Microstrip antenna

A microstrip antenna comprising:

• a dielectric substrate having a first major surface and a second major surface which is opposite to said first major surface;
• a ground electrode on said first major surface of said dielectric substrate;
• a radiation electrode on said second major surface of said dielectric substrate;
• and
• a feeding terminal electrode extending from a feeding point on said radiation electrode toward said first major surface through the inside of said dielectric substrate, a forward end portion of said feeding terminal electrode being formed so as to terminate substantially at a plane including said ground electrode while being insulated from said ground electrode;
• and further wherein said dielectric substrate has an opening portion in a region covered with said radiation electrode,
• said feeding terminal electrode having a bent portion defined by partially bending said radiation electrode into said opening portion, and said forward end portion being defined by further bending a forward end of said bent portion to be included in said plane including said ground electrode.