9results about "Collapsible/retractable loop antennas" patented technology

A retrofittable enclosure for storing a deployable antenna 120 on the outer surface of an underwater vessel 160 (e.g submarine, AUV), the retrofittable enclosure comprising: a protective housing 110 f

An antenna for charging and measurement may comprise: a telescopic support installed at a lower portion of an aerial vehicle and configured to contract when the aerial vehicle lands on a wireless station and extend when the aerial vehicle takes off from the wireless station; and an antenna coil part deformed into a spiral shape when the telescopic support is contracted so that the wireless station receives wireless power and deformed into a conical shape when the telescopic support is extended to measure a radio signal.

The invention relates to a hand-held device for detecting electrostatic discharges, comprising an evaluation unit and a cable antenna (1; the invention relates to a cable antenna (1, 1 '), the cable antenna being formed in a coil-like manner with a number n of windings (2, 2'), where n > = 2, each winding (2, 2 ') being wound about a winding axis, each winding having a diameter of less than 30 cm, and the windings of the cable antenna being preferably spaced apart from one another by at least one spacer.

The application discloses a high-orbit LS dual-frequency full-polarization SAR system based on a ring-shaped reflector antenna, which comprises a dual-frequency radar central control processor, an LS dual-frequency common-aperture full-polarization feed array, a ring-shaped antenna reflector, an L-band full-polarization receiver and an S-band full-polarization receiver. The application has L and S dual-frequency bands and full-polarization ground imaging capability, and dual-frequency band data can be used for ionosphere measurement and ground surface deformation monitoring, thereby improving the application efficiency and competitiveness of the high-orbit SAR system.

The present invention relates to an in-vivo introducible antenna for detecting RF tags and provides an interrogation and detection system for detecting surgical instruments within a patient's body, the system comprising: one or more RFID tags attached to surgical instruments within the patient's body. Each RFID tag is configured to emit a return signal upon energization, and a remote signal generator is configured to generate an energization signal for the one or more RFID tags. The signal generator is operably coupled to an in-vivo introducible antenna via a communication cable. The system further comprises an in-vivo introducible antenna configured to be inserted into a surgical site within the patient's body through a trocar-cannula assembly. Wherein the tubular channel defines a shape having a dimension "D1" such that the dimension "D1" of the tubular channel is less than a dimension "D2" of the in-vivo introducible antenna.

The present invention is directed to a handheld device for the detection of electrostatic discharge, comprising an evaluation unit, and a cable antenna, wherein the cable antenna is formed in a coil-like manner with a number n of windings, with n≥2, each winding being wound around a winding axis, a diameter of each winding is less than 30 cm, and the windings of the cable antenna are spaced apart from each other, preferably by means of at least one spacer.

The present invention is directed to a handheld device for the detection of electrostatic discharge, comprising an evaluation unit, and a cable antenna (1,1') made of coaxial cable, wherein the cable antenna is formed in a coil-like manner with a number n of windings (2, 2'), with n >_ 2, each winding (2, 2') being wound around a winding axis, a diameter of each winding is less than 30 cm, and the windings of the cable antenna are spaced apart from each other, preferably by means of at least one spacer.

A communication device, method and computer program product enable satellite communication via a patch antenna incorporated into an extendable display device. A flexible display support structure moveably attached to and positionable on a base housing between retracted and extended positions. One of the flexible display support structure and the base housing has an antenna surface that is covered by the other one while the flexible display support structure is retracted and uncovered while extended. A flexible display is coupled across a front side of the base housing and the flexible display support structure to present a larger portion while extended and a smaller portion while retracted. A patch antenna is positioned on the antenna surface. The patch antenna includes a ground plane, a substrate comprising a low dielectric constant and low loss material and positioned on the ground plane, and a conductive radiator patch positioned on the substrate.

The present invention relates to a handheld device for detecting electrostatic discharge, comprising an evaluation unit and a cable antenna (1;1') made from a coaxial cable, wherein the cable antenna is formed in a coil shape having n windings (2;2') with n≧2, each winding (2;2') is wound around a winding axis, each winding has a diameter of less than 30 cm, and the windings of the cable antenna are preferably separated from each other by at least one spacer.