Compact Vitis vinifera-Inspired Ultrawideband Antenna for High-Speed Communications

Table 3

Comparative analysis of VBi-UWBA with the existing literature.

Ref	Size ()	Substrate	/ (GHz)	Peak gain (dB)	Rad. efficiency (%)
[14]	0.4 × 0.4	RT Duroid 5880	3/10.8	4.7	NR
[15]	0.5 × 0.4	FR4	3.1/10.6	5.2	NR
[16]	0.2 × 0.2	FR4	1.4/11.3	4.6	NR
[17]	0.4 × 0.4	Arlon Diclad 880A	1.79/28.02	8.0	NR
[1]	0.4 × 0.2	FR4	3/10.6	NR	NR
[8]	0.4 × 0.2	FR4	1.9/6.2	10.2	NR
[18]	0.3 × 0.2	FR4	1.8/12	4.0	78–96
[19]	0.4 × 0.4	FR4	2.8/14	5.0	75–90
[4]	0.3 × 0.3	FR4	0.5/1.5	2.81	NR
[7]	0.4 × 0.3	FR4	2.74/13	6.2dBi	NR
[20]	0.1 × 0.2	FR4	3.07–11.6	5.5	35–90
[21]	0.4 × 0.3	FR4	2.9/15	4.5	90
[22]	0.2 × 0.2	FR4	3/20	4.0	70
[23]	0.3 × 0.3	FR4	3.05/11.9	5.9	94^+
[24]	0.4 × 0.5	FR4	3.1/10.6	2.5	NR
This work	0.4 × 0.3	FR4	3.7/13.8	6.7	78–97

NR: not reported; indicates average value; ⁺indicates total value.