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Data Sheet ANT-2.4-PW-QW
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.
SWR
Reflected Power
3:1
2:1
1:1
25%
11%
0%
2450MHz
2550MHz
2350MHz
1.373
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相关代理商/技术参数
ANT-2.4-PW-QW-UFL
功能描述:2.4GHz Whip, Straight RF Antenna 2.35GHz ~ 2.6GHz 1.6dBi Connector, U.FL Panel Mount 制造商:linx technologies inc. 系列:PW 包装:托盘 零件状态:有效 频率组:UHF（2 GHz ~ 3 GHz） 频率（中心/带）:2.4GHz 频率范围:2.35GHz ~ 2.6GHz 天线类型:鞭状，直形 频带数:1 VSWR:1.9 回波损耗:- 增益:1.6dBi 功率 - 最大值:- 特性:- 端接:连接器，U.FL 侵入防护:- 安装类型:面板安装 高度（最大值）:4.134"（105.00 mm） 应用:- 标准包装:30
ANT-2.4-USP
功能描述:天线 MicroSplatch Planar Antenna 2.45GHz,SMD
RoHS:否 制造商:Molex 技术类型:Cellular Antenna 频率: 带宽: 尺寸:106.7 mm L x 13 mm W
ANT-2.4-USP-T
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功能描述:天线 2.4 GHz Antenna WRT Monopole RP-SMA
RoHS:否 制造商:Molex 技术类型:Cellular Antenna 频率: 带宽: 尺寸:106.7 mm L x 13 mm W
ANT-2.4-WRT-MON-SMA
功能描述:天线 2.4 GHz Antenna WRT Monopole SMA
RoHS:否 制造商:Molex 技术类型:Cellular Antenna 频率: 带宽: 尺寸:106.7 mm L x 13 mm W
ANT-2.4-WRT-MON-UFL
功能描述:天线 2.4 GHz Antenna WRT Monopole UFL
RoHS:否 制造商:Molex 技术类型:Cellular Antenna 频率: 带宽: 尺寸:106.7 mm L x 13 mm W
ANT-2.4-WRT-RPS
功能描述:天线 2.4GHz Compact Ant. RPSMA Connector
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ANT-2.4-WRT-SMA
功能描述:天线 2.4GHz Compact Ant. SMA Connector RoHS:否 制造商:Molex 技术类型:Cellular Antenna 频率: 带宽: 尺寸:106.7 mm L x 13 mm W