beam scanning. The suprastructure also can be modified with metallic offset wings, where two or more pairs of offset wing can form a horn shaped element. The presence of the wings or horn, as well as control of the size and number of the wings can improve the gain of the SIW. These two suprastructure improvements may be used in combination, and they may be used over classical slotted SIWs or over an SIW with curved sections between consecutive slots.