Patch antenna with comb substrate

A patch antenna comprising:

• a conducting patch;
• a ground plane separated from said conducting patch by a dielectric;
• and
• a plurality of spaced-apart conducting pins, projecting from, and having a height from, said ground plane;
• wherein:
• said plurality of spaced-apart conducting pins is located between said conducting patch and said ground plane;
• the height of each pin in said plurality of spaced-apart conducting pins is less than the separation between said conducting patch and said ground plane;
• the dielectric between said conducting patch and said plurality of spaced-apart conducting pins is air;
• and
• said patch antenna is configured for circularly-polarized radiation.

A patch antenna comprising:

• a conducting patch;
• a ground plane separated from said conducting patch by a dielectric;
• and
• a plurality of spaced-apart conducting pins, projecting from, and having a height from, said conducting patch;
• wherein:
• said plurality of spaced-apart conducting pins is located between said conducting patch and said ground plane;
• the height of each pin in said plurality of spaced-apart conducting pins is less than the separation between said conducting patch and said ground plane;
• the dielectric between said conducting patch and said ground plane is air;
• and
• said patch antenna is configured for circularly-polarized radiation.