Abstract Currently, we are living in the world of invisible radio waves with a variety of frequencies. As today's society is rapidly changing to an era of wireless communication, the importances of antenna(especially, small patch antenna) are increasing according to the coming of wireless mobile communication society. In this paper, we design a small patch antenna which can support the functions of DMB and GPS through devices like cellular phone. The main feature and contribution of the designed patch antenna are as follows. First, the patch antenna is designed by HFSS and the ceramic materials for the patch antenna is utilized. Second, we obtain the patch antenna with reduced size and increased profit of reception, and the designed patch antenna can be applied for small devices. Key Words : Patch antenna, HFSS, Ceramic materials, Anechoic Chamber * 준회원, 홍익대학교 컴퓨터정보통신공학과 ** 종신회원, 홍익대학교 컴퓨터정보통신공학과 접수일자 2012년 5월17일, 수정완료 2012년 5월 30일,게재확정일자 2012년 6월 8일.Received: 17 May, 2012, Revised: 30 May, 2012, Accepted: 8 June, 2012