A phase shifter includes a radio frequency input transmission line, a radio frequency output transmission line, and a first branch and a second branch coupled in parallel between the radio frequency input transmission line and the radio frequency output transmission line, the first branch includes first switch components and first transmission lines coupled in series, and the second branch includes a second transmission line including a first terminal coupled to the radio frequency input transmission line and a second terminal, a third transmission line including a third terminal coupled to the second terminal and a fourth terminal coupled to the radio frequency output transmission line, second switch components, where one terminal of each of the second switch components is coupled to a connection node of the second transmission line and the third transmission line, and the other terminal is coupled to a corresponding grounding component.

A leaky-wave antenna includes a substrate extending along an axis, and a dielectric waveguide extending along the axis and arranged in the substrate. The dielectric waveguide includes at least a top side, a bottom side, and opposite sides arranged between the top and bottom sides. A distance defined between the opposite sides varies along the axis for at least part of a length of the dielectric waveguide.

The disclosure provides a display panel and a display apparatus, and belongs to the field of display technology. The display panel includes a display backplane and an antenna structure; the display panel further includes a frequency selective surface on a side of the antenna structure close to a light exit surface of the display panel; the frequency selective surface is configured to transmit an electromagnetic wave with a specific frequency, so as to enhance a radiation gain of the antenna structure.

A trifurcated antenna radiator is disclosed. The trifurcated antenna radiator includes a first radiator, a second radiator, and a third radiator. The first and second radiators are coupled to a negative terminal and the third radiator is coupled to a positive terminal. The first radiator includes a first arched element having a first end and a second end and a first apex therebetween. The second radiator includes second arched element having a third end and a fourth end and a second apex therebetween. The first and second radiators may be symmetrical or asymmetrically with respect to each other. The third radiator may be symmetrical or asymmetrical.

Provided is a leaky wave antenna comprising a power supply line receiving power from the outside and a metal plate receiving a signal for forming a beam from the power supply line, in which etching patterns for forming a dual-beam are symmetrically formed on one side of the metal plate and the other side of the metal plate facing the one side and a plurality of vias are disposed between the one side and the other side.

An antenna device according to an embodiment of the present invention includes a dielectric layer, a first radiator disposed on the dielectric layer in a first direction, a second radiator formed in a shape different from that of the first radiator and disposed on the dielectric layer in a second direction, a first transmission line which extends in the first direction to be connected to the first radiator, and a second transmission line which extends in the second direction to be connected to the second radiator, and intersects the first transmission line with being physically or electrically spaced apart therefrom.

Printed circuit boards for a base station antenna include a substrate layer, and a first conductive trace and a second conductive trace which are printed on the substrate layer and cross each other. The first conductive trace has two trace sections separated by the second conductive trace. Adjacent ends of the two trace sections separated by the second conductive trace are connected electrically by a jumper. The jumper has an electrical conductor, is isolated electrically from the second conductive trace and is fixed on the printed circuit board. The electrical conductor and the two trace sections are connected electrically at adjacent ends. The printed circuit board allows flexible wiring of the conductive traces on the printed circuit board.

The present invention discloses an structure for uniformly distributing radiation energy of a millimeter wave antenna, comprising an emitting array antenna and/or receiving array antenna including at least one comb-shaped antenna assembly, wherein the comb-shaped antenna assembly comprises a long-strip-shaped antenna body and a micro-strip antenna radiation assembly; one end of the antenna body can be connected with a millimeter wave circuit capable of generating millimeter waves; the micro-strip antenna radiation assembly includes a plurality of middle micro-strip antenna radiation units which are arranged on the middle section of the antenna body at intervals, and a tail-end micro-strip antenna radiation unit which is arranged at the tail end of the antenna body; and the area of the middle micro-strip antenna radiation units is gradually increased from one end close to the millimeter wave circuit to the other end, such that distribution of energy outwards radiated by each middle micro-strip antenna radiation unit trends to be average.

The present disclosure relates to a microstrip antenna device, which may comprise a center-fed antenna array. Further, the present disclosure provides a radar device, which comprises the antenna device, and a method for fabricating the antenna device. The antenna device comprises a substrate with top and bottom surface, a two-dimensional first and second conductive structure, which are arranged adjacent to each other on the top surface, and a two-dimensional third conductive structure, arranged on the bottom surface and providing an electric ground plane. The first conductive structure comprises a first array of antennas and a first feed network, and the second conductive structure comprises a second array of antennas and a second feed network. Further, a slot line is formed in the third conductive structure, for feeding a signal to the first feed network and to the second feed network.

The present disclosure relates to base station antennas and base stations. One example base station antenna comprises an antenna array, a reflecting plate with a hole, a microstrip circuit comprising a first conductor strip, and a stripline cavity structure comprising a second conductor strip. The microstrip circuit and the stripline cavity structure are respectively located at opposite sides of the reflecting plate. The first conductor strip and the second conductor strip are connected through the hole.