In this paper, a 4-port broadband mobile phone multiple input multiple output (MIMO) antenna is designed and implemented for use in femto cell communications. The assembly consists of 4 antennas with one main antenna that covers the entire design band and 3 sub antennas that cover the data communication bands. Each of the antennas is located on the top and bottom corners of the bare board, and we tested them on a PC board with the same board ground circumstances as practical phone ground. The main antenna operates in the CDMA, GSM, LTE class 2~3 and class 33~34 service bands, and the sub antenna operates in the LTE class 1~4, and Wibro band for data communications. The voltage standing wave ratio (VSWR) was less than 3:1, and the maximum isolation between the antennas was -8.5dB over the entire design band. The average gains for the main antenna were measured from -2.48 to -0.54dBi, with efficiencies from 56.45 to 88.3% while those for the sub antennas were between -1.96 to -1.2dBi and 63.75 to 75.92%, respectively. The envelop correlation coefficient (ECC) for the MIMO system was under 0.148 over the entire data communications band.
보안공학연구지원센터(IJMUE) [Science & Engineering Research Support Center, Republic of Korea(IJMUE)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of Multimedia and Ubiquitous Engineering
간기
월간
pISSN
1975-0080
수록기간
2008~2016
등재여부
SCOPUS
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Multimedia and Ubiquitous Engineering Vol.11 No.2