- 您现在的位置：买卖IC网 > PDF目录18796 > ANT-418-MHW-SMA-S (Linx Technologies Inc)ANTENNA 418MHZ 1/4WAVE SMA 79" PDF资料下载
参数资料
| 型号： | ANT-418-MHW-SMA-S |
| 厂商： | Linx Technologies Inc |
| 文件页数： | 2/3页 |
| 文件大小： | 225K |
| 描述： | ANTENNA 418MHZ 1/4WAVE SMA 79" |
| 标准包装： | 50 |
| 系列： | MHW - Antenna Factor |
| 天线类型： | 中心馈电，1/4 波，固定式 |
| 频带数目： | 1 |
| 频率： | 418MHz |
| VSWR： | 1.5 |
| 端子： | SMA |
| 安装类型： | 粘贴安装 |
| 高度（最大）： | 0.35"（9.0mm） |
| 包装： | 散装 |
2
by
Data Sheet ANT-418-MHW-xxx-x
SWR
Reflected Power
3:1
2:1
1:1
25%
11%
0%
418MHz
473MHz
353MHz
1.687
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 re ected back from the load. A perfect
match will have a VSWR of 1:1. The higher the rst number, the worse the
match, and the more inef cient 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 re ected 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 rst 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 speci es the recommended bandwidth as the range
where the typical antenna VSWR is less than 2:1.
相关PDF资料 |
PDF描述 |
|---|---|
| 3FD-348 | TRANSFORMER DUAL 24VAC .100A |
| 3FD-328 | TRANSFORMER DUAL 14VAC .170A |
| FXO-LC736R-200 | OSC 200 MHZ 3.3V LVDS SMD |
| 601XR-18 5R | LEAD TEST XR-BANAPLG 18" SET/5 |
| 601XR-18 5B | LEAD TEST XR-BANAPLG 18" SET/5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ANT-418-PW-LP | 功能描述:天线 Perm Mnt Reducd Ht 1/4 Wave Whip 418MHz 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-418-PW-QW | 功能描述:天线 Permanent Mount 1/4 Wave Whip 418MHz 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-418-PW-QW-UFL | 功能描述:418MHz Whip, Straight RF Antenna 380MHz ~ 450MHz 2.9dBi 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（300 MHz ~ 1 GHz） 频率（中心/带）:418MHz 频率范围:380MHz ~ 450MHz 天线类型:鞭状，直形 频带数:1 VSWR:1.9 回波损耗:- 增益:2.9dBi 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）:7.008"（178.00mm） 应用:- 标准包装:24 |
| ANT-418-PW-RA | 功能描述:天线 Perm Mnt Swvl Angle 1/4 Wave Whip 418MHz 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-418-SP | 功能描述:天线 SMD Planar Ant. 418MHz 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 |
发布紧急采购，3分钟左右您将得到回复。