An electronic device is provided. The electronic device includes a housing including a first housing and a second housing, a flexible display, at least one contact structure, a first processor, and a first ultrawide band (UWB) antenna, a second UWB antenna, a third UWB antenna, and a fourth UWB antenna, and, in a first state, the first processor may transmit and/or receive a signal of a designated frequency band, based on at least two of the first UWB antenna and the second UWB antenna, and the third UWB antenna, and, in a second state, the first processor may transmit and/or receive a signal of a designated frequency band, based on at least two of the first UWB antenna and the second UWB antenna, and the fourth UWB antenna which is disposed in the flexible display.

The disclosed antenna includes: a radiating element disposed in a radiating plane transverse to an axis of the antenna; a reflecting plane, which is transverse to the axis, the radiating plane being located at a predetermined height above the reflecting plane; and a substrate, interposed between the radiating plane and the reflecting plane, and having a constant thickness. This antenna is characterized by a local relative electrical permittivity of the substrate that is a function of the radius, i.e. the distance to the axis, and a height, i.e. a distance to the reflecting plane, the local relative electrical permittivity being, at constant height, increasing as a function of the radius, and, at constant radius, increasing as a function of the height at least for a portion of the substrate in the vicinity of the reflecting plane.

A signal shielding and transmitting case with a length-adjustable antenna comprises a remote control part, a signal shielding case, and a PCB and an antenna driving part arranged in the signal shielding case, wherein a control line penetrates through the antenna driving part and is fixedly connected to a signal transmitting antenna, and the remote control part can control the length of the signal transmitting antenna stretching out of the signal shielding case based on the gear lever principle to allow users to adjust the intensity of signals transmitted by the signal transmitting antenna freely.

A rollable antenna mat for sports timing comprises one or more planar antenna structures connected to one or more transmission lines for conveying signals to and/or from the one or more planar antenna structures. Each of the one or more planar antenna structures comprises a conductive plate positioned above a conductive ground plane. A spacer element is positioned between the conductive ground plane and the conductive plate. The planar antenna structure is configured to generate a radiation field having a main axis that is substantially perpendicular to the conductive plate. The planar antenna structure and a transmission line is embedded in a flexible elongated sheet structure of one or more elastomeric materials, and comprises the embedded one or more planar antenna structures being suitable to be rolled up in a roll, the axis of the roll being substantially perpendicular to the longitudinal axis of the flexible elongated sheet structure.

An example system for extraterrestrial deployment of a flexible membrane surface includes a flexible membrane having a periphery and an interior. The flexible membrane is rolled about a roll axis into a cylindrical geometric shape in an undeployed state. A payload base has extendable radial booms, wherein the distal end of each extendable radial boom is attached to the periphery of the flexible membrane and the interior of the flexible membrane is free of attachment to the extendable radial booms. The payload base and the extendable radial booms are positioned to one side of the flexible membrane along the roll axis. The extendable radial booms are configured to extend orthogonally to the roll axis from the payload base to unroll the flexible membrane about the roll axis to form the flexible membrane surface in a deployed state, wherein the roll axis is substantially orthogonal to the flexible membrane surface.

An antenna having a reflector mounted on a rigid boom uses a line feed or phased array feed to operate in the Ka band with frequencies up to 36 gigahertz while maintaining the ability to operate at frequencies down to L-Band of 1-2 GHz.

A mast assembly (10), a method of deploying a mast (20), a slit locking clamp (50) for a mast and to a support assembly (14) for an extendible member (20) are provided. The mast assembly (10) comprises an extendible mast (20) configurable between a coiled form and an extended form. When extended the mast is resiliently biased in the form of an elongate tube having a slit along its length defined by longitudinal edges of the mast. When coiled the mast is opened out at the slit to a flattened cross section and wound about an axis extending transversely to the longitudinal extent of the mast. A slit locking clamp (50) clamps across the slit in the mast at a position along the length of the mast so as to stabilise one edge relative to the other.

An antenna having a reflector mounted on a rigid boom uses a line feed or phased array feed to operate in the Ka band with frequencies up to 36 gigahertz while maintaining the ability to operate at frequencies down to L-Band of 1-2 GHz.

An antenna assembly and related methods are described. The antenna assembly (1) comprises an extendible mast (2) constructed and arranged so as to be configurable between a coiled form and an extended form. The extended mast (2) is resiliently biased in the form of an elongate tube having a slit along its length. The coiled mast is wound about an axis extending transversely to the longitudinal extent of the mast. An antenna (6) is integrally coupled to the mast such that when extended, the mast supports and positions the antenna, and when coiled, the mast and antenna are coiled together.

Systems, devices, and methods for precision boom deployment are provided in accordance with various embodiments. The tools and techniques provided may have space and/or terrestrial applications. Some embodiments include a boom deployment system that may include a furlable boom. Some embodiments include: boom reinforcement devices, end fitting devices, contoured support devices, edge support devices, spiral harness devices, latch devices, combined boom spool and tension drive devices, and/or rotary encoder devices. Some embodiments may utilize a composite slit-tube boom. Some embodiments utilize a furlable boom that may be fabricated with curvature along its length.