A phase shifter (100) with controllable attenuation and a method for controlling the phase shifter is disclosed, the phase shifter (100) comprising a plurality of transmission line segments (120, 220) coupled in series, wherein each said transmission line segment (120, 220) comprises an attenuation circuit (130, 230), selectively couplable between a signal line (126, 222) of the transmission line segment (120, 220) and ground to selectively attenuate a signal propagating through the transmission line segment (120, 220). Each transmission line segment (120, 220) is switchable between a first configuration providing a first phase shift for a signal propagating through the transmission line segment (120, 220) and a second configuration providing a second phase shift, greater than said first phase shift, for a signal propagating through the transmission line segment (120, 220).

The present invention discloses an ultra wide band digital phase shifter, wherein the phase shifter includes a coupler, a first impedance network and a second impedance network. The coupler is cascaded by spiral inductor coupling units; each stage of spiral inductive coupling unit includes a first spiral inductor and a second spiral inductor coupled mutually; multistage cascade of the spiral inductor coupling units is implemented through the series connection of each stage of first spiral inductors and the series connection of each stage of second spiral inductors; and the coupling interval or microstrip band width of each stage of spiral inductor coupling unit in the coupler from the exterior to the interior decreases gradually. The impedance networks are implemented using LC circuits and switching elements, and the states of the impedance networks are switched by a switch, thus producing phase displacement; therefore, the impedance network is rational in structure and is easy to implement; the phase shifter has the advantages of compact structure, small area occupation and good wideband character and has larger advantages and application space in integrated chip applications.

An antenna structure and an antenna array are disclosed. The antenna structure includes first and second feeding traces, first to fourth vias and a radiator. The first feeding trace has a first meander portion that generates a 180-degree phase change along a length thereof at an operation frequency of the antenna structure. The second feeding trace has a second meander portion that generates a 180-degree phase change along a length thereof at the operation frequency of the antenna structure. The first and second vias are respectively coupled to two opposite points of the first feeding trace with respect to the first meander portion. The third and fourth vias are respectively coupled to two opposite points of the second feeding trace with respect to the second meander portion. The radiator coupled to the first to fourth vias. The antenna array includes antenna cells each with the antenna structure.

Aspects of the present relate to reflection type phase shifters for radio frequency (RF) wireless devices. Reflection type phase structures in accordance with aspects described herein can improve device performance with compact configurations, such as where magnetic and capacitive coupling is integrated into a device design to integrate interactions between elements for improved phase shifting performance in a compact design with wideband performance.

The present disclosure provides a phase shifter including: a first substrate and a second substrate. The first substrate includes a reference electrode and a signal electrode, and the signal electrode includes a main structure and multiple branch structures. The second substrate includes multiple patch electrodes, and the multiple patch electrodes are arranged in a one-to-one correspondence with the multiple branch structures to form multiple variable capacitors. The phase shifter has a first region, and a second region and a third region which are respectively provided on two sides of the first region; and for any two of variable capacitors located on a same side of the first region, an overlap area of patch electrode and branch structure of a variable capacitor close to the first region is greater than or equal to that of a variable capacitor away from the first region.

There is provided a phase shifter including a substrate, a signal line on the substrate, ground lines disposed in pairs on the substrate, and at least one film bridge. Two ground lines of the ground lines are on two sides of the signal line and are respectively spaced apart from the signal line. Each film bridge includes a plurality of connection walls and a bridge floor structure that is opposite to the substrate. The connection walls are respectively on the two ground lines. The bridge floor structure includes a phase shifting electrode and at least one pair of adsorption electrodes respectively connected to two sides of the phase shifting electrode. The phase shifting electrode is opposite to the signal line. Two adsorption electrodes in each pair are respectively opposite to the two ground lines, and are respectively connected to the connection walls on the two ground lines.

A phase shifter element includes: a first signal path and a second signal path extending in parallel between an input node of the phase shifter element and an output node of the phase shifter element; at least one first signal path e-fuse in the first signal path; and at least one second signal path e-fuse in the second signal path. The phase shifter element is programmable to select one of the first signal path and the second signal path. The phase shifter element has a first phase shift when the first signal path is selected and a second phase shift, different than the first phase shift, when the second signal path is selected.

An antenna structure and an antenna array are disclosed. The antenna structure includes first and second feeding traces, first to fourth vias and a radiator. The first feeding trace has a first meander portion that generates a 180-degree phase change along a length thereof at an operation frequency of the antenna structure. The second feeding trace has a second meander portion that generates a 180-degree phase change along a length thereof at the operation frequency of the antenna structure. The first and second vias are respectively coupled to two opposite points of the first feeding trace with respect to the first meander portion. The third and fourth vias are respectively coupled to two opposite points of the second feeding trace with respect to the second meander portion. The radiator coupled to the first to fourth vias. The antenna array includes antenna cells each with the antenna structure.

A slot antenna is disclosed. The slot antenna structure includes a dielectric substrate, a grounding plate and a resonator. The grounding plate is disposed over a first side of the dielectric substrate and defines a slot. The feeding strip is disposed over a second side of the dielectric substrate and opposite to the grounding plate. The resonator is coupled to the grounding plate and is disposed horizontally within the slot.

The present disclosure provides a phase shifter including: a first substrate and a second substrate. The first substrate includes a reference electrode and a signal electrode, and the signal electrode includes a main structure and multiple branch structures. The second substrate includes multiple patch electrodes, and the multiple patch electrodes are arranged in a one-to-one correspondence with the multiple branch structures to form multiple variable capacitors. The phase shifter has a first region, and a second region and a third region which are respectively provided on two sides of the first region; and for any two of variable capacitors located on a same side of the first region, an overlap area of patch electrode and branch structure of a variable capacitor close to the first region is greater than or equal to that of a variable capacitor away from the first region.