Abstract: There is provided a beam steerable antenna system including: an antenna array including a plurality of first radiating elements; a first phase control section coupled to the plurality of first radiating elements, the first phase control section being configured to control a phase of signals from the plurality of first radiating elements to output first phase controlled signals; a first combiner coupled to the first phase control section, the first combiner being configured to combine the first phase controlled signals to output a first combined signal; a first frequency converter coupled to the first combiner, the first frequency converter being configured to downconvert a frequency of the first combined signal to output a first downconverted signal; and a second phase control section coupled to the first frequency converter, the second phase control section being configured to control a phase of the first downconverted signal to output a second phase controlled signal.

Abstract: A compact wideband single feed circularly polarized antenna is provided. The circularly polarized antenna may include a ground plane. The circularly polarized antenna may include a radiating patch with an embedded ring-shaped slot. The circularly polarized antenna may include a via that shorts a round section of the radiating patch surrounded by the ring-shaped slot to the ground plane. The circularly polarized antenna may include a coaxial feed. The inner conductive material of the coaxial feed may be connected to the radiating patch and the outer conductive material of the coaxial feed may touch the ground plane. The circularly polarized antenna may include a slit-slotted parasitic square patch.

Abstract: There is provided an antenna structure for a radio frequency identification (RFID) reader. The antenna structure includes a substrate, and an antenna structure disposed on the substrate. The antenna includes a peripheral frame portion, a first strip section disposed at a first side of the peripheral frame portion, and a second strip section disposed at a second side of the peripheral frame portion. In particular, the first strip section and the second strip section each includes multiple spaced-apart strip portions extending from a first part of the peripheral frame portion to a second part of the peripheral frame portion. There is also provided a method of manufacturing the antenna structure, an RFID reader system including the antenna structure, and an RFID system including the RFID reader system and an RFID tag.

Abstract: There is provided a beam steerable antenna system including: an antenna array including a plurality of first radiating elements; a first phase control section coupled to the plurality of first radiating elements, the first phase control section being configured to control a phase of signals from the plurality of first radiating elements to output first phase controlled signals; a first combiner coupled to the first phase control section, the first combiner being configured to combine the first phase controlled signals to output a first combined signal; a first frequency converter coupled to the first combiner, the first frequency converter being configured to downconvert a frequency of the first combined signal to output a first downconverted signal; and a second phase control section coupled to the first frequency converter, the second phase control section being configured to control a phase of the first downconverted signal to output a second phase controlled signal.

Abstract: Various embodiments may relate to an antenna. The antenna may include a substrate. The antenna may further include a radiator in contact with the substrate, the radiator including a plurality of grid cells. The antenna may also include a ground structure spaced from the radiator, the ground structure including a plurality of apertures. The antenna may additionally include a plurality of feeding couplers connected to the radiator, each of the plurality of feeding couplers passing through a respective aperture of the plurality of apertures.

Abstract: A compact wideband single feed circularly polarized antenna is provided. The circularly polarized antenna may include a ground plane. The circularly polarized antenna may include a radiating patch with an embedded ring-shaped slot. The circularly polarized antenna may include a via that shorts a round section of the radiating patch surrounded by the ring-shaped slot to the ground plane. The circularly polarized antenna may include a coaxial feed. The inner conductive material of the coaxial feed may be connected to the radiating patch and the outer conductive material of the coaxial feed may touch the ground plane. The circularly polarized antenna may include a slit-slotted parasitic square patch.

Abstract: There is provided an antenna structure for a radio frequency identification (RFID) reader. The antenna structure includes a substrate, and an antenna structure disposed on the substrate. The antenna includes a peripheral frame portion, a first strip section disposed at a first side of the peripheral frame portion, and a second strip section disposed at a second side of the peripheral frame portion. In particular, the first strip section and the second strip section each includes multiple spaced-apart strip portions extending from a first part of the peripheral frame portion to a second part of the peripheral frame portion. There is also provided a method of manufacturing the antenna structure, an RFID reader system including the antenna structure, and an RFID system including the RFID reader system and an RFID tag.

Abstract: An antenna structure for providing a broadband circularly polarized radiation. The antenna structure comprises a feed line layer having an input portion and a first radiating patch layer stacked adjacent to the feed line layer. The feed line layer is shaped and dimensioned as an open loop having an input portion and signals are feedable to the feed line layer via the input portion. The first radiating patch layer has a reference origin defined thereon. The antenna structure also comprises a plurality of probes disposed between the feed line layer and the first radiating patch layer for coupling therebetween. The signals are feedable to the first radiating patch layer via the plurality of probes and each of the plurality of probes are positioned about the reference origin of the radiating patch layer along the length of the feed line layer.

Abstract: In accordance with an embodiment of the invention, there is disclosed an antenna for radio frequency identification. The antenna comprises a first radiating element for operating a first mode of radio frequency identification using a first current. The antenna further comprises a second radiating element for operating a second mode of radio frequency identification using a second current. Specifically, at least one of a portion of the first radiating element forms a portion of the second radiating element and a portion of the second radiating element forms a portion of the first radiating element. When the first radiating element is excited by the first current, the first radiating element generates a first field for providing the first mode of radio frequency identification, and when the second radiating element is excited by the second current, the second radiating element generates a second field for providing the second mode of radio frequency identification.

Abstract: An antenna for radio frequency identification is disclosed. The antenna comprises a first radiating element having at least one loop element and a second radiating element spatially displaced from the first radiating element and having at least two interconnected loop elements. The antenna further comprises a coupler for electrically coupling the first and second radiating elements. Specifically, when a first current flows in the first radiating element for generating a first magnetic field and a second current flows in the second radiating element for generating a second magnetic field, one of the first and second magnetic fields superimposes the other of the first and second magnetic fields for generating an interrogation region in the near field of the first and second radiating elements.