Polarization-Independent Spatial Power Divider For A Two-Port Millimeter-Wave Antenna

An antenna system, comprising:

• a transmit antenna feed configured to transmit a transmit signal;
• a receive antenna feed configured to receive a receive signal;
• and
• a spatial power divider comprised of a dielectric plate defining two opposing surfaces, a transmit surface is one of the two opposing surfaces orientated at forty-five degrees in relation to propagation direction of the transmit signal received from the transmit antenna feed and a receive surface is the other of the two opposing surfaces orientated at forty-five degrees in relation to propagation direction of the receive signal received by the receive antenna feed,
• wherein one of the two opposing surfaces includes a series of grooves spaced apart from each other at a uniform distance, each groove defining a longitudinal axis arranged in parallel with other grooves, and
• wherein the spatial power divider is configured to transmit and reflect signals having a frequency in a band from 221 GHz to 250 GHz.

An antenna system, comprising:

• a transmit antenna feed configured to transmit a transmit signal;
• a receive antenna feed configured to receive a receive signal;
• and
• a spatial power divider comprised of a dielectric plate defining two opposing surfaces, a transmit surface is one of the two opposing surfaces orientated at forty-five degrees in relation to propagation direction of the transmit signal received from the transmit antenna feed and includes a series of grooves formed therein, such that the grooves are spaced apart from each other at a uniform distance and each groove defines a longitudinal axis arranged in parallel with other grooves;
• and
• a receive surface is the other of the two opposing surfaces orientated at forty-five degrees in relation to propagation direction of the receive signal received by the receive antenna feed and includes a series of metal strips disposed thereon and spaced apart from each other, such that each metal strip defines a longitudinal axis arranged in parallel with the series of grooves.