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參數資料
| 型號： | ANT-ELE-S01-011 |
| 廠商： | Linx Technologies Inc |
| 文件頁數： | 2/2頁 |
| 文件大小： | 296K |
| 描述： | ELEMENT STUB FOR MAG-1 BASES |
| 產品目錄繪圖： | ANT-ELE-S01-011 |
| 標準包裝： | 1 |
| 系列： | MAG1 元件 - 天線因數 |
| 天線類型： | 鞭狀 |
| 頻帶數目： | 1 |
| 頻率： | 2.4GHz |
| VSWR： | 1.5 |
| 包裝： | 散裝 |
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Data Sheet ANT-ELE-S01-011
SWR
Reflected Power
3:1
2:1
1:1
25%
11%
0%
1.267
2.45GHz
2.55GHz
2.35GHz
VSWR Graph
What is VSWR?
The Voltage Standing Wave Ratio (VSWR) is a measurement of how well
an antenna is matched to a source impedance, typically 50-ohms. It is
calculated by measuring the voltage wave that is headed toward the load
versus the voltage wave that is reflected back from the load. A perfect
match will have a VSWR of 1:1. The higher the first number, the worse the
match, and the more inefficient the system. Since a perfect match cannot
ever be obtained, some benchmark for performance needs to be set. In
the case of antenna VSWR, this is usually 2:1. At this point, 88.9% of the
energy sent to the antenna by the transmitter is radiated into free space
and 11.1% is either reflected back into the source or lost as heat on
the structure of the antenna. In the other direction, 88.9% of the energy
recovered by the antenna is transferred into the receiver. As a side note,
since the :1 is always implied, many data sheets will remove it and just
display the first number.
How to Read a VSWR Graph
VSWR is usually displayed graphically versus frequency. The lowest point
on the graph is the antennas operational center frequency. In most cases,
this will be different than the designed center frequency due to fabrication
tolerances. The VSWR at that point denotes how close to 50-ohms the
antenna gets. Linx specifies the recommended bandwidth as the range
where the typical antenna VSWR is less than 2:1.
159 Ort Lane, Merlin, OR, US 97532
Phone: +1 541 471 6256
Fax: +1 541 471 6251
www.linxtechnologies.com
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