Millimeter-wave crossover coupler

A device, comprising:

• a crossover coupler, comprising:
• a single top metallization layer,
• a substrate beneath the single top metallization layer, and
• a single ground plane metallization layer beneath the substrate, wherein the single top metallization layer comprises:
• a first pair of opposite ports coupled together by a first microstrip line,
• a second pair of opposite ports coupled together by a second microstrip line, wherein the first microstrip line and the second microstrip line form a cross-shape pattern that intersects at an intersection point,
• inner partial couplers substantially symmetrically or symmetrically distributed around the intersection point, and
• an outer ring that surrounds the inner partial couplers and is substantially centered at the intersection point.

A non-transitory machine-readable medium, comprising executable instructions that, when executed by at least one processor, facilitate performance of operations, the operations comprising:

• obtaining crossover coupler input parameters comprising a defined bandwidth, and a defined center frequency;
• determining design parameters for a crossover coupler that satisfies the input parameters, the crossover coupler comprising:
• a single top metallization layer, comprising:
• a first pair of opposite ports coupled together by a first microstrip line,
• a second pair of opposite ports coupled together by a second microstrip line, wherein the first microstrip line and the second microstrip line form a cross-shaped pattern that intersects at an intersection point,
• four inner partial couplers substantially symmetrically distributed around the intersection point, and
• an outer ring that surrounds the four inner partial couplers and is substantially centered at the intersection point,
• wherein the determining of the design parameters comprises determining a defined size of an area encompassing the outer ring to establish the defined center frequency of the crossover coupler, and determining at least one of:
• a width of the outer ring, or a gap distance between adjacent pairs of the inner partial couplers, to establish the defined bandwidth;
• and
• configuring the crossover coupler to be implemented, comprising configuring the crossover coupler based on the design parameters.