摘要:
A system, comprising a camera and a housing comprising a slot. The slot is adapted to receive at least a portion of a printed paper item, an image of which is acquired by the camera. The system also comprises logic that performs optical character recognition on the image.
摘要:
An antenna apparatus (10) includes an antenna element (12, 412, 512) that has conductive material with a recess therein. The recess includes a balun hole (36, 536), and a tapered slot (37, 537) communicating at its narrow end with the balun hole. The balun hole is approximately rectangular, has a peripheral edge defined by conductive material, and contains air. The tapered slot has a shape which is optimized as a function of factors that include the balun hole design. Each slot edge follows a predetermined curve other than a first-order exponential curve.
摘要:
A cable locking system is provided. The cable lock system 100 includes a base member 110 having at least one aperture 120, a device latch 130, a cable latch 140, and a lock assembly 150 that is operably connected to the device latch and the cable latch. A device 610 can be detachably attached to the device latch. A cable 300 can be detachably attached to the cable latch. The cable latch can be disposed proximate the at least one aperture. The lock assembly can have at least three modes.
摘要:
A cable locking system is provided. The cable lock system 100 includes a base member 110 having at least one aperture 120, a device latch 130, a cable latch 140, and a lock assembly 150 that is operably connected to the device latch and the cable latch. A device 610 can be detachably attached to the device latch. A cable 300 can be detachably attached to the cable latch. The cable latch can be disposed proximate the at least one aperture. The lock assembly can have at least three modes.
摘要:
Disclosed herein is a patch antenna comprises a planar conductive patch attached to a ground plane by a support member, and a probe connector in electrical communication with the conductive patch arranged to conduct electromagnetic energy to or from the conductive patch, wherein the conductive patch is disposed essentially parallel to the ground plane and is separated from the ground plane by a spacing distance; wherein the support member comprises a plurality of sides disposed about a central axis oriented perpendicular to the conductive patch and the ground plane; wherein the conductive patch is solely supported above the ground plane by the support member; and wherein the support member provides electrical communication between the planer conductive patch and the ground plane.
摘要:
An antenna element (10) has two dielectric layers (12, 13), which separate three ground planes (17, 18, 21, 22, 23). The three ground planes have respective slots (26, 27, 28), which collectively define a slotline communicating at an inner end with a balun hole (57) that extends through all of the ground planes and dielectric layers. Two capacitive switches (121) are supported within the balun hole, and each have terminals respectively coupled to the same ground plane on opposite sides of the balun hole. The capacitive switches are independently and selectively operated to dynamically vary the impedance characteristic of the overall balun structure that includes the balun hole and two switch assemblies, and which gives the antenna element good electrical performance over a wide bandwidth. The antenna element includes a stripline (36), and a stripline to a slotline transition exists at the end of the slotline adjacent the balun hole.
摘要:
An antenna apparatus (10) includes an antenna element (12, 412, 512) that has conductive material with a recess therein. The recess includes a balun hole (36, 536), and a tapered slot (37, 537) communicating at its narrow end with the balun hole. The balun hole is approximately rectangular, has a peripheral edge defined by conductive material, and contains air. The tapered slot has a shape which is optimized as a function of factors that include the balun hole design. Each slot edge follows a predetermined curve other than a first-order exponential curve.
摘要:
An antenna apparatus (10) includes an antenna element (12, 412, 512) that has conductive material with a recess therein. The recess includes a balun hole (36, 536), and a tapered slot (37, 537) communicating at its narrow end with the balun hole. The balun hole is approximately rectangular, has a peripheral edge defined by conductive material, and contains air. The tapered slot has a shape which is optimized as a function of factors that include the balun hole design. Each slot edge follows a predetermined curve other than a first-order exponential curve.