Abstract: An RF antenna structure (e.g., a planar array) includes at least one radiation cell (and typically many, e.g., 16 or 32 or 64, etc.) having a conductive enclosure and an upper probe and a lower probe located at different heights within the enclosure. The enclosure between the upper probe and a bottom of the cell has at least two different cross-sectional areas. The upper and lower probes are preferably oriented at substantially 90° relative to each other. An upper portion of the enclosure beneath the upper probe may have a larger dimension than a lower portion such that the upper portion allows propagation of waves generated by the upper probe in a predetermined frequency band while the lower portion (e.g., above the lower probe) does not substantially allow propagation of waves generated by the upper probe, in the predetermined frequency band.

Abstract: In some embodiments of the present invention, an antenna front end includes at least two diplexers. Each of the diplexers is defined with a channel within a single material block. Each channel is shaped to provide a diplexer which includes a coupler, a receive band filter and a transmit band filter, which are adjoined and matched to form a continuous waveguide channel. Some embodiments further include a transmit hybrid coupler and/or a receive hybrid coupler. The transmit hybrid coupler is formed as a channel within the material block and adjoined and matched to the two transmit band filters. The receive hybrid coupler is formed as a channel within the material block and adjoined and matched to the two receive band filters.

Abstract: An RF antenna structure (e.g., a planar array) includes at least one radiation cell (and typically many, e.g., 16 or 32 or 64, etc.) having a conductive enclosure and an upper probe and a lower probe located at different heights within the enclosure. The enclosure between the upper probe and a bottom of the cell has at least two different cross-sectional areas. The upper and lower probes are preferably oriented at substantially 90° relative to each other. An upper portion of the enclosure beneath the upper probe may have a larger dimension than a lower portion such that the upper portion allows propagation of waves generated by the upper probe in a predetermined frequency band while the lower portion (e.g., above the lower probe) does not substantially allow propagation of waves generated by the upper probe, in the predetermined frequency band.

Abstract: In some embodiments of the present invention, an antenna front end includes at least two diplexers. Each of the diplexers is defined with a channel within a single material block. Each channel is shaped to provide a diplexer which includes a coupler, a receive band filter and a transmit band filter, which are adjoined and matched to form a continuous waveguide channel. Some embodiments further include a transmit hybrid coupler and/or a receive hybrid coupler. The transmit hybrid coupler is formed as a channel within the material block and adjoined and matched to the two transmit band filters. The receive hybrid coupler is formed as a channel within the material block and adjoined and matched to the two receive band filters.

Abstract: An RF antenna structure (e.g., a planar array) includes at least one radiation cell (and typically many, e.g., 16 or 32 or 64, etc.) having a conductive enclosure and an upper probe and a lower probe located at different heights within the enclosure. The enclosure between the upper probe and a bottom of the cell has at least two different cross-sectional areas. The upper and lower probes are preferably oriented at substantially 90° relative to each other. An upper portion of the enclosure beneath the upper probe may have a larger dimension than a lower portion such that the upper portion allows propagation of waves generated by the upper probe in a predetermined frequency band while the lower portion (e.g., above the lower probe) does not substantially allow propagation of waves generated by the upper probe, in the predetermined frequency band.