An antenna assembly includes a plurality of antenna elements, a microstrip feed network that is configured to supply power to the plurality of antenna elements, and one or more resistors disposed within the microstrip feed network proximate to one or more of the plurality of antenna elements. The resistors are configured to control sidelobes of the antenna assembly.

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 hearing device for placement in a user’s ear includes: at least one input transducer, an output transducer, a wireless communication unit and an antenna arrangement adapted for providing a wireless link, and a reference axis, the reference axis being parallel to the user’s ear-to-ear axis, when the hearing device is placed in an operable position, wherein in that the antenna arrangement comprises a first antenna configured for transmitting/receiving EM-radiation at a first frequency, the first antenna comprising a first electrically conducting segment extending in a first direction, a second antenna configured for transmitting/receiving EM-radiation at the first frequency, the second antenna comprising a second electrically conducting segment extending in a second direction, the second direction being different from the first direction, a first feed coupling the first antenna to the wireless communication unit, and a second feed coupling the second antenna to the wireless communication unit.

A hearing device for placement in a user’s ear includes: at least one input transducer, an output transducer, a wireless communication unit and an antenna arrangement adapted for providing a wireless link, and a reference axis, the reference axis being parallel to the user’s ear-to-ear axis, when the hearing device is placed in an operable position, wherein in that the antenna arrangement comprises a first antenna configured for transmitting/receiving EM-radiation at a first frequency, the first antenna comprising a first electrically conducting segment extending in a first direction, a second antenna configured for transmitting/receiving EM-radiation at the first frequency, the second antenna comprising a second electrically conducting segment extending in a second direction, the second direction being different from the first direction, a first feed coupling the first antenna to the wireless communication unit, and a second feed coupling the second antenna to the wireless communication unit.

A multi-beam phased array antenna system includes a beamformer responsive to control signals to convert between a plurality of subarray signals and a plurality of beam signals. The system also includes a plurality of subarrays to communicate a plurality of beams corresponding to the plurality of beam signals. Each subarray includes a plurality of radiating elements. Each subarray also includes subarray beamforming circuitry responsive to respective beam weights to adjust RF signals communicated with the radiating elements, and convert between the adjusted RF signals and one respective subarray signal. The system further includes a controller that determines two or more beams, wherein the two or more beams are the same communication type. The beamformer assigns disjoint subsets of subarrays to each of the determined two or more beams. The controller also provides the beam weights for each of the plurality of subarrays and provides the control signals to the beamformer.

A multi-beam phased array antenna system includes a beamformer responsive to control signals to convert between a plurality of subarray signals and a plurality of beam signals. The system also includes a plurality of subarrays to communicate a plurality of beams corresponding to the plurality of beam signals. Each subarray includes a plurality of radiating elements. Each subarray also includes subarray beamforming circuitry responsive to respective beam weights to adjust RF signals communicated with the radiating elements, and convert between the adjusted RF signals and one respective subarray signal. The system further includes a controller that determines two or more beams, wherein the two or more beams are the same communication type. The beamformer assigns disjoint subsets of subarrays to each of the determined two or more beams. The controller also provides the beam weights for each of the plurality of subarrays and provides the control signals to the beamformer.

A scanning antenna includes a transmission and/or reception region including a plurality of antenna units and a non-transmission and/or reception region other than the transmission and/or reception region. The scanning antenna includes a TFT substrate, a slot substrate, a liquid crystal layer, a seal portion surrounding the liquid crystal layer, a wall structure (additional seal portion) disposed in a region surrounded by the seal portion in the non-transmission and/or reception region, a reflective conductive plate, a first spacer structure defining a first gap between a first dielectric substrate and a second dielectric substrate in the transmission and/or reception region, and a second spacer structure disposed in the wall structure and defining a second gap wider than the first gap. The wall structure includes a first main side face and a second main side face that intersect a surface of the first dielectric substrate, and at least one of the first main side face and the second main side face includes a plurality of recessed portions and/or a plurality of protruding portions when viewed from a normal direction of the first dielectric substrate.

Disclosed are systems for adjusting bias power provided to a radio-frequency amplifier to one or more figures of merit based on sensed characteristics of the amplifier and/or characteristics of the input or output power. The systems may be used in terrestrial and satellite based communications and radar, among other possibilities.

Disclosed are systems for adjusting bias power provided to a radio-frequency amplifier to one or more figures of merit based on sensed characteristics of the amplifier and/or characteristics of the input or output power. The systems may be used in terrestrial and satellite based communications and radar, among other possibilities.

A unit cell can be used for a metasurface, metamaterial, or beamforming antenna. The unit cell includes a metal layer attached to a substrate. The metal layer defines an iris opening for the unit cell. One or more tunable capacitance devices are positioned within or across the iris opening. Each tunable capacitance device is to tune resonance frequency of the unit cell. Mass transfer technologies or self-assembly processes may be used to position the tunable capacitance devices.