Abstract: This disclosure provides an antenna system. The antenna system includes a first antenna and a second antenna. The first antenna includes a first radome, a first radiating assembly, and a feed network. The second antenna includes a second radome and a second radiating assembly. The first radome has a first outer surface. The first outer surface has a groove. The feed network is disposed on a side part of the groove, and the feed network is disposed in the first radome and is connected to the first radiating assembly. The second radome has a second outer surface, the second radiating assembly is disposed in the second radome, and at least a part of the second outer surface extends into the groove. In the antenna system provided in this disclosure, when the first antenna and the second antenna are used in combination, a thickness size is not significantly increased.

Abstract: This application provides an antenna and a communication system. The antenna includes a front mounting surface, a side mounting surface, a front radiating element array, and a side radiating element array. The front radiating element array is mounted on the front mounting surface, and the side radiating element array is mounted on the side mounting surface. An included angle on a side away from the front radiating element array is a first included angle, and the first included angle is less than 180°. One end of a circuit module is connected to an antenna port connected to the front radiating element array and an antenna port connected to the side radiating element array, and another end of the circuit module is configured to connect to radio frequency ports.

Abstract: This application provides an antenna system and a base station antenna feeder system. The antenna system includes a first antenna and a second antenna. The first antenna includes a first radiating element array and a first phase shifter, and the first phase shifter is electrically connected to the first radiating element array. The second antenna includes a second radiating element array and a second phase shifter, and the second phase shifter is electrically connected to the second radiating element array. The first phase shifter is disposed at an edge of the first antenna, and the first phase shifter is configured to be detachably connected to the second antenna. In the antenna system in this solution, the first antenna and the second antenna can be detachably connected, so that an antenna configuration can be upgraded without replacing an original antenna and with low costs and a convenient operation.

Abstract: An antenna system and a base station antenna feeder system are provided. The antenna system includes a first frequency band radiation element array, a frequency selective surface, a second frequency band radiation element, and a phase shifter. The frequency selective surface is configured to reflect a signal of the first frequency band radiation element array and to transmit a signal of the second frequency band radiation element array. The phase shifter is connected to the first frequency band radiation element array and is configured to feed the first frequency band radiation element array. The phase shifter includes a cavity which is disposed at an edge of the frequency selective surface, a first extension direction of the cavity being consistent with a second extension direction of the first frequency band radiation element array.

Abstract: This disclosure provides a feed network, an antenna apparatus, and a communication device. A main portion is disposed with a first electric-conductor and a second electric-conductor. In addition, two branch portions are disposed, one end of a first branch portion is electrically connected to the first electric-conductor, and one end of a second branch portion is electrically connected to the second electric-conductor. In this way, when two radiation parts in a same polarization direction of a radiating element are electrically connected to the first branch portion and the second branch portion respectively, a transmission structure of the feed network may feed two radio frequency signals, for example, two equi-amplitude phase-inverted radio frequency signals, into the two radiation parts of the radiating element respectively. The feed network in this embodiment of this application has a simple line, so that space occupied by the feed network in the antenna apparatus is reduced.

Abstract: A curvature controllable directional drilling device is disclosed. The drilling device includes: a drill bit, a power unit, a rigid bending unit, a bendable outer wall, and a wedge deflection tool. The power unit is to provide a rotary power to the drill bit. The rigid bending unit is set between the drill bit and the power unit, to bend on a basis of an initial curvature under an external force. The bendable outer wall is set on an outer side of the power unit and the rigid bending unit. The wedge deflection tool is set at one end of the bendable outer wall near the drill bit, to receive a reaction force and bend the rigid bending unit. By a coordination between the wedge deflection tool and the power unit, a drilling direction of the drill bit connected to the rigid bending unit can be adjusted.

Abstract: Disclosed are methods and systems for detection and quantification of human papilloma virus (HPV) DNA. Aspects of the disclosure are directed to detection of HPV DNA from cell-free biological samples (e.g., serum, plasma). Disclosed are methods for detecting and quantifying HPV DNA from one or more high-risk types including HPV16, HPV18, HPV31, HPV33, HPV35, HPV39, HPV45, HPV51, HPV52, HPV58, HPV59, HPV56, and HPV68. The present disclosure includes compositions (e.g., primers, probes) useful for amplification and detection of HPV DNA.

Abstract: An antenna apparatus is provided to include a reflection plate, a radiating element disposed on the reflection plate and including a balun and at least two radiation arms, and a feeding network including a phase shifter. The balun includes a first feeding layer, a common ground layer, and a second feeding layer disposed in sequence. The phase shifter includes a feeding member. One end of the common ground layer is electrically connected to one of the radiation arms, and the other end of the common ground layer is electrically connected to the reflection plate. One end of the first feeding layer and one end of the second feeding layer are electrically connected to another one of the radiation arms, the other end of the first feeding layer is electrically connected to the feeding member, and the feeding member and the first feeding layer are an integrated member.

Abstract: This application provides an antenna and an array antenna. The antenna in this application includes a first radiating element and a second radiating element, where four dipoles enclose to form the first radiating element, and the second radiating element is a radiating element disposed on an inner side of the first radiating element. The first radiating element is configured to support a transmit frequency band, and the second radiating element is configured to support a receive frequency band; or the first radiating element is configured to support a receive frequency band, and the second radiating element is configured to support a transmit frequency band.

Abstract: A multi-band antenna structure, including a first antenna element, a second antenna element, a reflection panel, and a first parasitic structure of the first antenna element. A distance between the reflection panel and an antenna element with a higher operating frequency band is less than a distance between the reflection panel and an antenna element with a lower operating frequency band. A distance between the first antenna element and the second antenna element is less than 0.5 times a vacuum wavelength corresponding to a lower frequency bands. A distance between the first antenna element and the first parasitic structure is less than 0.5 times a vacuum wavelength corresponding to an operating frequency band of the first antenna element. A distance between the second antenna element and the first parasitic structure is less than 0.5 times a vacuum wavelength corresponding to an operating frequency band of the second antenna element.

Abstract: A feeding network, an antenna, an antenna system, a base station, and a beam forming method. The antenna includes an array antenna, a feeding network, and an antenna port. The array antenna includes a plurality of radiating elements. Each output of each feeding network is connected to at least one radiating element in the array antenna. Each input of each feeding network is connected to the antenna port. Each feeding network has one input and two outputs, and one of the two outputs includes a phase shifter. The phase shifter has a first operating state to increase the coverage space of beam forming.

Abstract: Embodiments of this application disclose an antenna calibration method and system. The system includes a baseband processing unit, a remote radio unit, an antenna array, and a coupled antenna. The antenna array sends a radio frequency calibration signal sent by the baseband processing unit, or receive the radio frequency calibration signal. The remote radio unit provides a plurality of transmission channels, where the plurality of transmission channels correspond to a plurality of transmission ports. The coupled antenna receives the radio frequency calibration signal sent by the baseband processing unit, and transmit a coupled signal corresponding to the radio frequency calibration signal to the baseband processing unit, or send the radio frequency calibration signal. The baseband processing unit calibrates, based on a difference between the radio frequency calibration signal and the coupled signal, a plurality of to-be-sent baseband signals corresponding to the plurality of transmission channels.

Abstract: An antenna includes: at least three radio frequency interfaces and a feed network, where each of the radio frequency interfaces is connected to a radio frequency channel between the radio frequency interface and a RRU. A first interface is configured to receive a signal from the RRU, and transmit the signal to a second interface by using the feed network. The second interface is configured to send the signal to the RRU. The feed network includes a main feed circuit, a calibration signal circuit, and a switch. The calibration signal circuit is configured to transmit a calibration signal from the first interface to the second interface, where the calibration signal is used to calibrate a phase and an amplitude of the radio frequency channel connected to the first interface. The switch is configured to isolate the calibration signal from a signal on the main feed circuit.

Abstract: An antenna subarray and a base station antenna are disclosed. The antenna subarray includes a reflection plate, a plurality of radiation surfaces, and a ground plate of the plurality of radiation surfaces. The ground plate is vertically disposed on the reflection plate, and includes an integrated bottom end structure and a plurality of branch structures. The bottom end structure is connected to the reflection plate, and a top end of a branch structure is connected to a radiation surface. A feeder layer is disposed on a side of the ground plate, and a dielectric layer is spaced between the ground plate and the feeder layer. A first polarized feeder and a second polarized feeder are disposed on the feeder layer. The ground plate may have both a “ground” function of a polarized feeder and a “ground” function of a balun. The first polarized feeder and the second polarized feeder can implement both a function of a polarized feeder of the radiation surface and a function of a balun feeder.

Abstract: The present disclosure relates to antennas. One example antenna includes a reflective device, at least two radiating arrays whose operating bands are in a first preset frequency band, and a plurality of parasitic radiators. Each radiating array of the at least two radiating arrays includes a plurality of radiating elements. Each radiating array of the at least two radiating arrays is electrically disposed on the reflective device along a length direction of the reflective device, and the plurality of parasitic radiators are disposed between two adjacent radiating arrays in the at least two radiating arrays.

Abstract: An antenna includes a radiating element, a reflective baseplate, a metal enclosure frame, a first reflective surface, and a radiation cavity. The radiating element is on the reflective baseplate and is below the first reflective surface. The reflective baseplate is rectangular. A length of the reflective baseplate is greater than a width of the reflective baseplate. The metal enclosure frame is connected to and encircles the reflective baseplate. The metal enclosure frame includes four enclosure frame surfaces. The four enclosure frame surfaces include two first enclosure frame surfaces, and two second enclosure frame surfaces. The first enclosure frame surfaces are electrically connected to first sides of the reflective baseplate. The second enclosure frame surfaces are electrically connected to second sides of the reflective baseplate. The first sides are greater than the second sides. The first reflective surface includes a secondary reflective surface or a partially reflective surface.

Abstract: This application describes multi-band antenna systems and base stations. An example multi-band antenna system includes: a plurality of radiating element arrays, feeding networks separately corresponding to the plurality of radiating element arrays, at least one layer of a frequency selective surface (FSS), and a reflection panel. The plurality of radiating element arrays are located above the reflection panel. All or some of the plurality of radiating element arrays are stacked. The at least one layer of the FSS is located between the stacked radiating element arrays. A feeding network corresponding to at least one radiating element array in the stacked radiating element arrays is electrically connected to the at least one layer of the FSS, or the feeding network corresponding to the at least one radiating element array is integrated on the at least one layer of the FSS.

Abstract: This application provides an antenna system and a base station. The antenna system includes a radiation array, a transceiver (TRX) unit, and a filter bank. The radiation array includes a transmit antenna element group and a receive antenna element group that are separately disposed. The transmit antenna element group is configured to transmit a signal, and the receive antenna element group is configured to receive a signal. The TRX unit includes a transmit module and a receive module. The filter bank includes a first-type filter and a second-type filter. The first-type filter is connected between the transmit antenna element group and the transmit module, and the second-type filter is connected between the receive antenna element group and the receive module. The antenna system in this application can reduce interference between a passive intermodulation (PIM) signal generated by a transmitted signal and a received signal.

Abstract: The present disclosure relates to dual-band antennas and antenna arrays. One example dual-band antenna includes a first radiating element and a second radiating element that are disposed on a reflection plate. An operating frequency band of the first radiating element is a first frequency band, and an operating frequency band of the second radiating element is a second frequency band. A minimum frequency of the first frequency band is greater than a maximum frequency of the second frequency band. The first radiating element includes a first feeding apparatus and a first radiator unit, the first feeding apparatus includes a coupling structure coupled to the first radiator unit, and the first feeding apparatus is used for coupled feeding for the first radiator unit by using the coupling structure.

Abstract: 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.