Ref. Type substrate Operating
Freq. (GHz) Fractional
Bandwidth (S11 = -10dB) Size (mm × mm) Loss Error (LE)
(dB) PD Error (Deg)
[5] FR-4 3.5 30.22% 27.2 × 16.5 ± 0.9dB -5°
[32] Rogers RO4003 3.22 5% 16.5 × 11.3 ± 1dB -3o
[33] FR-4 3.5 6.57% 23.5 × 17.5 ± 1.7dB -4o
[34] Rogers RT5880LZ 3.5 30.81% 22 × 24 ± 0.9dB -5o
[35] FR-4 3.5 14.6% 16 × 12 ± 0.9dB -1o
[36] Rogers RO4003 3.5 17% 10.5 × 15.5 ± 0.5dB -1.7o
[This
work]
2023 Rogers RT5880LZ 3.5 33.34% 21.0 × 23.0 ± 0.1dB -1o