An Omni-Directional Wideband Patch Antenna with Parasitic Elements for Sub-6 GHz Band Applications

Table 2

Comparison table.

Index

Reference No.

This work

[22]

[23]

[24]

[25]

[26]

[27]

[28]

[29]

[30]

[31]

[32]

[33]

[34]

Physical size (L × W × h) mm^3

40 × 60 × 1.52

46 × 46 × 3.175

78 × 58 × 0.9

40 × 30 × 1.6

22.5 × 10.7 × 1.6

45 × 45 × 1.0

48 × 35 × 1.62

36 × 36 × 4

34 × 34 × 3.2

150 × 80 × 0.8

40 × 40 × 1.575

Electrical size

0.27λ × 0.4λ

0.37λ × 0.37λ

0.39λ × 0.39λ

0.99λ × 0.73 λ

0.44λ × 0.33λ

1.19λ × 1.19λ

0.26λ × 0.12λ

0.27λ × 0.27 λ

0.3λ × 0.22λ

0.34λ × 0.34λ

0.35λ × 0.35λ

0.64λ × 0.34λ

0.97λ × 0.97λ

0.36λ × 0.36λ

Substrate material

Rogers RO4350 B ()

Rogers RT ()

ECCOSTOCK HIK ()

PET )

FR-4

FR-4

FR-4 )

FR-4 )

FR-4 )

FR-4 )

FR-4 )

FR-4 )

Rogers RO4003C), Taconic TLX-9)

Rogers RT 5880 ()

Operating frequency range (GHz)

2–5

2.44–2.54, 3.19–3.55

3.30–4.38

3.89–5.9

3.28–4.0

2.75–5.45

3.4–4.2

1.82–2.92, 3.15–4.75

1.85–3.8

2.8–3.81

∼3.1–3.75

∼1.27–1.5, ∼2.2–2.5, ∼3.5–4.2

3.24–3.8

2.67–4.20

Maximum gain (dB)

7.14

∼4

6

3

2.5

8.4

2.3

7.5

4.044

4.08

3.8

5

10.43

3.92

BW (GHz)

3

0.1, 0.36

1.08

2.01

0.72

2.7

0.8

0.1, 1.6

1.95

1.01

0.65

0.23, 0.3, 0.7

0.56

1.53

Radiation efficiency (%)

80

—

—

∼80

—

∼80

73

—

92

—

—

80

—

95

Applied methods

Metamaterial, slot

ENGTL metamaterials

DRA, parasitic

CPW fed

Partial ground

Balun

Log-periodic patch

Non-centred L-shaped

Metamaterial

Aperture coupled

Slot, PIN diode

Stub, open slot

Metasurface

Parasitic, partial ground

Not mentioned.