TWO-PROBE EXCITED CIRCULAR RING ANTENNA FOR MIMO APPLICATION | Zendy

Monai Krairiksh | Zendy; Panisa Keowsawat | Zendy; Chuwong Phongcharoenpanich | Zendy; Sompol Kosulvit | Zendy

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TWO-PROBE EXCITED CIRCULAR RING ANTENNA FOR MIMO APPLICATION

Author(s) -

Monai Krairiksh,

Panisa Keowsawat,

Chuwong Phongcharoenpanich,

Sompol Kosulvit

Publication year - 2009

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier09091607

Subject(s) - excited state , ring (chemistry) , antenna (radio) , mimo , physics , telecommunications , acoustics , optics , computer science , chemistry , atomic physics , channel (broadcasting) , organic chemistry

This paper presents the analysis and design of a two-probe excited circular ring antenna. The analysis is conducted by using induced emf method and transmission line model. The design process is to choose a suitable radius of the ring for a single probe antenna. Then, the suitable probe length and ring length are determined for the two- probe antenna. Finally, isolation between the two probes is enhanced by insertion of an inductor coil between the probes. The operational characteristics of the prototype antenna at the frequency of 5.2GHz are measured and compared with calculation results. It is evident that these results are in good agreement. The antenna achieved isolation in excess of 20dB and VSWR less than 2 : 1 over the desired bandwidth and a bidirectional radiation pattern with 4dBi gain. This antenna is suitable for Multiple-Input Multiple-Output (MIMO) system covering a long and narrow environment.

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