Investigation of a Random-Fractal Antenna Based on a Natural Tree-Leaf Geometry

Table 1

Main measured resonance frequencies.

(a)

	A0
F (GHz)	1.64	2.8	4.05	5.25
S11 (dB)	−2.8	−2.1	−3.7	−34.5

(b)

	A1
F (GHz)	1.6	2.76	3.07	3.73	4.41	5.28	5.72
S11 (dB)	−2.23	−2	−22	−13.04	−5	−14.66	−5.5

(c)

		A2
F (GHz)	1.45	2.03	2.38	2.7	3.97	4.29	5.20
S11 (dB)	−25.0	−16.9	−3.14	−17.3	−18.3	−12.0	−21.2

(d)

	A3
F (GHz)	1.38	2.15	2.62	3.13	3.55	4.06	4.37	5.32	5.85
S11 (dB)	−15.0	−15.4	−21.2	−4.7	−24.1	−12.3	−24.5	−21.3	−16.5