Table 2 Comparison between the primitive BLC, meandered BLC, and proposed BLC.

From: Compact dual band crossover for 5G low and mid band applications using a metamaterial branch line coupler

Structure

Freq (\(f_1/f_2\))

(GHz)

Size reduction (\(\%\))

\(S_{11}\)(dB)

\(S_{21}\) (dB)

\(S_{31}\) (dB)

\(S_{41}\) (dB)

Phase error (\(^\circ\))

Primitive BLC

0.7/3.5

0.00

− 27.3/− 22.8

− 2.8/− 2.6

− 3.4/− 3.3

− 30/− 26.4

− 0.3/1.5

Design in17

0.7/3.5

88.40

− 29/− 26.1

− 3.61/− 2.89

− 2.65/− 3.34

− 29.1/− 26.4

− 1/0.7

Proposed BLC

0.7/3.5

90.56

− 18.9/− 16

− 3.06/− 3.52

− 3.09/− 2.88

− 19/− 16.6

− 1.2/1

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