A compact stacked microstrip patch antenna is proposed based on slot matching concept. Double layers of patches with parasitic resonator elements and substrates are manipulated in a stacked configuration. Slots and switches are integrated to each patch to enhance the antenna applicability for multi-wideband applications. The dimensions of the patches, parasitic elements, slots, and states of the switches and their positions are designed such that the antenna gives different number of resonant frequencies. The proposed antenna is capable to achieve a return loss less than -9.54 dB and voltage standing wave ratio  2 in almost nine frequency bands within a frequency range of 2 - 5 GHz.