VHF/UHF Wideband Slim Monopole Antenna with Distributed Matching Structures

Table 2

The comparisons with other works.

Reference	Antenna type	The methods to achieve the wideband characteristics	Bandwidth (MHz)	Size (mm^3)	Efficiency or gain
[11]	Monopole antenna	Top capacitive loading	200–600	290 × 290 × 300	−2–2 dBi
[12]	Monopole antenna	Sleeve structure	240–950	320 × 30 × 30	0.9–2.6 dBi
[16]	Dipole antenna	LR loading	30–512	1730 × 24 × 24	10–60%
[17]	Monopole antenna	RLC loading	30–520	1470 × 19 × 19	35–50%
[18]	Monopole antenna	Stubs loading	144, 310, 450	350 × 20 × 5	4.94, 4.87, 5.78 dBi
[19]	Monopole antenna	Helix loading	174–230	80 × 2 × 2	−12.4 dBi
This paper	Monopole antenna	Distributed matching structures	204–517	280 × 20 × 0.2	50–100%