The invention relates to a single-board
microstrip slot phased-array antenna which is based on a single-board
system integration technology, compact in structure and simple in
beam control system. The single-board
microstrip slot phased-array antenna comprises a
dielectric substrate, wherein a metallic grounding plate is arranged on one surface of the
dielectric substrate, at least two row-direction
microstrip lines and a column-direction microstrip line are arranged on the other surface of the
dielectric substrate, and
equidistant slot or microstrip slot antennae are formed on the metallic grounding plate through
etching along straight lines corresponding to all the row-direction microstrip lines; the column-direction microstrip line is connected with one ends of the row-direction microstrip lines respectively through
direct current (DC) blocking capacitors, and the other ends of the row-direction microstrip lines are respectively connected with matched loads through DC blocking capacitors; one end of the column-direction microstrip line is connected with a
matched load through a DC blocking
capacitor, and the other end of the column-direction microstrip line is connected with a radio-frequency terminal through a DC blocking
capacitor; and row-direction
barium strontium titanate (BST) strips are respectively arranged between all the row-direction microstrip lines and the
dielectric substrate, and a column-direction BST strip is also arranged between the column-direction microstrip line and the
dielectric substrate.