Specification
Center frequency: 5.8 GHz
Bandwidth: 660 MHZ (5.47-6.13ghz)
Match: S11 < -20 dB, VSWR < 1.22 (at the center frequency)
Axial ratio: < 1.3
DBi antenna gain: 9.4
Half power beam width: 55 ° (horizontal and vertical)
Radiation efficiency: 83.5%
These values are based on simulation and the actual measurements are as follows (they are very similar).
Due to the change of the FR4 dielectric constant, the center frequency may be transferred between batches.
And not all FR4 brands have the same dielectric constant.
The frequency conversion to 100 MHz is normal.
Connector: SMA, RP-SMA (Optioneel)
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Simulatie |
Gemeten |
Commentaar |
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Center frequentie |
5.8 GHz |
5.8 GHz ± 100 MHz |
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|
Bandbreedte |
660 MHz (5.47 - 6.13 GHz) |
950 MHz ± 100 MHz |
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Wedstrijd |
S11 < -30 dB, VSWR < 1.065 |
S11 < -20 dB, VSWR < 1.22 |
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Axiale verhouding |
1.05 (0.38 dB) |
1.10 (0.83 dB) |
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Antenne gain |
14.4 dBi |
14.0 dBi |
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Half power openingshoek |
30 ° |
30 ° |
Horizontale en verticale |
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Straling efficiëntie |
75% |
74% |
Simulatie diagram:
Kenmerken:
* Goede Straling efficiëntie. Meest FR4-based patches zijn zeer efficiënt omdat FR4 is zeer lossy op 5.8 GHz. Daarnaast meest array antennes hebben hogere verliezen in de feed netwerk. Dit ontwerp gebruikt in combinatie patches om de feed netwerk eenvoudig en verminderen deze verliezen.
* Goede as verhouding, niet alleen loodrecht op de patch maar ook excentriek.
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