Waveguide fed stripline antenna

A method comprising:

• providing a waveguide antenna element and a first reference ground plane on a first substrate;
• providing a microstrip line and a stripline on a second substrate, wherein the stripline is electrically connected to the microstrip line;
• providing a second reference ground plane and a stripline antenna element on a third substrate;
• and
• bonding the first substrate, the second substrate, and the third substrate together to form a substrate assembly having a first side and a second side, wherein the waveguide antenna element and the first reference ground plane are positioned on the first side, and wherein the second reference ground plane and the stripline antenna element are positioned on the second side.

A method comprising:

• receiving a first time-varying electric field at a waveguide antenna element positioned on a first side of a substrate assembly, wherein the first time-varying electric field induces a first current signal with circular behavior within the waveguide antenna element;
• generating a current signal at a microstrip line proximity coupled to the waveguide antenna element;
• receiving the current signal at a stripline electrically connected to the microstrip line;
• and
• generating a second current signal with circular behavior at a stripline antenna element proximity coupled to the stripline, wherein the second current signal induces a second time-varying electric field.