Dielectric Resonator Antennas: Basic Concepts, Design Guidelines, and Recent Developments at Millimeter-Wave Frequencies

Table 2

Roots of the first-order derivative of the Bessel functions of the first kind, .

	3.831	7.015	10.173	13.323	16.470
	1.841	5.331	8.536	11.706	14.863
	3.054	6.706	9.969	13.170	16.347