Parameter variation | Resonant frequency (GHz) | Impedance bandwidth (MHz) | Reflection coefficient (dB) |
---|---|---|---|
Conventional RPA | 4.02 | 30 | −10.64 |
RPA with partial ground plane | 3.88 | 250 | −53 |
RPA with hexagonal partial ground plane | 3.64 | 5.3 | −14.56 |
RPA with polygon partial ground plane (proposed) | 3.41 and 3.83 | 700 | −26.17 and −31.15 |
Variation of width of strip feed (Wf) in |
|||
0.5 | 3.41 and 3.83 | 700 | −26.17 and −31.15 |
1 | 3.69 | 650 | −38.27 |
1.5 | 3.69 | 600 | −38 |
2 | 3.66 | 550 | −27.61 |
2.5 | 3.66 | 500 | −22.51 |
3 | 3.66 | 479 | −21.30 |
Parameters | |||||
---|---|---|---|---|---|
References | Bandwidth (GHz) | Center frequency (GHz) | Patch size | Substrate parameters | Maximum gain (dBi) |
|
2.6-6 | 4.3 | 0.78 |
∈ |
∽9 |
|
2.5-4.9 | 3.7 | 0.61 |
∈ |
∽4 |
|
2.3-5.2 | 3.7 | 0.58 |
∈ |
∽3 |
|
4.0-9.7 | 6.8 | 0.68 |
∈ |
∽4 |
|
5.1-7.5 | 6.3 | 0.42 |
∈ |
∽2.8 |
Proposed antenna PSG-RPA2 | 3.3-4.0 | 3.65 | 0.43 |
∈ |
∽2.5 |
Parameters | Simulated results | Measured results |
---|---|---|
Lower cut-off frequency ( |
3.28 | 3.3 |
Higher cut-off frequency ( |
4.00 | 4.02 |
Bandwidth (MHz) | 720 | 720 |
VSWR (at 3.41 GHz) | 1.55 | 1.14 |
VSWR (at 3.83 GHz) | 1.70 | 1.17 |
Minimum reflection coefficient (dB) | −31.15 | −34.98 |
Parameters | Lp | Wp | Wf | Lf | Lg | Wg | No. of polygon segments in PSG-RPA2 |
---|---|---|---|---|---|---|---|
Dimension | 36 mm | 16 mm | 0.5 mm | 2 mm | 20 mm | 28 mm | 18 |
Parameters | PSG-RPA1 | PSG-RPA2 |
---|---|---|
Lower cut-off frequency ( |
3.25 GHz | 3.28 GHz |
Higher cut-off frequency ( |
3.75 GHz | 4.00 GHz |
Bandwidth | 500 MHz | 720 MHz |
VSWR (at 3.41 GHz) | 1.95 | 1.55 |
VSWR (at 3.83 GHz) | 1.66 | 1.70 |
Gain | 2.3 dB | 2.5 dB |
Reflection coefficient | −13.35 dB | −31.15 dB |