A Compact Triple Band EBG Using Interdigital Coplanar Waveguide Structure for Antenna Gain Enhancement

Table 3

Comparison of the presented antenna with reference EBG unit cell and antennas.

Reference number	No. of bands (structure shaped)	Freq.(GHz)	Unit cell size (mm^3)	Overall size (mm^3)	No. of unit cell array	IBW (%)	Measurement gain (dB)
[11]	1 (fractal)	11.35	11 × 11 × 1.6	77 × 77 × 1.6	7 × 7	7.3	-
	1 (fork like)	11.5	16 × 16 × 1.6	112 × 112 × 1.6		7.0
	1 (spiral)	1.95	10 × 10 × 1.6	70 × 70 × 1.6		0.3
[12]	1(ID-UC)	2.35	7.3 × 7.3 × 1.5	14.6 × 36.5 × 1.5	2 × 5	46	-
[13]	3 (double slotted)	2.42–2.95	5 × 5 × 2.74	15 × 15 × 2.74	3 × 3	19.70
	3 (triple side slotted)	5.82–6.30	5 × 5 × 2.74	15 × 15 × 2.74	3 × 3	7.80
		8.27–9.28				6.20
		4.29–4.65				8.00
		5.56–6.28				10.38
		7.90–7.94				4.30
[16]	2 (slot ant. fed by CPW)	2.50–5.30	76 × 61 × 0.508	76 × 93 × 0.508	1	78.95	-
		13.5–16.3				18.79	-
[20]	1 (interdigital and inductive strip)	2.44–2.51	7 × 8.1 × 4.3	28.3 × 44.8 × 4.3	3 × 4	3.04	7.0
[23]	4 (slot ant. with spiral stub and interdigital CPW feed)	1.72–2.0	23.25 × 27.5 × 1.6	23.25 × 40 × 1.6	1	15.04	1.92
		2.34–2.63				11.66	2.03
		3.54–3.95				10.94	2.16
		5.10–5.32				4.21	2.36
[25]	1 (interdigital cap. loaded slot)	2.45	16.3×3.9	16.3×3.9	1	18.7	2.075
[29]	1 (square patch AMC substrate and PRS superstrate)	14.0	4.5 × 4.5 × 1.13	150 × 150 × 11.3	32 × 32	>30	19.0
[30]	2 (EBG with circular slot)	3.53–3.87	4.8 × 3.0 × 1.27	33 × 21 × 1.27	4 × 6	8.9	6.71
		4.35–4.69				7.52	4.58
ICPW-EBG proposed	3 (ICPW)	1.8 2.45	18 × 18 × 3.2	181.8 × 181.8 × 24.2	10 × 10	40.64 30.72 43.82	8.72 8.56 8.10
		3.7