The disclosure relates to an array antenna, and specifically, relates to an array antenna which improves performance by using a shorting pin. The array antenna includes a first antenna, a second antenna, the first antenna and the second antenna sharing a ground, and a substrate disposed on an upper portion of the ground, and the second antenna is disposed in contact with an upper portion of the substrate, the first antenna is disposed by penetrating through centers of the substrate and the second antenna, the array antenna includes a plurality of feeding pins disposed by penetrating through the second antenna, the substrate, and the ground, and the array antenna includes a plurality of shorting pins penetrating through the second antenna, the substrate, and the ground to be symmetric with the plurality of feeding pins.

A dual-polarized antenna structure is provided. The dual-polarized antenna structure includes an insulating substrate, two first antennas, two second antennas, a coupling unit, and two feeding points. The two first antennas are disposed on two sides of the insulating substrate, respectively. The two second antennas are disposed on the two sides of the insulating substrate, respectively. Each of the two second antennas includes two sub-antennas. In any one of the two sides of the insulating substrate, a region defined by orthogonally projecting two sub-middle segments of the two sub-antennas onto another one of the two sides of the insulating substrate overlaps with a main middle segment of the first antenna. The coupling unit is electrically coupled to the two sub-antennas on each of the two sides of the insulating substrate. The two feeding points are electrically coupled to the two first antennas and the two second antennas.

Global navigation satellite system (GNSS) radio frequency signals broadcast from geo-stationary satellites 20,000 km above the earth when received by GNSS receivers are fundamentally weak. Accordingly, these GNSS receivers are vulnerable to accidental and deliberate interference from a range of synthetic sources as well as natural sources. Existing anti jamming technologies such as controlled reception pattern antennas, adaptive antennas, null-steering antennas, and beamforming antennas etc. are expensive and incompatible with many lower cost and footprint limited applications. However, in many applications the GNSS antenna is mounted upon a fixed or mobile element such that accidental and intentional jammers tend to be in the plane of the antenna or below it. Accordingly, there are presented designs and techniques to improve the anti-jamming or interference performance of GNSS receivers by further reducing the responsivity of the GNSS receiver to signals in-plane or below the plane of the antenna.

An array antenna is proved. The array antenna provides multi-polarization by arranging multiple ports at adjacent positions. Specifically, the array antenna includes a first substrate having a first thickness and a rectangular shape, a second substrate disposed to be in contact with the bottom surface of the first substrate and having a second thickness and a rectangular shape, a ground surface shared by the first substrate and the second substrate, and first ports and second ports disposed to penetrate the ground surface.

An antenna module includes a base member, an antenna that includes a radiating element disposed in or on the base member, first and second feed lines each of which is connected to the radiating element, and a control circuit that is connected to the radiating element via the first feed line and the second feed line. The control circuit includes a signal processing circuit that is connected to the antenna via the first feed line and the second feed line and an antenna inspection circuit that checks an electrical conductivity of an electrical conduction path connecting the first feed line, the radiating element, and the second feed line to one another.

An antenna device includes a dielectric substrate, an emitting electrode, a power feed circuit that feeds power to the emitting electrode, and a filter circuit formed on a path connecting the emitting electrode to the power feed circuit, the filter circuit is constituted by two or more circuits that are cascade connected, each of the two or more circuits is either a HPF or a LPF, and the antenna device does not have a resonant frequency of the emitting electrode and has two or more resonant frequencies different from the resonant frequency of the emitting electrode, each of which is formed by the emitting electrode and a corresponding one of the two or more circuits.

A composite antenna device includes a first antenna, plural second antennas whose used frequency bands are different from a used frequency band of the first antenna, and a first conductor portion to serve as a ground plane of the first antenna and the second antennas. Each of the plural second antennas may have a second conductor portion. The first antenna may be provided on the first conductor portion, and at least a portion of the first conductor portion may be positioned between the second conductor portions.

A dual band antenna includes a substrate having a magnetodielectric material, and an electrically conductive patch disposed on the substrate, wherein the patch has at least one in-plane cutout having an H-shape or an I-shape, as observed in a plan view of the patch.

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.

A broadband patch antenna comprises a substrate, a ground plate attached to one surface of the substrate, a radiation plate attached to the other surface of the substrate opposite the one surface of the substrate, and a feed line attached to the other surface of the substrate and having one end connected to the radiation plate. The feed line comprises a first line and a second line. The ground plate has the shape of capital “L” having a first groove, a second groove, and a third groove, and may not comprise a portion corresponding to the radiation plate. The first groove is positioned at a first portion which corresponds to a connection portion between the first line and the radiation plate, the second groove is positioned at a second portion which corresponds to a connection portion between the second line and the radiation plate, and the third groove may be positioned so as to be spaced apart from the first groove and the second groove.