A filter comprising a cavity, a circuit board located in the cavity, and a filter branch is provided. A power divider circuit is disposed on the circuit board, and includes an input end, a main feeder, and an output end, wherein both the input end and the output end are electrically connected to the main feeder, and the main feeder transmits a signal that is input at the input end and is output at the output end. The filter branch includes a first interface and a first filter line, wherein the first interface is disposed at an opening of the cavity, the first filter line is located outside the cavity, the first filter line is electrically connected to the first interface, and the first interface is electrically connected to the main feeder. The first filter line in the filter branch is disposed outside the cavity.

Multi-RET actuators include a plurality of shafts that have respective axially-drivable members mounted thereon. Each of axially-drivable member is mechanically linked to a respective one of a plurality of phase shifters. The multi-RET actuator further includes a motor having a drive shaft and a gear system that is configured to selectively couple the motor to the respective shafts. The gear system is configured so that rotation of the drive shaft in a first direction creates a mechanical linkage between the motor and a first of the shafts 1340/1342, and rotation of the drive shaft in a second direction that is opposite the first direction rotates the first of the shafts.

A phase shifter includes opposite first and second substrates and a dielectric layer between the first and second substrates. The first substrate includes: a first base plate; a signal line and a reference electrode on a side of the first base plate proximal to the dielectric layer. The second substrate includes a second base plate, and at least one patch electrode on a side of the second base plate proximal to the dielectric layer. The phase shifter further includes structures connected to both ends of the signal line, respectively; the first feeding structure changes a transmission direction of a microwave signal through the signal line, so that the microwave signal is transmitted in a first direction; and the second feeding structure changes a transmission direction of the microwave signal through the signal line, so that the microwave signal is transmitted in a second direction.

The disclosure provides a phase shifter, a manufacturing method thereof and an antenna, and belongs to the field of communication technology. The phase shifter includes a first substrate; a signal line and reference lines on the first substrate; a first insulating layer on the signal line; a plurality of electrode film bridges on a side of the first insulating layer distal to the signal line; and a first transmission structure on the first insulating layer and electrically connected to the signal line; and an orthographic projection of the first transmission structure on the first substrate is not overlapped with an orthographic projection of the plurality of electrode film bridges on the first substrate.

Aspects of the present disclosure includes a phase shifter that includes a first meandering transmission line having a first input configured to receive a first input signal and a first output configured to provide a first output signal; and a plurality of switches configured to adjust an effective electrical length of the first meandering transmission line. In some embodiments, a method for processing a millimeter wave communication signal in a phase-array antenna includes determining a phase shift appropriate for the millimeter wave communication signal; determining configuration of a plurality of switches configured to adjust an effective electrical length of a first meandering transmission line configured to receive the millimeter wave communication signal; and setting the plurality of switches

A planar micro-electromechanical system (MEMS)-based phase shifter is described which comprises a dielectric substrate, a grounded coplanar waveguide (GCPW) transmission line for carrying input and output signals, a high-resistivity silicon (HRS) slab coated with metallic gratings over the GCPW line, and a MEMS actuator for adjusting a distance between the HRS slab and the GCPW line to provide a phase shift.

A metamaterial switch. The metamaterial switch includes a first conductive plate, a first loaded conductive plate, and a magneto-dielectric material. The first loaded conductive plate includes a second conductive plate and a first tunable impedance surface set. Each tunable impedance surface in the first tunable impedance surface set includes a respective tunable conductivity. An effective permittivity of the metamaterial switch is configured to be adjusted to a first predetermined value. The effective permittivity of the metamaterial switch is adjusted responsive to tuning a respective tunable conductivity of each respective tunable impedance surface in the first tunable impedance surface set.

A feed network includes an adjustable electromechanical phase shifter that comprises a main printed circuit board and a phase shifting unit. The adjustable electromechanical phase shifter is configured to shift the phase of an RF signal that is input to the feed network and provide the phase shifted RF signal to at least one radiating element that is positioned on a first side of a reflector of an antenna, where the phase shifting unit is formed on the surface of a first side of the main printed circuit board, and the first side of the main printed circuit board is a side that is closer to the at least one radiating element, and the main printed circuit board is positioned on the first side of the reflector.

A phase shifter includes a printed circuit board and a trace located on the printed circuit board that is configured to transmit signals. The printed circuit board includes a first part covered by the trace and a second part not covered by the trace, where the second part includes at least one hollowed out area near the trace.

A phase shifter and an antenna are provided. The phase shifter includes: oppositely arranged first and second substrates; a medium layer between the first and second substrates and having an adjustable dielectric constant; a phase shift unit including a transmission line and a phase control electrode, the transmission line being between the first substrate and the medium layer, and the phase control electrode being between the second substrate and the medium layer; and multiple first wires for regulating an electric field between the transmission line and the phase control electrode, an orthographic projection of the first wires onto the first substrate being parallel to an orthographic projection of the transmission line onto the first substrate, the orthographic projection of the first wires onto the first substrate being on opposite sides of the orthographic projection of the transmission line onto the first substrate.