In this study, a printed microstrip monopole antenna with band-notched property for wide band communication systems is presented. The antenna is intended to operate in two bands. By using two symmetric rectangular slots on the radiating patch, a notched band 5-6GHz, not to interfere with WLAN, is obtained. Additionally, an M-shaped slot to acquire another notch band at 8-9GHz is formed on the microstrip feed line not to be affected by C-band satellite communication system. Antenna simulations are realized using HFSS and CST high frequency simulators.