Planar phased array antenna assembly
AssigneeResearch & Development Laboratories, Inc.
InventorJames K. Chan
Life of this patent
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Abstract
A new planar phased array antenna is disclosed having M by N antenna cells with only M+N phase shifters. A grid of M+N feed lines with the M feed lines at a first frequency having a uniquely controllable phase and N feed lines at a second frequency with each feed line having a uniquely controllable phase are provided separating adjacent cells in the matrix. By coupling an antenna element through a mixer to one row and column feed, a phase for each antenna element in the array can be uniquely controlled through a scan, thereby providing a simplified planar array to be implemented as a patch antenna.
Claims4
A phased array antenna having a gain pattern comprising:
- a plurality of patch antenna elements arranged in an array of columns and rows having a periphery;
- a separate mixer coupled to each of the patch elements;
- a matrix of column and row feeder lines, each antenna element separated from the adjacent antenna element by a row feeder line and a column feeder line, each row feeder line being coupled to each mixer in a row of the antenna elements adjacent to the feeder line and each column feeder line being coupled to each mixer;
- and wherein
- said mixer couples one of said feeder lines to the antenna element and a filter couples the other of said feeder lines to the antenna element.
Dependencies are inferred from the claim text.