Compact, Slotted, Printed Antennas for Dual-Band Communication in Future Wireless Sensor Networks

Table 2

Values of parameters that determine the design of the four proposed dual-band PIFAs. All dimensions are in millimetres.

Dimension	K2	GK2	D-GK2	MK2
𝐿sub×𝑊gnd	57×37	54×35.8	54×36.2	60×33.6
𝐿gnd×𝑊gnd	40×37	40×35.8	40×36.2	40×33.6
𝐿PIFA×(𝑊PIFA+𝐿fs)	24.0×7.7	23.3×7.8	23.2×7.6	21.2×8.1
𝑊strip	3.1	3.1	3.1	3.1
𝑑fs	2.5	2.1	2.2	1.5
𝐿slot	10.3	8.9	8.9	6.7
𝐿PIFA	24.0	23.3	23.2	21.6
𝐿fs	2.4	1.4	1.5	1.5
𝑊slot	0.5	0.5	0.6	0.3
𝑊PIFA	5.3	6.4	6.1	6.6
𝑊short	0.5	0.4	0.4	0.4
𝑊feed	1.0	1.1	0.6	0.9
𝐿ind	6.2	6.1	6.4	6.2
𝑊ind	1.7	1.9	2.3	1.9

The first row denotes the extent of the PCB, the second row denotes the size of the ground plane, and the third one denotes the extent of the antenna element.