Microwave antennas having optimized performance are provided. The microwave antennas include a primary reflector having effective foci arranged in a generally circular or elliptic range around a central axis thereof, and a matching component filling a hole at a bottom center portion thereof. The structural parameters of the microwave antenna are tuned by an aperture field analysis method to optimize the overall performance.

The invention includes various embodiments of integrated dual-band printed antenna feeds having various combinations of electrical and structural components for use with a prime focus, ring focus, or Cassegrain dish antennas. All of the embodiments of dual-band antenna feeds disclosed herein are configured to be fabricated as a single structure using metal additive manufacturing techniques.

The invention includes various embodiments of integrated dual-band printed antenna feeds having various combinations of electrical and structural components for use with a prime focus, ring focus, or Cassegrain dish antennas. All of the embodiments of dual-band antenna feeds disclosed herein are configured to be fabricated as a single structure using metal additive manufacturing techniques.

An antenna device includes a substrate, a first ground layer, a radiation electrode, and waveguide structures. Each of the waveguide structures has a slit and a conductor wall. The slit is positioned in an electric field direction of the radiation electrode and provided in the first ground layer. The conductor wall surrounds the slit and extends in a thickness direction of the substrate. A dimension of the waveguide structure in a magnetic field direction in plan view is greater than ½ of a wavelength of a radio wave emitted by the radiation electrode in a medium of the substrate. A length from the slit to a terminal portion of the waveguide structure is about ¼ of a wavelength of the radio wave emitted by the radiation electrode in the waveguide structure.

A Wireless Electricity Distribution System (WEDS) and method is provided in the present invention. The apparatus includes a transmitter that transmits a microwave radiation beam towards a receiver. The transmitter includes a source of electricity, an electricity to microwave converter and a reflectarray antenna having a emitter horn and reflect aperture. The receiver includes a rectenna antenna providing a power conditioner. Alternatives include multiple beam transmitters, modular construction, intermediate relay redirectors, and simultaneous data over power transmissions.

An antenna system includes technological improvements for achieving improved surface accuracy of an antenna reflector during manufacturing and assembly, as well as maintaining the surface accuracy in response to wear and tear on the reflector. The antenna system includes a reflector, a plurality of mounting tabs, and a backing structure. The reflector has a front reflecting curved surface, an outer rim, and a back surface. The plurality of mounting tabs are positioned and secured around the outer rim of the reflector. Each of the plurality of mounting tabs is independently flexible with respect to the outer rim. The backing structure has a central mount, a plurality of attachment arms, and a feed arm attachment. The plurality of attachment arms are secured to the outer rim of the reflector via the plurality of mounting tabs.

The invention includes various embodiments of integrated dual-band printed antenna feeds having various combinations of electrical and structural components for use with a prime focus, ring focus, or Cassegrain dish antennas. All of the embodiments of dual-band antenna feeds disclosed herein are configured to be fabricated as a single structure using metal additive manufacturing techniques.

A Wireless Electricity Distribution System (WEDS) and method is provided in the present invention. The apparatus includes a transmitter that transmits a microwave radiation beam towards a receiver. The transmitter includes a source of electricity, an electricity to microwave converter and a reflectarray antenna having a emitter horn and reflect aperture. The receiver includes a rectenna antenna providing a power conditioner. Alternatives include multiple beam transmitters, modular construction, intermediate relay redirectors, and simultaneous data over power transmissions.

An antenna system includes technological improvements for achieving improved surface accuracy of an antenna reflector during manufacturing and assembly, as well as maintaining the surface accuracy in response to wear and tear on the reflector. The antenna system includes a reflector, a plurality of mounting tabs, and a backing structure. The reflector has a front reflecting curved surface, an outer rim, and a back surface. The plurality of mounting tabs are positioned and secured around the outer rim of the reflector. Each of the plurality of mounting tabs is independently flexible with respect to the outer rim. The backing structure has a central mount, a plurality of attachment arms, and a feed arm attachment. The plurality of attachment arms are secured to the outer rim of the reflector via the plurality of mounting tabs.

An antenna device includes a substrate, a first ground layer, a radiation electrode, and waveguide structures. Each of the waveguide structures has a slit and a conductor wall. The slit is positioned in an electric field direction of the radiation electrode and provided in the first ground layer. The conductor wall surrounds the slit and extends in a thickness direction of the substrate. A dimension of the waveguide structure in a magnetic field direction in plan view is greater than of a wavelength of a radio wave emitted by the radiation electrode in a medium of the substrate. A length from the slit to a terminal portion of the waveguide structure is about of a wavelength of the radio wave emitted by the radiation electrode in the waveguide structure.