公开(公告)号：US20170250455A1

公开(公告)日：2017-08-31

申请号：US15516197

申请日：2015-10-01

Applicant: VIASAT, INC.

Inventor： DONALD L RUNYON ,  SHARAD V PAREKH

IPC: H01Q1/08 ,  H01Q1/28 ,  H01Q15/14 ,  H01Q19/13 ,  H04H40/90 ,  H01Q3/08 ,  H01Q3/18 ,  H01Q5/45 ,  H04B7/185 ,  H01Q1/12 ,  H01Q25/00

CPC classification number: H01Q5/45 ,  H01Q1/084 ,  H01Q1/1228 ,  H01Q1/125 ,  H01Q1/1257 ,  H01Q1/1264 ,  H01Q1/288 ,  H01Q3/08 ,  H01Q3/18 ,  H01Q15/14 ,  H01Q19/132 ,  H01Q25/007 ,  H04B7/185 ,  H04H40/90

Abstract: In one embodiment, a multi-beam antenna is described. The multi-beam antenna includes a reflector having a single reflector surface defining a first focal region and a second focal region. A first feed group is located within the first focal region. The first feed group includes a first feed oriented relative to the reflector define a first beam pointed in a first direction. The multi-beam antenna further includes a fixed attachment mechanism attaching the first feed group to the reflector such that a position of the first feed group is fixed relative to the reflector. The multi-beam antenna further includes a second feed group located within the second focal region. The second feed group includes a second feed oriented relative to the reflector to define a second beam pointed in a second direction. The multi-beam antenna further includes an adjustable attachment mechanism attaching the second feed group to the reflector in an adjustable relation to the reflector, whereby a difference between the first direction and the second direction is adjustable.

公开(公告)号：US20190157734A1

公开(公告)日：2019-05-23

申请号：US16031787

申请日：2018-07-10

Applicant: VIASAT, INC.

Inventor： SHARAD V PAREKH ,  DOMINIC Q NGUYEN

IPC: H01P3/12 ,  H01Q19/17 ,  H01P1/17 ,  H01Q19/02 ,  H01Q19/13

CPC classification number: H01P3/12 ,  H01P1/173 ,  H01Q19/028 ,  H01Q19/132 ,  H01Q19/17

Abstract: Methods, systems, and devices are described that include one or more septum features to improve performance of a waveguide device. In particular, the septum features may be utilized within a polarizer section of a polarizer device such as a septum polarizers. The septum feature(s) may be a ridge. When a plurality of septum features are employed, the location, size, shape and spacing may vary according to a particular design.

公开(公告)号：US20170263991A1

公开(公告)日：2017-09-14

申请号：US15482130

申请日：2017-04-07

Applicant: VIASAT, INC.

Inventor： ANDERS JENSEN ,  JOHN D VOSS ,  DONALD L RUNYON ,  SHARAD V PAREKH ,  DOMINIC Q NGUYEN

IPC: H01P1/17 ,  H01Q1/12 ,  H01Q13/28

CPC classification number: H01P1/172 ,  H01P1/161 ,  H01P1/173 ,  H01Q1/1214 ,  H01Q13/06 ,  H01Q13/28 ,  H01Q21/064

Abstract: In an example embodiment, a waveguide device comprises: a first common waveguide; a polarizer section, the polarizer section including a conductive septum dividing the first common waveguide into a first divided waveguide portion and a second waveguide divided portion; a second waveguide coupled to the first divided waveguide portion of the polarizer section; a third waveguide coupled to the second divided waveguide portion of the polarizer section; and a dielectric insert. The dielectric insert includes a first dielectric portion partially filling the polarizer section. The conductive septum and the dielectric portion convert a signal between a polarized state in the first common waveguide and a first polarization component in the second waveguide and a second polarization component in the third waveguide.