抄録
Offer Organization: Japan Society for the Promotion of Science, System Name: Grants-in-Aid for Scientific Research, Category: Grant-in-Aid for Scientific Research (C), Fund Type: -, Overall Grant Amount: - (direct: 2700000, indirect: 810000)
An analytical model for multi-band antennas, realized with embedded lumped elements, has been derived. With the obtained formulae, an accurate design method to develop multi-band antennas for arbitrary bands over a short term is clarified. With the method, dual-band antennas for 2.5/5 GHz bands and 0.86/2 GHz band have been developed. In addition, frequency reconfigurable dual-band antennas are demonstrated. Furthermore, to design radiation patterns, the mode-transfer behavior in the frequency range was analyzed. With the analysis, antennas appropriate for MIMO applications were designed and fabricated. Under the favor of the designed unidirectional patterns, correlation coefficients in 2.5 and 5 GHz bands were shown to be reduced. The reduction is expected to improve the data transmission rate by 2 bit/Hz.