Optimized Ultrawideband and Uniplanar Minkowski Fractal Branch Line Coupler

Table 3

Frequency and size comparison between 3 dB couplers and power dividers.

Reference	Frequency	Size	Size
Number	Range [GHz]	[mm × mm]	(Electrical)
[1]	3.1–10.6	40 × 50	0.9λ × 1.1λ
[2]	3.1–10.6	35 × 50	0.8λ × 1.1λ
[5]	3.1–10.6	40 × 50	0.9λ × 1.1λ
[6]	3.1–10.6	Two × 20 × 30	Two × 0.45λ × 0.7λ
[7]	3.1–10.6	Two × 20 × 30	Two × 0.45λ × 0.7λ
This work	3.1–10.6	30 × 45	0.7λ × 1.0λ