Wood zone plate fishnet metalens | EPJ Applied Metamaterials

Advanced Metamaterials in Microwaves, Optics and Mechanics

Open Access

Table 1.

Focal properties and radiation pattern parameters

	Frequency, GHz	FL ¹, mm	FWHM², mm		DF³, mm	HPBW⁴, °		FNBW⁵, °		FSLL⁶, °
		E-plane	E-plane	H-plane	E-plane	E-plane	H-plane	E-plane	H-plane	E-plane	H-plane
		H-plane			H-plane
Analytical	99	22.3	2	2	7.8	–	–	–	–	–	–
	λ₀ = 3.03 mm	7.4 λ₀	0.66 λ₀	0.66 λ₀	2.6 λ₀	–	–	–	–	–	–
Simulation	99	22.5	2	2	7.8	4	3.6	14	10	−25	−19
	λ₀ = 3.03 mm	7.4 λ₀	0.66 λ₀	0.66 λ₀	2.6 λ₀	4	3.6	14	10	−25	−19
Experimental	99	23	2.1	2.1	9.64	4	3.6	9.5	9.5	−14	−12
	λ₀ = 3.03 mm	7.6 λ₀	0.69 λ₀	0.69 λ₀	3.2 λ₀	4	3.6	9.5	9.5	−14	−12

FL is the focal length.

FWHM is the full width at half maximum.

DF is the depth of focus.

⁴

HPBW is the half-power beam width.

⁵

FNBW is the first null beam width.

⁶

FSLL is the first side-lobe level.

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