This study offers the design and realization procedure of a broadband monopole antenna for use in communication applications between 670 MHz-2750 MHz. the proposed monopole antenna comprises a low-cost discone antenna which has a relatively high gain value over a wide operation band. Firstly, the performance of the antenna is studied by changing the value of design parameters. Effect of each design parameter on return loss (S11) and gain characteristic of the antenna design is observed and the optimal design parameters are taken. Both simulation and measurement results of the proposed antenna design show a matched bandwidth and a return loss of less than -10 dB in the desired operation band of 670 MHz and 2750 MHz. as it can be seen from both simulation and experimental results, the proposed discone antenna design is a suitable solution for broad-band wireless communication applications.