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參數資料
| 型號： | ANT-916-PML |
| 廠商： | Linx Technologies Inc |
| 文件頁數： | 2/2頁 |
| 文件大小： | 260K |
| 描述： | ANTENNA 916MHZ RA W/RG178 CABLE |
| 產品目錄繪圖： | ANT-xxx-PML |
| 標準包裝： | 50 |
| 系列： | PML - Antenna Factor |
| 天線類型： | 鞭狀：1/2 波，旋轉式，傾斜（直角） |
| 頻帶數目： | 1 |
| 頻率： | 916MHz（876MHz ~ 956MHz） |
| VSWR： | 1.9 |
| 端子： | 8.5" RG-178 |
| 安裝類型： | 底座安裝 |
| 高度（最大）： | 5.92"（150.3mm） |
| 包裝： | 散裝 |
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Data Sheet ANT-916-PML
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.
VSWR
Reflected Power
3:1
2:1
1:1
25%
11%
0%
916MHz
1016MHz
816MHz
1.131
相關PDF資料 |
PDF描述 |
|---|---|
| ANT-916-PW-LP | ANTEN 916MHZ PRMNT 1/4 WAVE WHIP |
| ANT-916-PW-QW | ANTEN 916MHZ PRMNT 1/4 WAVE WHIP |
| ANT-916-PW-RA | ANT 916MHZ PRMNT SA 1/4 WAV WHIP |
| ANT-916-WRT-SMA | ANTENNA 916MHZ WRT SERIES SMA |
| ANT-916-YG5-N | ANTENNA YAGI 916MHZ 5-ELEMENT |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ANT-916-PML-UFL | 功能描述:916MHz Whip, Tilt RF Antenna 881MHz ~ 951MHz -0.4dBi Connector, U.FL Connector Mount 制造商:linx technologies inc. 系列:- 包裝:散裝 零件狀態:有效 頻率組:UHF（300 MHz ~ 1 GHz） 頻率（中心/帶）:916MHz 頻率范圍:881MHz ~ 951MHz 天線類型:鞭狀，傾斜 頻帶數:1 VSWR:1.9 回波損耗:- 增益:-0.4dBi 功率 - 最大值:- 特性:- 端接:連接器，U.FL 侵入防護:- 安裝類型:連接器安裝 高度（最大值）:5.917"（150.30 mm） 應用:- 標準包裝:50 |
| ANT-916-PW-LP | 功能描述:天線 Perm Mnt Reducd Ht 1/4 Wave Whip 916MHz RoHS:否 制造商:Molex 技術類型:Cellular Antenna 頻率: 帶寬: 尺寸:106.7 mm L x 13 mm W |
| ANT-916-PW-QW | 功能描述:天線 Permanent Mount 1/4 Wave Whip 916MHz RoHS:否 制造商:Molex 技術類型:Cellular Antenna 頻率: 帶寬: 尺寸:106.7 mm L x 13 mm W |
| ANT-916-PW-QW-UFL | 功能描述:916MHz Whip, Straight RF Antenna 865MHz ~ 965MHz 1.8dBi Connector, U.FL Panel Mount 制造商:linx technologies inc. 系列:PW 包裝:托盤 零件狀態:有效 頻率組:UHF（300 MHz ~ 1 GHz） 頻率（中心/帶）:916MHz 頻率范圍:865MHz ~ 965MHz 天線類型:鞭狀，直形 頻帶數:1 VSWR:1.9 回波損耗:- 增益:1.8dBi 功率 - 最大值:- 特性:- 端接:連接器，U.FL 侵入防護:- 安裝類型:面板安裝 高度（最大值）:3.150"（80.00mm） 應用:- 標準包裝:50 |
| ANT-916-PW-RA | 功能描述:天線 Perm Mnt Swvl Angle 1/4 Wave Whip 916MHz RoHS:否 制造商:Molex 技術類型:Cellular Antenna 頻率: 帶寬: 尺寸:106.7 mm L x 13 mm W |
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