An antenna for connection to a feed includes a substrate with a conductive ground plane. An emitter is positioned on the top face of the substrate, and the feed is connected to the emitter and ground plane. A spacer is positioned on the substrate above the emitter and one layer of high dielectric constant rods is positioned above the spacer. The rods are positioned in a single plane, coplanar with the emitter, and parallel to the dominant current distribution when the emitter is active. Further layers of spacers and rods can be positioned at a predetermined angle to the rods beneath. A kit is further provided for application of spacers and rods to preexisting antennas.

A transmitter of a feed network includes first and second branches and an integrated branch line coupler that couples the first and second branches. The integrated branch line coupler includes first and second waveguide reject filters in the first and second branches respectively. The first and second waveguide reject filters include one or more single-sided stubs protruding outwardly from outer faces of the first and second waveguide reject filters. The integrated branch line coupler further includes one or more couplers that are coupled between inner faces of the first and second waveguide reject filters. The transmitter includes a core waveguide that is coupled to the first and second branches. The transmitter receives a linearly polarized signal from an input port of the first or second branches and generates a circularly polarized signal in the core waveguide.

A transmitter of a feed network includes first and second branches and an integrated branch line coupler that couples the first and second branches. The integrated branch line coupler includes first and second waveguide reject filters in the first and second branches respectively. The first and second waveguide reject filters include one or more single-sided stubs protruding outwardly from outer faces of the first and second waveguide reject filters. The integrated branch line coupler further includes one or more couplers that are coupled between inner faces of the first and second waveguide reject filters. The transmitter includes a core waveguide that is coupled to the first and second branches. The transmitter receives a linearly polarized signal from an input port of the first or second branches and generates a circularly polarized signal in the core waveguide.

An antenna apparatus has an antenna unit. The antenna unit transmits or receives a probe wave made of an electromagnetic wave. A magnet is disposed at a location through which the probe wave to be received by the antenna unit passes. The magnet works to generate a magnetic field along a direction in which the probe wave propagates. A polarizing filter is arranged on an opposite side of a magnetic body to the antenna unit. This minimizes the interference between an emitted wave and a reflected wave created by a cover, such as a bumper, regardless of the configuration of the cover.

An antenna apparatus has an antenna unit. The antenna unit transmits or receives a probe wave made of an electromagnetic wave. A magnet is disposed at a location through which the probe wave to be received by the antenna unit passes. The magnet works to generate a magnetic field along a direction in which the probe wave propagates. A polarizing filter is arranged on an opposite side of a magnetic body to the antenna unit. This minimizes the interference between an emitted wave and a reflected wave created by a cover, such as a bumper, regardless of the configuration of the cover.

An AESA (Active Electronically Scanned Array), including: a PCB (Printed Circuit Board) substrate having an obverse surface; TRMs (Transmit/Receive Modules) disposed on the obverse surface; thermal pedestals wherein each thermal pedestal includes a wall, having a wall height, including wall surfaces and one of the wall surfaces being a contact surface; and a TIM (Thermal Interface Material), having a TIM height, disposed between a respective contact surface of the thermal pedestals and the obverse surface. The thermal pedestals are discrete with respect to one another, the contact surfaces of the thermal pedestals are interspersed about the TRMs, the thermal pedestals do not contact the TRMs, the TIM is electrically and thermally conductive, and the wall height plus the TIM height is sufficient to suppress resonances of the TRMs below a frequency greater than the Tx and Rx frequency bands of the TRMs.

A WPT system and apparatus for the WPT system is provided in the present invention. The apparatus includes: (i) a transmitter, and (ii) a receiver. The transmitter transmits microwave power towards the receiver. The transmitter includes a power generation source, a CP horn and an antenna reflect array aperture. The receiver includes a rectenna array aperture. The rectenna array aperture further includes a sub-array module, a DC power output and a power conditioner circuit. The power conditioner circuit further includes a plurality of rectenna elements. The one or more sub-array module couple to form the rectenna array aperture.

Aspects of the subject disclosure may include, for example, a system having an antenna for launching, according to a signal, a first electromagnetic wave to induce a propagation of a second electromagnetic wave along a transmission medium, the second electromagnetic wave having a non-fundamental wave mode and a non-optical operating frequency. A reflective plate is spaced a distance behind the antenna relative to a direction of the propagation of the second electromagnetic wave. Other embodiments are disclosed.

An antenna for connection to a feed includes a substrate with a conductive ground plane. An emitter is positioned on the top face of the substrate, and the feed is connected to the emitter and ground plane. A spacer is positioned on the substrate above the emitter and one layer of high dielectric constant rods is positioned above the spacer. The rods are positioned in a single plane, coplanar with the emitter, and parallel to the dominant current distribution when the emitter is active. Further layers of spacers and rods can be positioned at a predetermined angle to the rods beneath. A kit is further provided for application of spacers and rods to preexisting antennas.

A wireless device using a radiating system able to operate in more than one communication system features compact dimensions and comprises a radiating structure that contains a compact booster arrangement that comprises first and second boosters, arranged in a configuration such that the boosters are not concatenated between them, i.e., not being placed one next to each other. One of the boosters comprises a slot or a gap in a ground plane layer and another of the boosters comprises at least a conductive part or element connected at a point to an additional conductive element that comprises a feeding point. The radiating structure also comprises the ground plane layer and a radiofrequency system. The radiating system also comprises one or two ports, each providing operation at least at one of the communication systems of operation.