표 3. | Table 3. 이전 관련 연구 결과들과 비교 | Performance comparison to the previous works.

Reference / year	Size (mm×mm)	Size ratio (%)	Insertion loss (dB)	Center frequency (GHz)	Bandwidth (%)
Ref. [6] / 2017	140×140	377	−7.7±1.2	2.4	8.3
Ref. [7] / 2017	190×240	407	−6.7±0.7	2.401	2.2
Ref. [8] / 2019	96×96	179	−7	2.42	8.3
Ref. [9] / 2019	170×170	560	−9.2±0.5	2.4	37.5
Ref. [10] / 2020	70×73.7	100	−7±2	3.5	15.7
This work	40×38.6	30	−7.5±1.3	3.85	40