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[天线]Stacked microstrip antenna for wideband and high gain

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0楼发表于: 2009-05-02 13:30:10

Stacked microstrip antenna for wideband and high gain
Nishiyama, E.1; Aikawa, M.1; Egashira, S.2 Source: IEE Proceedings: Microwaves, Antennas and Propagation, v 151, n 2, p 143-148, April 2004
ISSN: 13502417 CODEN: IMIPEP
Publisher: Institution of Engineering and Technology

Author affiliation:
1 Faculty of Science and Engineering, Saga University, 1 Honjo-machi, Saga-shi 840-8502, Japan
2 Sojo University, 4-22-1, Ikeda-machi, Kumamoto-shi 860-0082, Japan

Abstract: The behaviour mechanism of the stacked antenna is synthetically clarified for the first time by investigating the results calculated using the FDTD method. The stacked microstrip antenna has particular characteristics, such as a high gain or a wide bandwidth. When the size of the parasitic patch is nearly equal to the fed patch, and the distance between the fed patch and the parasitic patch is approximately 0.1 wavelength, the bandwidth is increased. When that distance is approximately half a wavelength, the gain enhancement is obtained. The wide bandwidth and the gain enhancement are considered synthetically by the detailed investigation of calculated results including the near-field distributions. It is shown that the wide bandwidth and the gain enhancement are caused by a two-frequency resonance and leaky ..

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