Abstract: A feed having a waveguide with a longitudinal axis. A plurality of corrugations extending from an end of the waveguide. The corrugations coaxial with the longitudinal axis, forming an extension of the waveguide. The corrugations having an end face angle less than 90 degrees with respect to the longitudinal axis to squint the feed beam.

Abstract: A feed window for a low noise block converter feedhorn incorporated into a microwave-range antenna assembly is formed from a thermoplastic polymer composition containing a hydroscopic-effective amount of a high molecular weight siloxane.

Abstract: A feed having a waveguide with a longitudinal axis. A plurality of corrugations extending from an end of the waveguide. The corrugations coaxial with the longitudinal axis, forming an extension of the waveguide. The corrugations having an end face angle less than 90 degrees with respect to the longitudinal axis to squint the feed beam.

Abstract: A multi-beam feed assembly having a feed assembly housing with a plurality of input waveguide(s) formed in a front face. The housing may be adapted for manufacture via die casting. The housing also having at least two PCB mounting surface(s), a plurality of probe aperture(s) through the housing between the input waveguide(s) and at least one of the PCB mounting surface(s) and at least one interconnect waveguide through the housing between two of the PCB mounting surface(s). A plurality of PCB may be coupled to the housing at the PCB mounting surfaces. A plurality of transition probe(s) located in the probe aperture(s) coupling each input waveguide to one of the plurality of the PCB and the at least one interconnect waveguide between the at least two PCB mounting surfaces coupling signals between the PCB.

Abstract: A feed window for a low noise block converter feedhorn incorporated into a microwave-range antenna assembly is formed from a thermoplastic polymer composition containing a hydroscopic-effective amount of a high molecular weight siloxane.

Abstract: A receptacle with an adjusting slot is adapted to receive a mounting lip of the feed assembly. A means for positioning which may include a threaded shaft threaded into a first side of the receptacle that projects into a first side of the mounting lip, is operative to move the mounting lip within the adjusting slot. A bias spring may be positioned between the mounting lip and a second side of the mounting lip, the bias spring biasing the mounting lip against the threaded shaft. Alternatively, the threaded shaft may extend threaded through the mounting lip, longitudinally retained with respect to the receptacle operative to move the mounting lip along the adjusting slot as the threaded shaft is rotated.

Abstract: A feed window for a feed assembly having at least one primary feed operating at a primary frequency band and at least one secondary feed operating at a secondary frequency band. The feed window sealing against the feed assembly, enclosing an open end of the feeds. A feed window surface of the feed window supported by and spaced away from the feed assembly by a feed window wall. The feed window surface of the feed window generally parallel to a launch edge of the feeds. The feed window may include an insert positioned between the feed window surface and the feeds. An insert aperture may be applied to the insert, corresponding to a feed view window of one of the feeds.

Abstract: A receptacle with an adjusting slot is adapted to receive a mounting lip of the feed assembly. A means for positioning which may include a threaded shaft threaded into a first side of the receptacle that projects into a first side of the mounting lip, is operative to move the mounting lip within the adjusting slot. A bias spring may be positioned between the mounting lip and a second side of the mounting lip, the bias spring biasing the mounting lip against the threaded shaft. Alternatively, the threaded shaft may extend threaded through the mounting lip, longitudinally retained with respect to the receptacle operative to move the mounting lip along the adjusting slot as the threaded shaft is rotated.

Abstract: A multi-beam feed assembly having a feed assembly housing with a plurality of input waveguide(s) formed in a front face. The housing may be adapted for manufacture via die casting. The housing also having at least two PCB mounting surface(s), a plurality of probe aperture(s) through the housing between the input waveguide(s) and at least one of the PCB mounting surface(s) and at least one interconnect waveguide through the housing between two of the PCB mounting surface(s). A plurality of PCB may be coupled to the housing at the PCB mounting surfaces. A plurality of transition probe(s) located in the probe aperture(s) coupling each input waveguide to one of the plurality of the PCB and the at least one interconnect waveguide between the at least two PCB mounting surfaces coupling signals between the PCB.

Abstract: A feed window for a feed assembly having at least one primary feed operating at a primary frequency band and at least one secondary feed operating at a secondary frequency band. The feed window sealing against the feed assembly, enclosing an open end of the feeds. A feed window surface of the feed window supported by and spaced away from the feed assembly by a feed window wall. The feed window surface of the feed window generally parallel to a launch edge of the feeds. The feed window may include an insert positioned between the feed window surface and the feeds. An insert aperture may be applied to the insert, corresponding to a feed view window of one of the feeds.