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Wednesday, November 15 • 14:00 - 14:20
Bandwidth analysis of electrically small antennas using Bode-Fano and Q factor theorems

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A method incorporating Bode-Fano integrals is proposed to evaluate potential bandwidth of small antennas and provide a particular strategy for bandwidth improvement. Moreover, the optimum tolerance of gain-bandwidth limitation for loads, which are presented in Darlington canonical form, can be calculated using Bode-Fano theory. In this paper, Fano limits for rectangular and E-shaped antennas for TM01 mode have been calculated analytically. In other words, the Bode-Fano theory has been applied to the lumped equivalent circuit of microstrip antennas in order to calculate the maximum achievable return loss-bandwidth. The result of applying this theory indicates that creating slots on the microstrip patch antenna despite its advantages can decrease the potential bandwidth of the antenna because Fano integrals reveal the invariant relation between maximum achievable return loss-bandwidth and overall volume of the antenna.

Wednesday November 15, 2017 14:00 - 14:20
Salon C 180 Portugal Cove Rd, St. John's, NL A1B 2N4, Canada