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| 型号： | ANT-868-CW-HW_ |
| 厂商： | Linx Technologies Inc |
| 文件页数： | 2/2页 |
| 文件大小： | 259K |
| 描述： | ANTENNA 868MHZ 1/2 WAVE DIPOLE |
| 产品目录绘图： | ANT-xxx-CW-HW |
| 标准包装： | 1 |
| 系列： | HWR - Antenna Factor |
| 天线类型： | 鞭状：1/2 波，旋转式，倾斜（直角） |
| 频带数目： | 1 |
| 频率： | 868MHz（853MHz ~ 883MHz） |
| VSWR： | 1.9 |
| 端子： | RP-SMA |
| 安装类型： | 连接器 |
| 高度（最大）： | 5.33"（135.5mm） |
| 包装： | 散装 |
| 其它名称： | ANT-868-CW-HW ANT-868-CW-HW_-ND |
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Data Sheet ANT-868-CW-HW
VSWR
Reflected Power
3:1
2:1
1:1
25%
11%
0%
918MHz
818MHz
1.517
868MHz
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
相关PDF资料 |
PDF描述 |
|---|---|
| ANT-868-CW-HWR-RPS | ANTENNA 868MHZ 1/2 WAVE RP/SMA |
| ANT-868-CW-QW | ANTENNA 868MHZ 1/4 WAVE WHIP |
| ANT-868-CW-RAH | ANTENNA 868MHZ RA 1/4WAVE RPSMA |
| ANT-868-CW-RCS | ANTENNA 868MHZ RA 1/4 WAVE RPSMA |
| ANT-868-CW-RH | ANTENNA REFERENCE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ANT-868-CW-HW_ | 功能描述:ANTENNA 868MHZ 1/2 WAVE DIPOLE RoHS:是 类别:RF/IF 和 RFID >> RF 天线 系列:HWR - Antenna Factor 标准包装:1 系列:* |
| ANT-868-CW-HWR-RPS | 功能描述:天线 RPSMA Tilt Swivel 1/2 Wave Whip 868MHz 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-868-CW-HWR-SMA | 功能描述:天线 SMA Tilt Swivel 1/2 Wave Whip 868MHz 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-868-CW-HW-SMA | 功能描述:天线 SMA 1/2 Wave Dipole Whip 868MHz 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-868-CW-QW | 功能描述:天线 RPSMA Connectorized 1/4 Wave Whip 868MHz 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 |
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