A new stacked patch antenna with a folded patch feed is invented for ultrawideband (UWB) applications. The bandwidth is obtained by a stacked patch fed with a folded patch feed, and the size reduction is realized through the use of shorting wall. The antenna occupies a compact dimension of 15 15 10 mm3. The proposed antenna exhibits impedance bandwidth of 90% for -10dB return loss (VSWR<=2). Details of the antenna design and the results with low-profile characteristics make this invented antenna suitable for UWB applications.