Innovative Open Waveguide Bend for Leakage Mitigation

A radar control module, comprising:

• a printed circuit board including a radio frequency port;
• a trough waveguide antenna mounted to the printed circuit board and having a base and a first sidewall and a second sidewall each extending from the base, a fin extending from the base along a center region between the first sidewall and the second sidewall and an open side opposite the base, a first channel is disposed between the first sidewall and the fin and a second channel is formed between the second sidewall and the fin, wherein the trough waveguide antenna includes a bend region in which the first channel is on an interior of the bend region and the second channel is on an exterior of the bend region and a depth of the first channel is deeper in the bend region than a depth of the second channel in the bend region.

A radar control module, comprising:

• a printed circuit board including a radio frequency port;
• a trough waveguide antenna mounted to the printed circuit board and having a base and a first sidewall and a second sidewall each extending from the base, a fin extending from the base along a center region between the first sidewall and the second sidewall and an open side opposite the base, a first channel is disposed between the first sidewall and the fin and a second channel is formed between the second sidewall and the fin, wherein the trough waveguide antenna includes a bend region in which the first channel is on an interior of the bend region and the second channel is on an exterior of the bend region and a depth of the first channel is deeper in the bend region than a depth of the second channel in the bend region and the depth of the second channel has a constant depth along a length of the trough waveguide antenna.