Provided is a dual-polarized antenna. The dual-polarized antenna includes a horizontal radiating unit and a vertical radiating unit. The horizontal radiating unit includes a power divider and a Vivaldi oscillator array. The Vivaldi oscillator array includes multiple Vivaldi oscillator units uniformly distributed in a circumferential direction of the Vivaldi oscillator array. The power divider includes multiple output ports in one-to-one correspondence with the multiple Vivaldi oscillator units. The multiple output ports of the power divider are coupled to the multiple Vivaldi oscillator units in a one-to-one correspondence. The vertical radiating unit is disposed on one side of the horizontal radiating unit and includes a vertically-polarized oscillator.

A measuring instrument having an antenna element coupled to the measuring instrument is disclosed. The measuring instrument includes a planar substrate with an antenna connector coupled to the planar substrate and further coupled to the antenna element. At least a portion of the planar instrument comprises indicia wherein said indicia collectively forms the measuring instrument.

A microstrip line filtering radiation oscillator, a filtering radiation unit, and an antenna, the oscillator includes a substrate. A plurality of first metal sheets parallel to each other are arranged at intervals on a front surface of the substrate, a plurality of second metal sheets parallel to each other are arranged at intervals on a back surface of the substrate, and the first and second metal sheets are correspondingly staggered and coupled by a coupling part running through the substrate. The microstrip line filtering radiation oscillator has functions of signal radiation and interference suppression. The filtering radiation unit includes at least one oscillator and can be used in conjunction with a high-frequency radiation unit, to radiate high-frequency and low-frequency signals simultaneously. The antenna includes at least one filtering radiation unit, and can transmit low-frequency and high-frequency signals simultaneously, thereby effectively improving the integration and reducing the volume of the antenna.

A wirelessly triggered device for implantation in vivo is disclosed herein. In a described embodiment, the wirelessly triggered device comprises an electrically conductive suture; and an electronic circuit coated with a biocompatible encapsulating material and communicatively coupled to the electrically conductive suture, the electronic circuit arranged to convert a received wireless triggering signal into an electrical signal for passing through the conductive suture. A reader for use with the device and an electrically conductive surgical thread is also disclosed, among other aspects.

Provided herein is a deployable antenna assembly, a method of deploying an antenna, and systems and methods for sequentially deploying an extendable structure. The deployable antenna assembly includes an extendable pillar configured to extend in an axial direction along a deployment axis of the deployable antenna assembly to deploy an antenna. The extendable pillar includes at least one extendable element configured to convert between a stowed configuration and a deployed configuration where the deployed configuration is longer in the axial direction than the stowed configuration. The extendable pillar also includes a launcher configured to initiate conversion of the plurality of extendable elements from the stowed configuration to the deployed configuration, thereby extending the extendable pillar and deploying the antenna.

An antenna system includes a lens portion that has a spherical surface, and an antenna feed structure coupled to a surface of the lens portion. The antenna feed structure includes one or more feed tiles supported by an electrical connectivity layer conforming to the spherical surface. The antenna system also includes one or more offset structures positioned between the one or more feed tiles and an outer surface of the antenna system.

An antenna system includes a lens portion that has a spherical surface, and an antenna feed structure coupled to a surface of the lens portion. The antenna feed structure includes one or more feed tiles supported by an electrical connectivity layer conforming to the spherical surface. The antenna system also includes one or more offset structures positioned between the one or more feed tiles and an outer surface of the antenna system.

An antenna device includes an antenna surface on which an antenna conductor is provided, a ground surface which is opposed to the antenna surface and on which a ground conductor is provided, and a stub configured by connecting, in series, a plurality of transmission lines in which a line width of at least a part of at least one transmission line is different from line widths of other two or more transmission lines. The at least one transmission line has straight portions and a bent portion.

An antenna device includes an antenna surface on which an antenna conductor is provided, a ground surface which is opposed to the antenna surface and on which a ground conductor is provided, and a stub configured by connecting, in series, a plurality of transmission lines in which a line width of at least a part of at least one transmission line is different from line widths of other two or more transmission lines. The at least one transmission line has straight portions and a bent portion.

A radio frequency identification (RFID) antenna is disclosed. The RFID antenna may include: a substrate; a radiator disposed on the substrate, the radiator comprising a first electrical conductor and a second electrical conductor that perpendicularly intersect a straight edge of the radiator, the first electrical conductor and the second electrical conductor being symmetrical to each other with respect to a central point of the radiator; a loop disposed on the substrate; and a stub disposed on the substrate between the loop and the central point of the radiator.