CPC H01Q 21/064 (2013.01) [G01S 7/03 (2013.01); H01Q 1/3233 (2013.01); H01Q 3/245 (2013.01); H01Q 15/06 (2013.01); H01Q 21/0031 (2013.01); H01Q 21/24 (2013.01); H01Q 21/245 (2013.01); H01Q 25/008 (2013.01); G01S 2013/0254 (2013.01)] | 15 Claims |
1. A front end of a radar system comprising:
a first front end apparatus including a first transmit planar component and a first receive planar component, the first transmit planar component and the first receive planar component arranged to be perpendicular to one another; and
a second front end apparatus including a second transmit planar component and a second receive planar component, the second transmit planar component and the second receive planar component arranged to be perpendicular to one another, each of the first transmit planar component, the first receive planar component, the second transmit planar component and the second receive planar component including:
a first end;
a second end located opposite the first end, electromagnetic waves propagating in propagation directions between the first end and the second end;
a cavity space bounded by beam ports along a first side of the cavity space and by array ports along a second side of the cavity space, the cavity space being in operative communication with the beam ports and with the array ports to form a Rotman lens; and
a linear array of antennas located along the second end of the planar component, each of the antennas being in operative communication with a corresponding one of the array ports,
wherein the first transmit planar component and the second transmit planar component are parallel to one another, and the first receive planar component and the second receive planar components are parallel to one another, and
wherein a first set of waves are transmitted from the linear array of antennas of the first transmit planar component to be received by the linear array of antennas of the first receive planar component, and a second set of waves are transmitted from the linear array of antennas of the second transmit planar component to be received by the linear array of antennas of the second receive planar component.
|