An electronic device may have an antenna embedded in a substrate. The substrate may have first layers, second layers on the first layers, and third layers on the second layers. The antenna may include a first patch on the first layers that radiates in a first band, a second patch on the second antenna layers that radiates in a second band, and a parasitic patch on the third layers. A short path may couple ground to a location on the first patch that allows the first patch to form a ground extension in the second band for the second patch without affecting performance of the first patch in the first band. The first layers may have a higher dielectric permittivity than the second and third layers to minimize the thickness of the substrate without requiring a separate dielectric loading layer over the substrate.

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.

There is provided a new type of structure that resonates at a predetermined frequency, an antenna, a wireless communication module, and a wireless communication device. The structure includes a first conductor that extends in a second direction, a second conductor, a third conductor, a fourth conductor. The second conductor faces the first conductor in a first direction and that extends along the second direction. The third conductor is configured to capacitively connect the first conductor and the second conductor. The fourth conductor is configured to be electrically connected to the first conductor and the second conductor and extends along a first plane. Each of the first conductor and the second conductor includes a portion that extends along the second direction and that is exposed to an exterior space.

A filter-antenna and a method for making a filter-antenna. The filter antenna includes a microstrip antenna, such as a patch antenna, integrated with an absorptive (e.g., bandstop) filter for absorbing or dissipating energy.

In a described example, an apparatus includes: a patch antenna formed in a first conductor layer on a device side surface of a multilayer package substrate, the multilayer package substrate including conductor layers spaced from one another by dielectric material and coupled to one another by conductive vertical connection layers, the multilayer package substrate having a board side surface opposite the device side surface; and a semiconductor die mounted to the device side surface of the multilayer package substrate spaced from and coupled to the patch antenna.

A microstrip antenna array including: a thin substrate; two or more microstrip radiating patches placed on a first side of the substrate, each radiating patch including: an input port; a radiating patch width (WRP) extending in a longitudinal direction; a radiating patch length (LRP) extending in a transverse direction, wherein the transverse direction is perpendicular to the longitudinal direction, and wherein the longitudinal and transverse directions are in the plane of the radiating patch; a radiating patch transverse axis (TRP) along the midpoint of the radiating patch width; and a radiating patch longitudinal axis along the midpoint of the radiating patch length, wherein the two or more radiating patches are spaced in the longitudinal direction such that the radiating patch longitudinal axis of each radiating patch is aligned along a common longitudinal axis (C); and one or more parasitic patches placed on the first side of the substrate.

An antenna device includes a dielectric substrate, a ground plate arranged on a first surface of the dielectric substrate, an antenna part arranged on a second surface of the dielectric substrate, and a reflecting part. The reflecting part is arranged around the antenna part and has a plurality of conductor patches each functioning as a reflecting plate. The plurality of conductor patches form a plurality of blocks aligned along a predetermined block arrangement direction. The plurality of blocks are configured such that phases of reflected waves at an operating frequency are different for each of the blocks and phase differences of reflected waves between adjacent blocks are non-uniformly different for each of the adjacent blocks.

A method for initial timing synchronization for a WTRU to communicate with a network includes receiving an in-channel narrowband synchronization sequence from the network to enable initial coarse timing synchronization, determining coarse timing offset and a range between a beam source of a network transmitter and the WTRU, selecting a wideband sequence for fine timing synchronization using the estimated range, transmitting the selected wideband sequence for fine timing synchronization during an uplink timing occasion, receiving from the network a transmission of the selected wideband sequence for fine timing synchronization, and establishing fine timing synchronization between the WTRU and the network using the selected sequence.

A planar antenna formed on a front surface of a substrate whose back surface serves as a ground surface, the planar antenna includes: a radiating element; a feeding line connected with the radiating element; a first ground element and a second ground element which are respectively electrically connected to the ground surface and are arranged to be opposed to each other across the feeding line; a first parasitic element extending from the first ground element to surround at least a part of the radiating element; and a second parasitic element extending from the second ground element to surround at least a part of the radiating element from an opposite direction from the first parasitic element, wherein the first ground element and the second ground element serve as impedance matching devices for the feeding line.

A substrate integrated waveguide fed antenna includes an electric dipole arrangement, a parasitic patch arrangement operably coupled with the electric dipole arrangement, and a feed structure. The feed structure includes a substrate integrated waveguide operably coupled with the electric dipole arrangement for exciting the electric dipole arrangement. A slotted conductive surface with a slot is arranged between the electric dipole arrangement and the feed structure for operably coupling the feed structure with the electric dipole arrangement.