Abstract: Disclosed are exemplary embodiments of antennas that may be configured to be low profile, omnidirectional, ceiling mountable, and/or multiple-input multiple-output (MIMO). In an exemplary embodiment, an antenna generally includes first and second radiators and a ground plane. First and second edge portions of the ground plane may configured to be operable for reducing null at azimuth plane to thereby allow the antenna to have more omnidirectional radiation patterns for the azimuth plane. The antenna may be configured to have an asymmetrical perpendicular dipole configuration. A neutral line may be spaced apart from and proximity coupled to the ground plane. The ground plane may comprise first and second ground plane extension arms and/or a slant cutout defined between spaced-apart first and second lower portions of the ground plane. The ground plane may include a bridge portion extending between the spaced-apart first and second lower portions of the ground plane.

Abstract: According to various aspects, exemplary embodiments are disclosed of antennas, which may be configured to be low profile, ultra-wideband, and/or omnidirectional. In an exemplary embodiment, an antenna may be low profile and may be configured to be operable omnidirectionally within an ultra-wideband frequency range including frequencies from about 350 megahertz to about 6000 MHz. The antenna may include a printed circuit board (PCB) having a first side and a second side opposite the first side. The first side of the PCB may include a radiating element, a first patch with an additional radiating arm, a shorting line, a stub along the shorting line, and a microstrip line. The second side of the PCB may include a ground plane and a second patch.

Abstract: Disclosed herein are various exemplary embodiments of omnidirectional multiband symmetrical dipole antennas.

Abstract: Exemplary embodiments are provided of antennas and antenna systems including the same. In an exemplary embodiment, an antenna generally includes an upper radiating patch element, a ground plane spaced apart from the upper radiating patch element, and a feed point positioned adjacent the ground plane. A first feeding element electrically couples (e.g., via proximity coupling or direct galvanic coupling) the upper radiating patch element to the feed point. A second feeding element electrically couples (e.g., via proximity coupling or direct galvanic coupling) the upper radiating patch element to the feed point. A shorting element electrically couples (e.g., via proximity coupling or direct galvanic coupling) the upper radiating patch element to the ground plane. In other exemplary embodiments, the antenna systems include one or more ground planes and one or more antennas.

Abstract: According to various aspects, exemplary embodiments are disclosed of antenna systems. In an exemplary embodiment, an antenna system generally includes a ground plane and first and second antennas. A first isolator is disposed between the first and antennas. A second isolator extends outwardly from the ground plane. The antenna system is configured to be operable with low passive intermodulation.

Abstract: Exemplary embodiments are disclosed of antennas, antenna systems, and methods of making antennas. In an exemplary embodiment, an antenna generally includes a ground plane and first and second antennas each including a first feed. The antenna system further comprises a neutral line having first and second end portions coupled to the first feed of the respective first and second antennas, and/or one or more decoupling stubs integrally formed from and extending outwardly relative to the ground plane. In another exemplary embodiment, a method of improving isolation between first and second antennas of an antenna system generally includes coupling first and second end portions of a neutral line to a first feed of the respective first and second antennas, and/or integrally forming one or more decoupling stubs from a ground plane.

Abstract: Exemplary embodiments are disclosed of multiport multiband vehicular antenna assemblies. In exemplary embodiments, a multiport multiband antenna assembly may include multiple ports (e.g., three, four, or five ports, etc.) with different combinations of antennas or radiators operable over various frequencies, such as one or more cellular frequencies (e.g., Long Term Evolution (LTE), etc.), internet frequencies (e.g., Wi-Fi, Wi-Fi ISM, etc.), satellite navigation frequencies (e.g., Global Positioning System (GPS), Global Navigation Satellite System (GLONASS), etc.), and/or other frequencies. For example, a multiport multiband antenna assembly may include radiators or antennas operable with LTE, WI-FI, GPS (and/or with other cellular, internet, and/or satellite navigation frequencies) where the radiators or antennas are located and/or part of a single antenna system, e.g.

Abstract: Disclosed are exemplary embodiments of a low profile wideband and/or multiband omnidirectional antennas. In an exemplary embodiment, an antenna generally includes a radiator and a ground plane. The ground plane may include a slanted surface along or defining an edge portion of the ground plane. The slanted surface may be configured to be operable for reducing null at azimuth plane to thereby allow the antenna to have more omnidirectional radiation patterns for the azimuth plane. In another exemplary embodiment, an antenna generally includes a substrate, a radiator along the substrate, and electrically-conductive tape or foil defining at least part of a ground plane. The electrically-conductive tape or foil is coupled to a ground of the radiator via proximity coupling and electrically insulated by masking of the substrate.

Abstract: Disclosed are exemplary embodiments of antennas that may be configured to be low profile, omnidirectional, ceiling mountable, and/or multiple-input multiple-output (MIMO). In an exemplary embodiment, an antenna generally includes first and second radiators and a ground plane. First and second edge portions of the ground plane may configured to be operable for reducing null at azimuth plane to thereby allow the antenna to have more omnidirectional radiation patterns for the azimuth plane. The antenna may be configured to have an asymmetrical perpendicular dipole configuration. A neutral line may be spaced apart from and proximity coupled to the ground plane. The ground plane may comprise first and second ground plane extension arms and/or a slant cutout defined between spaced-apart first and second lower portions of the ground plane. The ground plane may include a bridge portion extending between the spaced-apart first and second lower portions of the ground plane.

Abstract: Disclosed are exemplary embodiments of omnidirectional single-input single-output (SISO) multiband/broadband antennas. In an exemplary embodiment, an omnidirectional SISO multiband/broadband antenna generally includes a radiator element having a single piece construction with a stamped cone shape defined by multiple stamped portions.

Abstract: An exemplary embodiment of an multiband antenna assembly includes a printed circuit board having a plurality of elements thereon. The plurality of elements may include a radiating element, a matching element, a feed element configured to be operable as a feeding point for the multiband antenna assembly, and a shorting element configured to be operable for electrically shorting the radiating element to ground. The antenna assembly may be operable within at least a first frequency range and a second frequency range different than the first frequency range without requiring any matching lump components coupled to the printed circuit board.

Abstract: Exemplary embodiments are disclosed of multiport multiband vehicular antenna assemblies. In exemplary embodiments, a multiport multiband antenna assembly may include multiple ports (e.g., three, four, or five ports, etc.) with different combinations of antennas or radiators operable over various frequencies, such as one or more cellular frequencies (e.g., Long Term Evolution (LTE), etc.), internet frequencies (e.g., Wi-Fi, Wi-Fi ISM, etc.), satellite navigation frequencies (e.g., Global Positioning System (GPS), Global Navigation Satellite System (GLONASS), etc.), and/or other frequencies. For example, a multiport multiband antenna assembly may include radiators or antennas operable with LTE, WI-FI, GPS (and/or with other cellular, internet, and/or satellite navigation frequencies) where the radiators or antennas are located and/or part of a single antenna system, e.g.

Abstract: Exemplary embodiments are disclosed of antennas, antenna systems, and methods of making antennas. In an exemplary embodiment, an antenna generally includes a ground plane and first and second antennas each including a first feed. The antenna system further comprises a neutral line having first and second end portions coupled to the first feed of the respective first and second antennas, and/or one or more decoupling stubs integrally formed from and extending outwardly relative to the ground plane. In another exemplary embodiment, a method of improving isolation between first and second antennas of an antenna system generally includes coupling first and second end portions of a neutral line to a first feed of the respective first and second antennas, and/or integrally forming one or more decoupling stubs from a ground plane.

Abstract: Disclosed herein are various exemplary embodiments of omnidirectional multiband symmetrical dipole antennas.

Abstract: Disclosed are exemplary embodiments of a low profile wideband and/or multiband omnidirectional antennas. In an exemplary embodiment, an antenna generally includes a radiator and a ground plane. The ground plane may include a slanted surface along or defining an edge portion of the ground plane. The slanted surface may be configured to be operable for reducing null at azimuth plane to thereby allow the antenna to have more omnidirectional radiation patterns for the azimuth plane. In another exemplary embodiment, an antenna generally includes a substrate, a radiator along the substrate, and electrically-conductive tape or foil defining at least part of a ground plane. The electrically-conductive tape or foil is coupled to a ground of the radiator via proximity coupling and electrically insulated by masking of the substrate.

Abstract: Exemplary embodiments are provided of antennas and antenna systems including the same. In an exemplary embodiment, an antenna generally includes a substrate, a radiating element along the substrate, and a ground element along the substrate. The radiating element includes a high band radiating arm and a low band radiating arm. The antenna may further include one or more resistors for separately controlling peak gain for the high and low bands. Additionally, or alternatively, the antenna may include a ground plane arm along the substrate and a waveguide coplanar transmission line along the substrate for feeding the radiating element. The antenna may comprise a printed circuit board (PCB) dipole antenna. In another exemplary embodiment, an antenna system generally includes first and second PCB dipole antennas. Each PCB dipole antenna may include a high band radiating element or arm and a low band radiating element or arm.

Abstract: Disclosed are exemplary embodiments of omnidirectional broadband antennas and capacitively grounded cable brackets. In an exemplary embodiment, an omnidirectional broadband antenna generally includes a ground element, an antenna element, an annular element, and a cable bracket capacitively grounded to the ground element. The cable bracket is configured to allow soldering of a cable braid to the cable bracket for feeding the antenna element without direct galvanic contact between the cable braid and the ground element.

Abstract: An antenna generally includes at least two feeds and at least one open side defined between the at least two feeds. A feed point is between and/or connected to the at least two feeds. The antenna also includes shorting legs for mechanical support and electrically coupling to a ground plane.

Abstract: Exemplary embodiments are provided of antennas and antenna systems including the same. In an exemplary embodiment, an antenna generally includes an upper radiating patch element, a ground plane spaced apart from the upper radiating patch element, and a feed point positioned adjacent the ground plane. A first feeding element electrically couples (e.g., via proximity coupling or direct galvanic coupling) the upper radiating patch element to the feed point. A second feeding element electrically couples (e.g., via proximity coupling or direct galvanic coupling) the upper radiating patch element to the feed point. A shorting element electrically couples (e.g., via proximity coupling or direct galvanic coupling) the upper radiating patch element to the ground plane. In other exemplary embodiments, the antenna systems include one or more ground planes and one or more antennas.

Abstract: According to various aspects, exemplary embodiments are disclosed of ground independent multi-band antenna assemblies. In an exemplary embodiment, a ground independent multi-band antenna assembly is operable within at least a first frequency range and a second frequency range different than the first frequency range. The antenna assembly generally includes an annular ground element, a feed element, a patch element, and a high band element. The feed element includes a feeding point and a shorting point electrically connected to the annular ground element. The patch element is electrically shorted to the annular ground element by the feed element. The high band element is electrically connected to the feed element.