Patent ID: 7183979

Claim:
A dual-band patch antenna with a slot structure, comprising: a base board; a rectangular radiator having a first longer side, a second longer side parallel to said first shorter side, a first shorter side, and a second shorter side parallel to said first longer side, wherein said slot structure is formed on said rectangular radiator, said slot structure having: a first linear slot, wherein one end of said first linear slot is perpendicularly connected to said first shorter side; and a second linear slot, wherein one end of said second linear slot is perpendicularly connected to the other end of said first linear slot, and said second linear slot is located between said first linear slot and said first longer side; a feeding means connected to a feed point located on said rectangular radiator, wherein said feeding means is inserted into said base board, and said feed point is located between said first longer side and the other end of said second linear slot; a first shorting strip connected to a first short point located on said rectangular radiator, wherein said first short point is located on the corner formed from said first shorter side and said first linear slot, and is between said second linear slot and said first shorter side; and a second shorting strip connected to a second short point located on said rectangular radiator, wherein said second short point is adjacent to said second shorter side with a predetermined distance spaced from said first longer side, and said first shorting strip and said second shorting strip are electrically connected to a ground plane formed on said base board.