Class / Patent application number | Description | Number of patent applications / Date published |
343769000 | Ring-shaped slot | 8 |
20110134006 | Broadband circularly polarized annular ring slot antenna - A broadband circularly polarized annular ring slot antenna is disclosed, which includes a substrate, an annular ring slot antenna portion located on the upper surface of the substrate, and a microstrip feeding portion located on the lower surface of the substrate. The annular ring slot antenna portion includes a grounding unit, an annular ring slot unit, a central metal unit, a first perturbation metal unit and a second perturbation metal unit. The first perturbation metal unit and the second perturbation metal unit are extended from the grounding unit, towards the central metal unit, respectively. The microstrip feeding portion includes a vertical feeding unit, a bent feeding unit and a rectangular microstrip unit. | 06-09-2011 |
20120223868 | SLOT ANTENNA - A slot antenna is formed on a base. The base includes a first surface and an opposite second surface. The slot antenna includes a feeding portion formed on the first surface, a ground portion and a radiating portion formed on the second surface. The radiating portion includes a first radiating body being surrounded by a first slot, a second radiating body being surrounded by a second slot, a first switch and a second switch. The first switch is set between the first radiating body and the ground portion. The second switch is set between the second radiating body and the ground portion. | 09-06-2012 |
20120223869 | MICROSTRIP PATCH ANTENNA INCLUDING PLANAR METAMATERIAL AND METHOD OF OPERATING MICROSTRIP PATCH ANTENNA INCLUDING PLANAR METAMATERIAL - Provided is a microstrip patch antenna in which a unit cell of a planar metamaterial may be inserted to have a miniaturized size, a wide bandwidth, or multi-resonance. | 09-06-2012 |
20130278475 | Annular Slot Antenna - An annular slot antenna includes an inner conductor divided by a dielectric gap into a rear section and a front section. An inner conductor of a coaxial feed line is contacted with the front section of the inner conductor and the outer conductor of the coaxial feed line is contacted with the rear section. | 10-24-2013 |
20130321227 | Waveguide Antenna Having Annular Slots - A slotted waveguide antenna element s provided, which includes at least one conductive surface provided with at least one annular slot, which defines at the central portion thereof a conductive zone and which electrically insulates the zone from the rest of the surface. | 12-05-2013 |
20160020521 | Global Navigation Satellite System Antenna with a Hollow Core - Disclosed is a dual-band Global Navigation Satellite System antenna with a hollow core. The antenna includes a conductive cylindrical tube with a longitudinal axis. A ground plane, a low-frequency radiator, and a high-frequency radiator are annuli orthogonal to the longitudinal axis. The inner peripheries of the ground plane and the low-frequency radiator are electrically connected to the outer surface of the cylindrical tube. The outer periphery of the high-frequency radiator is electrically connected to the low-frequency radiator. A vertical low-frequency radiating gap is configured between the ground plane and the outer periphery of the low-frequency radiator. A horizontal high-frequency radiating gap is configured between the inner periphery of the high-frequency radiator and the outer surface of the cylindrical tube. In an embodiment, the inner diameter of the cylindrical tube has a value from about 27 mm to about 102 mm, permitting insertion of a post or pole. | 01-21-2016 |
20160056542 | OPEN WAVEGUIDE BEAMFORMING ANTENNA FOR RADIO FREQUENCY IDENTIFICATION READER - An open waveguide antenna for a radio frequency identification reader includes a conductive annular waveguide concentric about an axis and configured for operation within an operating frequency band. A radiating slot is formed in at least one wall of the waveguide is also concentric about the axis. An odd-multiple of ports are electrically coupled to the annular waveguide, where the ports are equally spaced around the waveguide at a spacing between adjacent ports of one-half of a guided wavelength at a center frequency of the operating band. A second waveguide, smaller than the first, can also be incorporated. The second waveguide can have a different slot arrangement and fewer ports. The rectangular waveguides can operate in a non-transverse electromagnetic mode, and the ports can be individually driven to beamform the radiated signal of the antenna. | 02-25-2016 |
20160204513 | BROADBAND PLANAR ANTENNA | 07-14-2016 |