The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis Microstrip Patch Antenna of MIMO Structure

MIMO 구조의 마이크로스트립 패치 안테나 분석

  • Kim, Sun-Woong (Chosun University Department of Information and Communication Engineering) ;
  • Park, Jung-Jin (Chosun University Department of Information and Communication Engineering) ;
  • Choi, Dong-You (Chosun University Department of Information and Communication Engineering)
  • Received : 2015.04.02
  • Accepted : 2015.05.14
  • Published : 2015.05.31
Download PDF
⟨ Previous Next ⟩

Abstract

This study proposed a patch antenna with a MIMO structure which is applicable for wireless communication equipment by combining a single patch antenna with a multi port. The proposed MIMO patch antenna was designed through the TRF-45 substrate with a relative permittivity of 4.5, loss tangent equal to 0.0035 and dielectric high of 1.6 mm, and the center frequency of the antenna was 2.45 GHz in the ISM (Industrial Scientific and Medical) band. The proposed MIMO patch antenna had a 500 MHz bandwidth from 2.16 ~ 2.66 GHz and 24.1% fractional bandwidth. The return loss and VSWR were -62.05 dB, 1.01 at the ISM bandwidth of 2.45 GHz. The Wibro band of 2.3 GHz was -17.43 dB, 1.33, the WiFi band of 2.4 GHz was -31.89 dB, 1.05, and the WiMax band of 2.5 GHz was -36.47 dB, 1.03. The radiation patterns included in the bandwidth were directional, and the WiBro band of 2.3 GHzhad a gain of 4.22 dBi, the WiFi band of 2.4 GHz had a gain of 4.12 dBi, the ISM band of 2.45 GHz had a gain of 4.06dBi, and the WiMax band of 2.5 GHz had a gain of 3.9 6dBi.

본 논문에서는 단일 패치 안테나에 다중 포트를 결합하여 무선 통신 기기의 응용에 적합한 MIMO구조의 패치 안테나를 제안하였다. 제안된 MIMO 패치 안테나는 비 유전율 4.5, 손실 탄젠트 0.0035, 두께 1.52 mm를 갖는 TRF-45 기판을 통해 설계되었으며, 안테나의 중심 주파수는 ISM (Industrial Scientific and Medical) 대역의 2.45 GHz이다. 제안된 MIMO 패치 안테나는 2.16 ~ 2.66 GHz 대역에서 500 MHz의 대역폭을 보였으며, 비 대역폭은 24.1%이다. 안테나의 반사손실 및 정재파비 결과는 제안된 대역에서 2.45 GHz의 ISM 대역에서 -62.05 dB, 1.01이다. 대역폭에 포함된 각각의 대역은 2.3 GHz의 WiBro 대역은 -17.43 dB, 1.33, 2.4 GHz의 WiFi 대역은 -31.89 dB, 1.05, 2.5 GHz의 WiMax 대역은 -36.47 dB, 1.03이다. 대역폭에 포함된 대역의 방사패턴 분석은 지향성의 패턴을 보였으며, 2.3 GHz의 WiBro 대역은 4.22 dBi, 2.4 GHz의 WiFi 대역은 4.12 dBi, 2.45 GHz의 ISM 대역은 4.06 dBi, 2.5 GHz의 WiMax 대역은 3.96 dBi의 이득을 보였다.

Keywords

References

  1. J. T. Y. Ho, "Analytical expression for average SNR of correlated dual selection diversity system," 3rd Australian Commun. Theory Workshop, Feb. 2002.
  2. M. Cabedo, E. Antonino, M. Ferrando, V. M. Rodrigo, A. Vila, J. M. Molina, and L. Juan, "Compact planar antenna with multiple ports for MIMO and diversity applications," Waves, pp. 16-29, 2010.
  3. S. Shrestha, S. K. Noh, and D.Y. Choi, "Comparative study of antenna design for RF energy harvesting," Int. J. Antennas and Propag., vol. 2013, pp. 1-10, 2013.
  4. D. Y. Choi, S. Shrestha, J. J. Park, and S. N. Noh, "Design and performance of an efficient rectenna incorporating a fractal structure," Int. J. Commun. Syst., vol. 2014, no. 27, pp. 1-19, Jul. 2014.
  5. E. O. Hammerstad, "Equations for microstrip circuit design," in Proc. Fifth European Microwave Conf., pp. 268-272, Sep. 1975.
  6. Constantine A. Balanis, Antenna Theory Analysis and Design, Third edition, A John Wily and Sons, INC. Publication.
  7. http://www.ansys.kr/
  8. K. Chang, RF and Microwave Wireless System, WILEY, pp. 74-75, 2000.
  9. D. Y. Choi, S. W. Kim, J. J. Park, M. A. Jeong, and S. R. Lee, "Design and implementation of tapered slot antenna for ship's indoor location-aware system," J. KICS, vol. 39C, no. 12, pp. 1307-1313, Dec. 2014.
  10. K. J. Jeon, B. H. Ko, S. C. Myung, S. R. Lee, and K. S. Kim, "Protograph-based block LDPC code design for marine satellite communications," J. KICS, vol. 39C, no. 7, pp. 515-520, Jul. 2014. https://doi.org/10.7840/kics.2014.39C.7.515
  11. K. H. Lee, E. H. Kwak, and B. G. Kim, "Effect of substrate thickness, perforation position and size on the bandwidth and radiation characteristics of a proximity coupled perforated microstrip patch antenna," J. KICS, vol. 39A, no. 6, pp. 301-321, Jun. 2014.