Low-Cost Lens Antenna Design for Microwave Moisture Detection

Table 2

Performance comparison among different antennas.

Reference	Bandwidth(GHz)	Maximumrealizedgain (dBi)	Antennasize (mm)	Structuralcomplexity	Lens	Application
[1]	2.45	Unknown	140 × 140	Simple	No	Moisture content measuring
[7]	0–30	7	50 × 66.4	Simple	Yes	High dynamic-range imaging
[8]	1.54–7	9.8	88 × 75	Simple	No	Breast phantom measurement
[11]	2–8, 8–40	12.1	130 × 130 × 243	Complex	No	Radio-frequency simulation system
[13]	1.38–13.8	12.6	182 × 96 × 6.1	Simple	No	Communication and radar technologies
[18]	4–40	7.8	80 × 80 × 94	Simple	No	Mobile infrastructure
[19]	4–13	9.2	40 × 4 × 0.8	Complex	No	High dynamic-range imaging
This work	5-6	16.5	100 × 85 × 1.6	Simple	Yes	Moisture content measuring