An antenna (100) comprising a plurality of like antenna elements (10) is disclosed. Each antenna element comprises: a radiating element (12, 13); a feed point (14); and a short to ground (16). The elements are spaced apart in different positions and oriented in different directions. Also provided are a GNSS receiver module (150) comprising the antenna, and a method of manufacturing the antenna. The antenna may be used, in particular, for receiving a circularly polarised signal.

A polarization configurable patch antenna including a radiating layer, wherein the radiating layer has a corner truncated rectangular patch shape; and a feed capacitively coupled to the radiating layer for exciting the radiating layer, wherein the radiating layer is rotatable with respect to the feed, and the antenna is configured to generate a right-hand circularly polarized radiation field when the radiating layer is in a first rotational position and a left-hand circularly polarized radiation field when the radiating layer is in a second rotational position.

A patch antenna intended to equip a spacecraft, the antenna comprising a dielectric substrate, a radiating antenna element present on the dielectric substrate, the radiating antenna element having a center of symmetry and an area devoid of material, the center of symmetry being present in the area devoid of material, and a protective layer covering the radiating antenna element.

Disclosed are a single-frequency circular polarization positioning antenna and a wearable device. The single-frequency circular polarization positioning antenna includes an inverted F antenna and a parasitic antenna which are in an orthogonal layout; resonance is generated on the parasitic antenna through a coupling effect by means of feeding the inverted F antenna, so that the overall structure of the circular polarization antenna is simplified, and is achieved on a wearable product more easily. Therefore, the positioning antenna can better receive signals of a navigation satellite, and right hand circular polarization radiation generated by an annular radiating body can also filter left hand circular polarization navigation satellite signals reflected by high buildings or the ground, so as to reduce the multipath interference, thus effectively improving the positioning accuracy of the positioning antenna of the wearable device.

Circular patch antenna with integrated arc slots. In one embodiment, the circular patch antenna includes a top dielectric patch and a bottom dielectric patch. The top dielectric patch includes a first plurality of apertures while the bottom dielectric patch includes a second plurality of apertures. At least a portion of the first plurality of apertures and the second plurality of apertures are aligned with one another when the top dielectric patch is positioned over the bottom dielectric patch. A flex printed circuit board (PCB) is positioned between the top dielectric patch and the bottom dielectric patch and includes a plurality of arc slots, each of the plurality of arc slots are positioned between the first and second plurality of apertures and an external periphery of the flex PCB. Methods of operating the circular patch antenna as well as systems that incorporate the circular patch antenna are also disclosed.

An antenna module disposed on a substrate having a first and a second surface opposite to each other includes a microstrip line, a first radiator, a ground radiator and a ground plane. The microstrip line, the first radiator and the ground radiator are disposed on the first surface. The microstrip line includes a first and a second end opposite to each other. The first end includes a first feeding end. The first radiator is connected to the second end of the microstrip line. The ground radiator surrounds the microstrip line and the first radiator and has a first opening and two opposite grounding ends. The first end of the microstrip line is located in the first opening. A gap is formed between each grounding end and the first feeding end. The ground plane is disposed on the second surface. The ground radiator is connected to the ground plane.

An antenna comprising a ground plane, a composite radiation patch, and an excitation circuit is described herein. The composite radiation patch is disposed on a printed circuit board and comprises a conducting plate and a plurality of conductive strips. The composite radiation patch comprises an outer region and an inner region separated by a circle of a given radius. The conducting plate comprises 1) a first set of arcuate slots disposed on the circle and 2) a second set of slots each contacting an external perimeter of the conducting plate at one end and a corresponding slot of the first set of arcuate slots at another end. The plurality of conductive strips is disposed within the outer region of the composite radiation patch, with one or more of the plurality of conductive strips galvanically contacting the conducting plate. The excitation circuit is disposed on the printed circuit board for exciting a right hand circularly polarized wave. The excitation circuit comprises a plurality of microstrip lines and a feeding network to which the plurality of microstrip lines are connected.

A combined cellular/GNSS (global navigation satellite systems) antenna is provided. The combined cellular/GNSS antenna comprises an external area and an internal area delineated by a circumference of a circle. The combined cellular GNSS antenna further comprises a cellular antenna and a GNSS antenna. The cellular antenna comprises a set of cellular radiators disposed in the external area and connected to a cellular feeding network for excitation of the set of cellular radiators. The GNSS antenna comprises radiation elements disposed in the internal area and has a center located substantially at a center of the circle.

An antenna includes feed pads; a radiating portion disposed on one side of the feed pads and spaced apart from the feed pads, the radiating portion being constituted by a single conductor plate; and a ground part disposed on an opposite side of the feed pads from the radiating portion; wherein each of the feed pads has a polygonal shape.

The growing research interest in passive RFID (Radio Frequency Identification)-based devices and sensors in a diverse group of applications calls for flexibility in reader antenna performance. A low-cost, easy-to-fabricate, and pattern reconfigurable UHF (Ultra High Frequency) RFID reader antenna in the RFID ISM band (902-928 MHz in the US) may offer a 54 MHz bandwidth (890 944 MHz) and 8.9 dBi maximum gain. The reconfigurable antenna can radiate four electronically switchable radiation beams in the azimuth plane. The antenna may be LHCP (Left Hand Circularly Polarized) with axial ratio (AR) in the ranging from 0.45 dB to 7 dB in the RFID ISM band.